A comparison of Irish set dancing and exercises for people with Parkinson’s disease: A phase II feasibility study
Identifieur interne : 000217 ( Pmc/Corpus ); précédent : 000216; suivant : 000218A comparison of Irish set dancing and exercises for people with Parkinson’s disease: A phase II feasibility study
Auteurs : Daniele Volpe ; Matteo Signorini ; Anna Marchetto ; Timothy Lynch ; Meg E. MorrisSource :
- BMC Geriatrics [ 1471-2318 ] ; 2013.
Abstract
People with idiopathic Parkinson’s disease (PD) frequently have low activity levels, poor mobility and reduced quality of life. Although increased physical activity may improve mobility, balance and wellbeing, adherence to exercises and activity programs over the longer term can be challenging, particularly for older people with progressive neurological conditions such as PD. Physical activities that are engaging and enjoyable, such as dancing, might enhance adherence over the long term. The objective of this study was to evaluate the feasibility of a randomized controlled trial of Irish set dancing compared with routine physiotherapy for people with mild to moderately severe PD.
Twenty-four people with idiopathic PD referred for movement rehabilitation were randomized to receive standard physiotherapy exercises or Irish set dancing classes once per week plus a weekly home program for 6 months (12 in each group). The feasibility and safety of the proposed RCT protocol was the main focus of this evaluation. The primary outcome was motor disability measured by the motor component of the UPDRS, which was assessed prior to and after therapy by trained assessors blinded to group assignment. The Timed Up and Go, the Berg Balance Scale and the modified Freezing of Gait Questionnaire were secondary measures. Quality of life of the people with PD was evaluated using the PDQ-39.
Both the Irish set dancing and physiotherapy exercise program were shown to be feasible and safe. There were no differences between groups in the rate of adverse events such as falls, serious injuries, death or rates of admission to hospital. The physiotherapists who provided usual care remained blind to group allocation, with no change in their standard clinical practice. Compliance and adherence to both the exercise and dance programs were very high and attrition rates were low over the 6 months of therapy. Although improvements were made in both groups, the dance group showed superior results to standard physiotherapy in relation to freezing of gait, balance and motor disability.
Irish dancing and physiotherapy were both safe and feasible in this sample from Venice, with good adherence over a comparatively long time period of 6 months. A larger multi-centre trial is now warranted to establish whether Irish set dancing is more effective than routine physiotherapy for enhancing mobility, balance and quality of life in people living with idiopathic PD.
EudraCT number 2012-005769-11
Url:
DOI: 10.1186/1471-2318-13-54
PubMed: 23731986
PubMed Central: 3685562
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PMC:3685562Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A comparison of Irish set dancing and exercises for people with Parkinson’s disease: A phase II feasibility study</title><author><name sortKey="Volpe, Daniele" sort="Volpe, Daniele" uniqKey="Volpe D" first="Daniele" last="Volpe">Daniele Volpe</name><affiliation><nlm:aff id="I1">Department of Physical Medicine & Rehabilitation, S. Raffaele Arcangelo Fatebenefratelli Hospital, Cannaregio, Venice, 3458, Italy</nlm:aff></affiliation><affiliation><nlm:aff id="I2">Fatebenefratelli Association for Research, Rome, Italy</nlm:aff></affiliation></author><author><name sortKey="Signorini, Matteo" sort="Signorini, Matteo" uniqKey="Signorini M" first="Matteo" last="Signorini">Matteo Signorini</name><affiliation><nlm:aff id="I1">Department of Physical Medicine & Rehabilitation, S. Raffaele Arcangelo Fatebenefratelli Hospital, Cannaregio, Venice, 3458, Italy</nlm:aff></affiliation><affiliation><nlm:aff id="I2">Fatebenefratelli Association for Research, Rome, Italy</nlm:aff></affiliation></author><author><name sortKey="Marchetto, Anna" sort="Marchetto, Anna" uniqKey="Marchetto A" first="Anna" last="Marchetto">Anna Marchetto</name><affiliation><nlm:aff id="I2">Fatebenefratelli Association for Research, Rome, Italy</nlm:aff></affiliation></author><author><name sortKey="Lynch, Timothy" sort="Lynch, Timothy" uniqKey="Lynch T" first="Timothy" last="Lynch">Timothy Lynch</name><affiliation><nlm:aff id="I3">Neurological Institute, Mater Misericordiae University Hospital, Dublin, Ireland</nlm:aff></affiliation></author><author><name sortKey="Morris, Meg E" sort="Morris, Meg E" uniqKey="Morris M" first="Meg E" last="Morris">Meg E. Morris</name><affiliation><nlm:aff id="I4">Department of Physiotherapy, School of Allied Health, La Trobe University, La Trobe, 3086, Australia</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23731986</idno><idno type="pmc">3685562</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3685562</idno><idno type="RBID">PMC:3685562</idno><idno type="doi">10.1186/1471-2318-13-54</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">000217</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000217</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A comparison of Irish set dancing and exercises for people with Parkinson’s disease: A phase II feasibility study</title><author><name sortKey="Volpe, Daniele" sort="Volpe, Daniele" uniqKey="Volpe D" first="Daniele" last="Volpe">Daniele Volpe</name><affiliation><nlm:aff id="I1">Department of Physical Medicine & Rehabilitation, S. Raffaele Arcangelo Fatebenefratelli Hospital, Cannaregio, Venice, 3458, Italy</nlm:aff></affiliation><affiliation><nlm:aff id="I2">Fatebenefratelli Association for Research, Rome, Italy</nlm:aff></affiliation></author><author><name sortKey="Signorini, Matteo" sort="Signorini, Matteo" uniqKey="Signorini M" first="Matteo" last="Signorini">Matteo Signorini</name><affiliation><nlm:aff id="I1">Department of Physical Medicine & Rehabilitation, S. Raffaele Arcangelo Fatebenefratelli Hospital, Cannaregio, Venice, 3458, Italy</nlm:aff></affiliation><affiliation><nlm:aff id="I2">Fatebenefratelli Association for Research, Rome, Italy</nlm:aff></affiliation></author><author><name sortKey="Marchetto, Anna" sort="Marchetto, Anna" uniqKey="Marchetto A" first="Anna" last="Marchetto">Anna Marchetto</name><affiliation><nlm:aff id="I2">Fatebenefratelli Association for Research, Rome, Italy</nlm:aff></affiliation></author><author><name sortKey="Lynch, Timothy" sort="Lynch, Timothy" uniqKey="Lynch T" first="Timothy" last="Lynch">Timothy Lynch</name><affiliation><nlm:aff id="I3">Neurological Institute, Mater Misericordiae University Hospital, Dublin, Ireland</nlm:aff></affiliation></author><author><name sortKey="Morris, Meg E" sort="Morris, Meg E" uniqKey="Morris M" first="Meg E" last="Morris">Meg E. Morris</name><affiliation><nlm:aff id="I4">Department of Physiotherapy, School of Allied Health, La Trobe University, La Trobe, 3086, Australia</nlm:aff></affiliation></author></analytic><series><title level="j">BMC Geriatrics</title><idno type="eISSN">1471-2318</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>People with idiopathic Parkinson’s disease (PD) frequently have low activity levels, poor mobility and reduced quality of life. Although increased physical activity may improve mobility, balance and wellbeing, adherence to exercises and activity programs over the longer term can be challenging, particularly for older people with progressive neurological conditions such as PD. Physical activities that are engaging and enjoyable, such as dancing, might enhance adherence over the long term. The objective of this study was to evaluate the feasibility of a randomized controlled trial of Irish set dancing compared with routine physiotherapy for people with mild to moderately severe PD.</p></sec><sec><title>Methods</title><p>Twenty-four people with idiopathic PD referred for movement rehabilitation were randomized to receive standard physiotherapy exercises or Irish set dancing classes once per week plus a weekly home program for 6 months (12 in each group). The feasibility and safety of the proposed RCT protocol was the main focus of this evaluation. The primary outcome was motor disability measured by the motor component of the UPDRS, which was assessed prior to and after therapy by trained assessors blinded to group assignment. The Timed Up and Go, the Berg Balance Scale and the modified Freezing of Gait Questionnaire were secondary measures. Quality of life of the people with PD was evaluated using the PDQ-39.</p></sec><sec><title>Results</title><p>Both the Irish set dancing and physiotherapy exercise program were shown to be feasible and safe. There were no differences between groups in the rate of adverse events such as falls, serious injuries, death or rates of admission to hospital. The physiotherapists who provided usual care remained blind to group allocation, with no change in their standard clinical practice. Compliance and adherence to both the exercise and dance programs were very high and attrition rates were low over the 6 months of therapy. Although improvements were made in both groups, the dance group showed superior results to standard physiotherapy in relation to freezing of gait, balance and motor disability.</p></sec><sec><title>Conclusions</title><p>Irish dancing and physiotherapy were both safe and feasible in this sample from Venice, with good adherence over a comparatively long time period of 6 months. A larger multi-centre trial is now warranted to establish whether Irish set dancing is more effective than routine physiotherapy for enhancing mobility, balance and quality of life in people living with idiopathic PD.</p></sec><sec><title>Trial registration</title><p>EudraCT number 2012-005769-11</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Li, F" uniqKey="Li F">F Li</name></author><author><name sortKey="Harmer, P" uniqKey="Harmer P">P Harmer</name></author><author><name sortKey="Fitzgerald, K" uniqKey="Fitzgerald K">K Fitzgerald</name></author><author><name sortKey="Eckstrom, E" uniqKey="Eckstrom E">E Eckstrom</name></author><author><name sortKey="Stock, R" uniqKey="Stock R">R Stock</name></author><author><name sortKey="Galver, J" uniqKey="Galver J">J Galver</name></author><author><name sortKey="Maddalozzo, G" uniqKey="Maddalozzo G">G Maddalozzo</name></author><author><name sortKey="Batya, Ss" uniqKey="Batya S">SS 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<front><journal-meta><journal-id journal-id-type="nlm-ta">BMC Geriatr</journal-id><journal-id journal-id-type="iso-abbrev">BMC Geriatr</journal-id><journal-title-group><journal-title>BMC Geriatrics</journal-title></journal-title-group><issn pub-type="epub">1471-2318</issn><publisher><publisher-name>BioMed Central</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">23731986</article-id><article-id pub-id-type="pmc">3685562</article-id><article-id pub-id-type="publisher-id">1471-2318-13-54</article-id><article-id pub-id-type="doi">10.1186/1471-2318-13-54</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>A comparison of Irish set dancing and exercises for people with Parkinson’s disease: A phase II feasibility study</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes" id="A1"><name><surname>Volpe</surname><given-names>Daniele</given-names></name><xref ref-type="aff" rid="I1">1</xref><xref ref-type="aff" rid="I2">2</xref><email>dott.dvolpe@libero.it</email></contrib><contrib contrib-type="author" id="A2"><name><surname>Signorini</surname><given-names>Matteo</given-names></name><xref ref-type="aff" rid="I1">1</xref><xref ref-type="aff" rid="I2">2</xref><email>matteo_signorini@hotmail.it</email></contrib><contrib contrib-type="author" id="A3"><name><surname>Marchetto</surname><given-names>Anna</given-names></name><xref ref-type="aff" rid="I2">2</xref><email>anna.marchetto@hotmail.com</email></contrib><contrib contrib-type="author" id="A4"><name><surname>Lynch</surname><given-names>Timothy</given-names></name><xref ref-type="aff" rid="I3">3</xref><email>tlynch@mater.ie</email></contrib><contrib contrib-type="author" id="A5"><name><surname>Morris</surname><given-names>Meg E</given-names></name><xref ref-type="aff" rid="I4">4</xref><email>m.morris@latrobe.edu.au</email></contrib></contrib-group><aff id="I1"><label>1</label>Department of Physical Medicine & Rehabilitation, S. Raffaele Arcangelo Fatebenefratelli Hospital, Cannaregio, Venice, 3458, Italy</aff><aff id="I2"><label>2</label>Fatebenefratelli Association for Research, Rome, Italy</aff><aff id="I3"><label>3</label>Neurological Institute, Mater Misericordiae University Hospital, Dublin, Ireland</aff><aff id="I4"><label>4</label>Department of Physiotherapy, School of Allied Health, La Trobe University, La Trobe, 3086, Australia</aff><pub-date pub-type="collection"><year>2013</year></pub-date><pub-date pub-type="epub"><day>4</day><month>6</month><year>2013</year></pub-date><volume>13</volume><fpage>54</fpage><lpage>54</lpage><history><date date-type="received"><day>21</day><month>11</month><year>2012</year></date><date date-type="accepted"><day>31</day><month>5</month><year>2013</year></date></history><permissions><copyright-statement>Copyright © 2013 Volpe et al.; licensee BioMed Central Ltd.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder>Volpe et al.; licensee BioMed Central Ltd.</copyright-holder><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/2.0"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/2.0">http://creativecommons.org/licenses/by/2.0</ext-link>), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><self-uri xlink:href="http://www.biomedcentral.com/1471-2318/13/54"></self-uri><abstract><sec><title>Background</title><p>People with idiopathic Parkinson’s disease (PD) frequently have low activity levels, poor mobility and reduced quality of life. Although increased physical activity may improve mobility, balance and wellbeing, adherence to exercises and activity programs over the longer term can be challenging, particularly for older people with progressive neurological conditions such as PD. Physical activities that are engaging and enjoyable, such as dancing, might enhance adherence over the long term. The objective of this study was to evaluate the feasibility of a randomized controlled trial of Irish set dancing compared with routine physiotherapy for people with mild to moderately severe PD.</p></sec><sec><title>Methods</title><p>Twenty-four people with idiopathic PD referred for movement rehabilitation were randomized to receive standard physiotherapy exercises or Irish set dancing classes once per week plus a weekly home program for 6 months (12 in each group). The feasibility and safety of the proposed RCT protocol was the main focus of this evaluation. The primary outcome was motor disability measured by the motor component of the UPDRS, which was assessed prior to and after therapy by trained assessors blinded to group assignment. The Timed Up and Go, the Berg Balance Scale and the modified Freezing of Gait Questionnaire were secondary measures. Quality of life of the people with PD was evaluated using the PDQ-39.</p></sec><sec><title>Results</title><p>Both the Irish set dancing and physiotherapy exercise program were shown to be feasible and safe. There were no differences between groups in the rate of adverse events such as falls, serious injuries, death or rates of admission to hospital. The physiotherapists who provided usual care remained blind to group allocation, with no change in their standard clinical practice. Compliance and adherence to both the exercise and dance programs were very high and attrition rates were low over the 6 months of therapy. Although improvements were made in both groups, the dance group showed superior results to standard physiotherapy in relation to freezing of gait, balance and motor disability.</p></sec><sec><title>Conclusions</title><p>Irish dancing and physiotherapy were both safe and feasible in this sample from Venice, with good adherence over a comparatively long time period of 6 months. A larger multi-centre trial is now warranted to establish whether Irish set dancing is more effective than routine physiotherapy for enhancing mobility, balance and quality of life in people living with idiopathic PD.</p></sec><sec><title>Trial registration</title><p>EudraCT number 2012-005769-11</p></sec></abstract><kwd-group><kwd>Parkinson’s disease</kwd><kwd>Dancing</kwd><kwd>Rehabilitation</kwd><kwd>Exercise therapy</kwd><kwd>Balance</kwd><kwd>Randomized controlled trial</kwd><kwd>Geriatrics</kwd></kwd-group></article-meta></front><body><sec><title>Background</title><p>Idiopathic Parkinson’s disease (PD) is a progressive neurological condition associated with reduced physical activity, poor mobility, falls and reduced health related quality of life. Although there is growing evidence showing that physical activity and exercise programs for people with PD can improve strength [<xref ref-type="bibr" rid="B1">1</xref>], balance [<xref ref-type="bibr" rid="B2">2</xref>,<xref ref-type="bibr" rid="B3">3</xref>], mobility [<xref ref-type="bibr" rid="B4">4</xref>] and life quality [<xref ref-type="bibr" rid="B5">5</xref>,<xref ref-type="bibr" rid="B6">6</xref>], many trials have shown limited long term benefits despite short term gains [<xref ref-type="bibr" rid="B7">7</xref>-<xref ref-type="bibr" rid="B9">9</xref>]. In addition, adherence to exercises and physical activity programs over the longer term can be problematic in people with PD, particularly for those who are elderly, have advanced disease or for those who have several co-morbidities [<xref ref-type="bibr" rid="B7">7</xref>]. Reduced physical activity and poor mobility can be associated with an increased risk of falls, immobility, hospitalization and the need for long term care [<xref ref-type="bibr" rid="B6">6</xref>,<xref ref-type="bibr" rid="B10">10</xref>-<xref ref-type="bibr" rid="B13">13</xref>]. To optimize health related quality of life there is a need to find effective, enjoyable and sustainable methods of exercising in people with this debilitating and progressive disease [<xref ref-type="bibr" rid="B14">14</xref>,<xref ref-type="bibr" rid="B15">15</xref>].</p><p>Dancing is a popular mode of physical activity for many older people. Preliminary trials in PD by Duncan and Earhart [<xref ref-type="bibr" rid="B16">16</xref>], Foster [<xref ref-type="bibr" rid="B17">17</xref>], Marchant et al. [<xref ref-type="bibr" rid="B18">18</xref>] and Hackney and colleagues [<xref ref-type="bibr" rid="B19">19</xref>] have shown that dancing can be associated with improvements in mobility, balance and quality of life. It is not clear whether dancing is more effective, sustainable and enjoyable over the long term compared to conventional therapeutic exercises. It is also not known which dancing genre is most effective (such as Irish set dancing, tango, square dancing, ballroom dancing, creative dancing, or improvisation). Whether dancing should be partnered or un-partnered, what music is most suitable and the most effective dosage of dancing to achieve therapeutic benefits remain to be established. Importantly, it is not known if dancing is safe for frail people with PD who have a propensity to fall.</p><p>As a prelude to a large scale multi-centre randomized controlled trial (RCT), there is a need to explore the effects of Irish set dancing for people living with PD. Irish set dancing is popular for people with PD throughout the world. It provides rhythmical auditory cues, affords the stability provided by partners, is relatively simple and easy to learn and perform and is reported to be enjoyable [<xref ref-type="bibr" rid="B16">16</xref>].</p><p>Whilst there is some evidence showing tango dancing to be beneficial for some individuals with PD [<xref ref-type="bibr" rid="B19">19</xref>], this form of dance is comparatively complex and challenging and possibly is most effective for people with mild to moderately severe PD. There is a need to test the feasibility, safety and adherence to a long term program of Irish set dancing compared with standard physiotherapy exercises.</p><p>Safety is particularly important in people with PD, given the prevalence of balance impairment and falls. Hiorth et al. [<xref ref-type="bibr" rid="B20">20</xref>] showed that up to 60% of people with PD fall over a 12 month period. Our feasibility trial will enable us to evaluate which measurement tools best quantify physical activity, balance and mobility over a 6 month period. Furthermore it will allow us to examine whether increasing physical activity levels using Irish set dancing delivered in a rehabilitation setting is associated with contamination in the standard exercise group, leading to changes in usual care activities.</p><p>Thus in this feasibility study we address the following research questions:</p><p>1. Is the proposed RCT protocol comparing Irish set dancing with routine physiotherapy exercises feasible and safe?</p><p>2. Which measures of mobility, balance and quality of life are feasible for people with mild to moderate PD undergoing a 6 month period of movement rehabilitation incorporating dance?</p><p>3. What are the estimates of the treatment effects and the estimates of the variance of the treatment effects, as the basis for estimating the sample size needed in a future large scale RCT to ascertain if Irish set dancing is more effective than routine exercises for people with mild to moderately severe PD?</p></sec><sec sec-type="methods"><title>Methods</title><sec><title>Design</title><p>We conducted a single blind, parallel group RCT with a focus on feasibility as a primary outcome. People with idiopathic PD were recruited from the Parkinson’s disease Association in Venice, Italy. The trial was approved by the hospital ethics committee (C.E.O.C. Brescia Italy, ref 326/2012). The trial was registered with the EudraCT (2012-005769-11). Written informed consent was obtained from the participants who scored more than 24/30 on the Mini Mental State Examination. If appropriate, written informed consent was obtained from the spouses of participants who scored less than 25/30. Participants were randomized to receive a program of either Irish set dancing or standard physiotherapy exercises for 1.5 hours once per week for 6 months.</p></sec><sec><title>Participants</title><p>Participants were eligible for inclusion if they had idiopathic Parkinson’s disease as diagnosed by a medical practitioner and were rated level 0–2.5 on the modified Hoehn & Yahr scale [<xref ref-type="bibr" rid="B21">21</xref>]. We included only those with mild to moderately severe PD for safety reasons as people at stage 3 or more on the Hoehn and Yahr scale have a high risk of falls. Participants were excluded if they did not speak Italian, if they had co-morbidities that prevented dancing, mobility or safe exercise, if they had received deep brain stimulation surgery or if they were unable to travel to the dancing or physiotherapy venues.</p></sec><sec><title>Randomization</title><p>After initial screening procedures and baseline testing, we used a blocked stratified randomization procedure, based on the modified Hoehn & Yahr (1967) score, to allocate participants to one of the two groups. We stratified according to modified Hoehn & Yahr (1967) scale scores to ensure that groups had similar proportions of those who were mild (H&Y 0–1.5) and moderately affected (2–2.5). We used computer generated number sequences for randomization and this procedure was conducted by a third party. Opaque envelopes were used to conceal allocation. Trained assessors who were blinded to group allocation conducted all of the assessments. Physiotherapists and dancing teachers providing the intervention could not be blinded to group allocation. To reduce the risk of contamination by the usual care staff becoming aware of group assignment, we therefore ensured that employers not directly involved in the study were not told of the aims, hypotheses or predictions of the trial. The therapists and dancing teachers who provided the interventions were not involved in other aspects of patient care. To test whether staff remained blind to group allocation, we asked them to guess group allocation at the end of the trial. Seven of the 24 subjects guessed their group assignment correctly.</p></sec><sec><title>Intervention</title><p>Participants in the Irish set dancing group received a 90 minute set dancing class weekly for six months in a dance studio located in Venice. The dance classes were held by two set dancing teachers of the Blacksheep Irish Set Dancing School in Venice, Italy. People with PD were partnered with members of the Irish set dancing school to ensure their safety, as advised by Earhart [<xref ref-type="bibr" rid="B22">22</xref>]. Family members were also invited to assist or partner the people with PD. The Irish set dancing class included a preliminary warm up consisting of range of movement, balance and postural exercises [<xref ref-type="bibr" rid="B23">23</xref>]. The goal of the warm up was to prepare people with PD for the set dancing class focusing on steps, turning, balance and posture. The class used different set dancing steps and in particular reel and polka steps. The teachers taught sets, in group formation, in four pairs of two. They were taught sets from different counties of Ireland and in particular the Corofin plain reel set, the Antrim reel set, the Black Valley Jig square, and the Durrow Threshing polka set. The sets were chosen to improve motor symptoms in Parkinson’s disease such as balance impairment, freezing of gait and hypokinesia using Irish music as a rhythmical cue [<xref ref-type="bibr" rid="B14">14</xref>]. Each class ended with a group dance in a circle and then with relaxation exercises. The protocol incorporated 10 minutes of warm up range of movement, balance and postural exercises, 70 minutes of Irish dance lessons and a 10 minutes cool down. Each person with PD was also given a video with recordings of the steps danced by the teacher. They were requested to watch the video at home once during each week, for a period of 1 hour.</p><p>The weekly standard physiotherapy exercise sessions included individual sessions delivered by a physiotherapist or physiotherapy assistant designed to improve muscle strength, mobility, balance, and postural control. The physiotherapy program was in according to the KNGF Guidelines for physical therapy in Parkinson's disease as described below. For each session each person had warm up range of movement and stretching exercises for 10 minutes followed by 50 minutes of strength training, balance training and postural re- education, then 20 minutes of gait training and a 10 minute cool down.</p><table-wrap position="float" id="T1"><label>Table 1</label><caption><p>Demographic and clinical data</p></caption><table frame="hsides" rules="groups" border="1"><colgroup><col align="left"></col><col align="left"></col><col align="left"></col></colgroup><thead valign="top"><tr><th align="left"><bold>Variable</bold></th><th align="left"><bold>PD Irish dance (n = 12)</bold></th><th align="left"><bold>PD Physiotherapy (n = 12)</bold></th></tr></thead><tbody valign="top"><tr><td colspan="3" align="left" valign="bottom">mean ± standard deviation (range)<hr></hr></td></tr><tr><td align="left" valign="bottom">Gender (M/F)<hr></hr></td><td align="left" valign="bottom">7/5<hr></hr></td><td align="left" valign="bottom">6/6<hr></hr></td></tr><tr><td align="left" valign="bottom">Age (yr)<hr></hr></td><td align="left" valign="bottom">61.6 ± 4.5 (58 – 73)<hr></hr></td><td align="left" valign="bottom">65.0 ± 5.3 (56 – 71)<hr></hr></td></tr><tr><td align="left" valign="bottom">Height (cm)<hr></hr></td><td align="left" valign="bottom">167.6 ± 6.4 (157 – 180)<hr></hr></td><td align="left" valign="bottom">168.6 ± 6.6 (159 – 183)<hr></hr></td></tr><tr><td align="left" valign="bottom">Weight (Kg)<hr></hr></td><td align="left" valign="bottom">71.3 ± 6.0 (65 – 87)<hr></hr></td><td align="left" valign="bottom">70.3 ± 6.8 (60 – 84)<hr></hr></td></tr><tr><td align="left" valign="bottom">Disease duration (yr)<hr></hr></td><td align="left" valign="bottom">9.0 ± 3.6 (5 – 18)<hr></hr></td><td align="left" valign="bottom">8.9 ± 2.5 (5 – 13)<hr></hr></td></tr><tr><td align="left" valign="bottom">Hoehn-Yahr score<hr></hr></td><td align="left" valign="bottom">2.2 ± 0.4 (2 – 3)<hr></hr></td><td align="left" valign="bottom">2.2 ± 0.4 (2–3)<hr></hr></td></tr><tr><td align="left" valign="bottom">MMSE score<hr></hr></td><td align="left" valign="bottom">26.5 ± 1.4 (24 – 29)<hr></hr></td><td align="left" valign="bottom">26.3 ± 1.8 (24 – 29)<hr></hr></td></tr><tr><td align="left" valign="bottom">Levodopa (mg/day)(n = 24)<hr></hr></td><td align="left" valign="bottom">725.0 ± 234 (400 – 1000)<hr></hr></td><td align="left" valign="bottom">645.0 ± 216 (400–1000)<hr></hr></td></tr><tr><td align="left" valign="bottom"><italic>Dopamine agonist (mg/day)</italic><hr></hr></td><td align="left" valign="bottom"> <hr></hr></td><td align="left" valign="bottom"> <hr></hr></td></tr><tr><td align="left" valign="bottom">Pramipexole E.R.<hr></hr></td><td align="left" valign="bottom">(n = 5) 1.9 ± 0.5 (1.05 – 2.1)<hr></hr></td><td align="left" valign="bottom">(n = 4) 2.4 ± 0.5 (2.1–3.15)<hr></hr></td></tr><tr><td align="left" valign="bottom">Ropinirole E.R.<hr></hr></td><td align="left" valign="bottom">(n = 4) 12.5 ± 1.9 (10 – 14)<hr></hr></td><td align="left" valign="bottom">(n = 5)12.0 ± 2 (10–14)<hr></hr></td></tr><tr><td align="left" valign="bottom">Rotigotine<hr></hr></td><td align="left" valign="bottom">(n = 3) 12.0 ± 2 (10–14)<hr></hr></td><td align="left" valign="bottom">(n = 4)13.5 ± 2.5 (10–16)<hr></hr></td></tr><tr><td align="left" valign="bottom">Rasagiline<hr></hr></td><td align="left" valign="bottom">(n = 1) 1<hr></hr></td><td align="left" valign="bottom">(n = 3) 1<hr></hr></td></tr><tr><td align="left" valign="bottom"><italic>Other drugs (mg/day)</italic><hr></hr></td><td align="left" valign="bottom"> <hr></hr></td><td align="left" valign="bottom"> <hr></hr></td></tr><tr><td align="left">Entacapone</td><td align="left">(n = 3) 1000±200 (800 – 1200)</td><td align="left">(n = 2) 1000</td></tr></tbody></table></table-wrap><p>Each person with PD was given a video with recordings of the physiotherapy exercises. They were requested to watch the video at home once during each week, for a period of 1 hour. Over the six month intervention period, participants had on average 21.08 individual sessions of physiotherapy and 21.83 dance classes.</p></sec><sec><title>Details of program content</title><sec><title>Standard physiotherapy program according to the KNGF guidelines for physical therapy in Parkinson’s disease</title><p>•Cognitive movement strategies:<italic>to divide complex automatic activities into simple movements avoiding dual tasking and to practice the movements and rehearsed in the mind.</italic></p><p>•Cueing strategies: <italic>to improve movement and gait impairments with cueing (auditory, visual and proprioceptive cueing)</italic></p><p>•Improvement of transfers: <italic>to train transfers by applying cognitive movement strategies and cues to initiate and continue movement</italic></p><p>•Normalizing body posture: <italic>to preventing or treating postural deformities with exercises for postural realignment and coordinated movements</italic></p><p>•Training reaching and grasping: <italic>to improve reaching and grasping, and manipulation of objects using cueing strategies and cognitive movement strategies avoiding dual tasking.</italic></p><p>•Training balance: <italic>to optimize balance during the performance of activities with exercises for balance and training strength. Falls prevention strategies</italic></p><p>•Gait training: <italic>to walk safely and to increase (comfortable) walking speed with the use of cues and cognitive movement strategies and to train muscle</italic><italic>strength and mobility of the trunk and upper and lower limbs.</italic></p><p>•Improvement of physical capacity: <italic>to maintain or to improve physical capacity with training of aerobic muscle strength (with the emphasis on the muscles of the trunk and legs), joint mobility (among others, axial) and muscle length (among others, muscles of the calf and hamstrings)</italic></p></sec></sec><sec><title>Outcome measures</title><p>We assessed outcomes at two time points. Baseline measures were taken within 3 weeks prior to therapy. The second assessment occurred within 3 weeks of the final week of the six month therapy period. The final assessment was 3 weeks after discharge. These time points were chosen because we wanted to evaluate the attainment and retention of skills learned during the Irish dancing course or physiotherapy classes [<xref ref-type="bibr" rid="B24">24</xref>]).</p><p>So we could compare our findings with other trials on rehabilitation outcomes in PD, we measured motor disability using the motor component of the UPDRS [<xref ref-type="bibr" rid="B25">25</xref>]. We also tested participants using the Timed Up and Go, the Berg Balance Scale and the modified Freezing of Gait Questionnaire as secondary measures of outcome. We also quantified health related quality of life in all participants using the PDQ-39. Demographic data collected at baseline included age, sex, duration PD, PD medications, cognition assessed using the Mini Mental State Examination. Although these tools have been tested for reliability and validity in other clinical trials, we wanted to examine their clinic-metric properties in relationship to a dance program over a 6 month period.</p><sec><title>Adverse events</title><p>We recorded all adverse events such as injuries, distress, falls, deaths, and hospital admissions as a results of injures from the programs.</p></sec></sec><sec><title>Statistical analysis</title><p>This clinical trial used a sample of convenience, with the assumption that 24 participants would be ample to explore safety and feasibility. For each group we compared for each variable changes in performance from admission to discharge. We also evaluated group by time interactions using repeated measures analysis of variance. We also report the effect size estimates for the treatment effects and the variance in the treatment effects. The amount of time spent in each type of therapy was recorded by a physiotherapist or therapy assistant. In addition, at the beginning of each session, participants were required to sign a form in order to attest their attendance. Data on hospital admission rates, injuries and adverse events were verified by phone interview. There were no deaths during the trial.</p></sec></sec><sec sec-type="results"><title>Results</title><sec><title>Participants</title><p>Table <xref ref-type="table" rid="T1">1</xref> shows the baseline characteristics for both groups to be comparable. There were no statistically significant differences between groups, including for key variables such as height, weight, PD duration, H-Y or MMSE scores.</p><sec><title>Intervention dosages</title><p>For the sample as a whole, 89.4% of intervention sessions were delivered. Only 10.6% of sessions were not delivered due to personal reasons or due to illnesses not related to Parkinson’s disease. More specifically, 90.9% of Irish dance classes and 87.8% physiotherapy sessions were provided.</p></sec><sec><title>Blinding & contamination</title><p>The trained assessors, blinded to group assignment, were unable to identify to which group participants were assigned (29% of the group assignments were guessed correctly). There was no significant difference in the time spent in therapy between the standard physiotherapy group (mean 1898 minutes) and Irish set dancing group (mean 1965 minutes).</p></sec><sec><title>Therapy outcomes</title><p>Table <xref ref-type="table" rid="T2">2</xref> provides the means and standard deviations at admission and at discharge for each of the key variables. The table shows that the Irish dancing group made greater gains than the standard physiotherapy group. Analysis of variance for the UPDRS III motor section scores showed better results for the Irish dancing group (F (1, 23) = 6.35, p =.019). Paired t-tests showed improvements from admission to discharge in both the physiotherapy group (t (11) = 5.841, p<.001) and the Irish dance group: (t (11) =12.46, p<.001).</p><table-wrap position="float" id="T2"><label>Table 2</label><caption><p>Means and (standard deviations) for key variables for each group before and after intervention</p></caption><table frame="hsides" rules="groups" border="1"><colgroup><col align="left"></col><col align="left"></col><col align="left"></col></colgroup><thead valign="top"><tr><th align="left"> </th><th align="left"><bold>Irish dancing</bold></th><th align="left"><bold>Physiotherapy</bold></th></tr></thead><tbody valign="top"><tr><td align="left" valign="bottom">Motor UPDRS Baseline<hr></hr></td><td align="left" valign="bottom">24.58 (3.87)<hr></hr></td><td align="left" valign="bottom">23.92 (3.50)<hr></hr></td></tr><tr><td align="left" valign="bottom">Motor UPDRS Discharge<hr></hr></td><td align="left" valign="bottom">17.42 (3.85)<hr></hr></td><td align="left" valign="bottom">21.00 (3.07)<hr></hr></td></tr><tr><td align="left" valign="bottom">Berg Balance Scale Baseline<hr></hr></td><td align="left" valign="bottom">36.08 (9.20)<hr></hr></td><td align="left" valign="bottom">34.08 (9.14)<hr></hr></td></tr><tr><td align="left" valign="bottom">Berg Balance Scale Discharge<hr></hr></td><td align="left" valign="bottom">46.08 (6.75)<hr></hr></td><td align="left" valign="bottom">38.92 (9.97)<hr></hr></td></tr><tr><td align="left" valign="bottom">FOG Baseline<hr></hr></td><td align="left" valign="bottom">11.42 (2.78)<hr></hr></td><td align="left" valign="bottom">10.75 (3.39)<hr></hr></td></tr><tr><td align="left" valign="bottom">FOG Discharge<hr></hr></td><td align="left" valign="bottom">4.92 (2.07)<hr></hr></td><td align="left" valign="bottom">10.16 (4.47)<hr></hr></td></tr><tr><td align="left" valign="bottom">PDQ39 Baseline<hr></hr></td><td align="left" valign="bottom">30.60 (12.06)<hr></hr></td><td align="left" valign="bottom">32.58 (7.59)<hr></hr></td></tr><tr><td align="left">PDQ39 Discharge</td><td align="left">22.16 (10.18)</td><td align="left">27.61 (7.67)</td></tr></tbody></table></table-wrap><p>Analysis of variance for the TUG test showed superior results over time for the Irish dancing group (F (1, 23) = 8.938, p =.007). Paired t-tests showed improvements from admission to discharge in both the physiotherapy group (t (11) = 5.841, p <.001) and the Irish dance group: (t (11) = 9.666, p<.001).</p><p>For the Berg Balance Scale a trend towards similar results was seen. The Irish set dance group made gains (F (1 ,23) = 4.254; p =.051) although this was not significantly different from standard therapy.</p><p>For the FOG questionnaire the Irish set dancing group made significant gains t (df = 11) =16.296, p =.000). Analysis of variance also showed the group by phase interaction to be statistically significant (F (1, 23) =13.648, p = .001).</p><p>For the PDQ-39 the Irish set dance group and the physiotherapy group showed similar outcomes (F (1, 23) = 2.192, p =.153).</p></sec><sec><title>Adverse events</title><p>Over the six months treatment period 19 participants experienced a non-injurious fall (10 control group, 9 Irish dance group). Only one fall occurred during the Irish set dancing, and no falls occurred during physiotherapy exercise classes. The fall was not injurious and no medical attention was sought. None of the participants were admitted to hospital during their rehabilitation.</p></sec><sec><title>Sample size estimations for future trials</title><p>We used the discharge standard deviations and estimates of clinically significant minimal effects sizes to calculate sample sizes for a future large trial. We aimed to detect an effect size of 0.8, allowing for 20% dropouts, based on the assumption of two groups of equal size and a two tailed significance threshold alpha of 0.05. For the UPDRS motor, is estimated that 18 people are required per group. For the Berg balance scale, it is estimated that 67 people are required per group. For the FOG test it is estimated that 9 people are required per group. Finally, for the PDQ 39 total score, it is estimated that 52 people are required per group. Thus we recommend 70 per group for a future trial, allowing for small levels of non-compliance.</p></sec></sec></sec><sec sec-type="discussion"><title>Discussion</title><p>We have shown the feasibility of a RCT of Irish set dancing compared to standard physiotherapy for people with idiopathic Parkinson’s disease. Both of the programs were delivered successfully over a 6 month time period with very good attendance and good adherence. People with Parkinson’s disease appeared to have the potential to benefit from dancing classes that incorporate elements such as rhythmical music, large amplitude fast movements, dancing with partners and step routines. What is not known is whether other dance genres, such as ballroom dancing, Tango, modern dance, square dancing, jazz ballet or classical ballet are more effective at improving movement, balance and quality of life in people with PD. Moreover the therapeutic effects of the different elements of Irish dancing, such as reel, polka and jig steps have not been quantified. The study did not compare dancing genres or the content and duration of dancing. The extent to which different types of music contribute to outcomes also remains open to question.</p><p>In terms of outcome measures, we were able to quantify motor disability using the motor component of the UPDRS, the Timed Up and Go, the Berg Balance Scale and the modified Freezing of Gait Questionnaire. Of these the UPDRS was best able to discriminate change and was quick and easy to administer. We also found it feasible to measure life quality using the PDQ-39.</p><p>There were a small number of limitations of this pilot study. Firstly, PD medications were not controlled, simply documented and testing did not always occur at peak dose in the medication cycle despite being always in the same hour. In addition the content of the standard physiotherapy treatment program reflected clinical practice in Italy and may not necessarily reflect contemporary clinical practice in other parts of the world even if the physiotherapy program was in according to the KNGF Guidelines for physical therapy in Parkinson's disease. The clinical relevance also needs to be considered given the modest effect sizes reported in this trial. Although modest changes were seen, this is argued to be clinically significant given that Parkinson’s disease is a progressive and debilitating disease for which any benefits to mobility and quality of life can be considered to be helpful.</p></sec><sec sec-type="conclusions"><title>Conclusion</title><p>To conclude, Irish set dancing appears to be safe, simple, and enjoyable with the potential to improve mobility, reduce disability and enhance health related quality of life. This preliminary investigation provides data showing our protocol for a large scale RCT to be both safe and feasible. The large trial is now needed to ascertain the effectiveness of Irish set dancing compared with routine physiotherapy exercises over the long term.</p></sec><sec><title>Competing interests</title><p>The authors declare they have no competing interests.</p></sec><sec><title>Authors’ contributions</title><p>DV conceived the study, participated in the design, oversaw data collection, contributed to data interpretation and drafted the manuscript, was responsible for statistical analysis and analyzing the results and contributed to manuscript preparation. MS and AM contributed to statistical analysis and interpretation of data. TL made substantial contribution to conception and design of the study. MEM contributed to data checking and writing the manuscript. All authors read and approved the final manuscript.</p></sec><sec><title>Pre-publication history</title><p>The pre-publication history for this paper can be accessed here:</p><p><ext-link ext-link-type="uri" xlink:href="http://www.biomedcentral.com/1471-2318/13/54/prepub">http://www.biomedcentral.com/1471-2318/13/54/prepub</ext-link></p></sec></body><back><sec><title>Acknowledgements</title><p>The assistance of participants and staff of the Black Sheep Irish Set Dancing School in particular Romano and Stefania Baratella, who are gratefully acknowledged. We also thank the Parkinson’s patients who so graciously participated in this trial. 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