Walking Energetics, Fatigability, and Fatigue in Older Adults: The Study of Energy and Aging Pilot
Identifieur interne : 000052 ( Pmc/Checkpoint ); précédent : 000051; suivant : 000053Walking Energetics, Fatigability, and Fatigue in Older Adults: The Study of Energy and Aging Pilot
Auteurs : Catherine A. Richardson [Canada] ; Nancy W. Glynn ; Luigi G. Ferrucci ; Dawn C. Mackey [Canada]Source :
- The Journals of Gerontology Series A: Biological Sciences and Medical Sciences [ 1079-5006 ] ; 2014.
Abstract
Slow gait speed increases morbidity and mortality in older adults. We examined how preferred gait speed is associated with energetic requirements of walking, fatigability, and fatigue.
Older adults (
Preferred gait speed over 400 m (range: 0.75–1.58 m/s) averaged 1.34 m/s for fast walkers versus 1.05 m/s for slow walkers (
Slow walking was associated with reduced aerobic capacity, greater energetic cost of walking, and greater fatigability. Interventions to improve aerobic capacity or decrease energetic cost of walking may prevent slowing of gait speed and promote mobility in older adults.
Url:
DOI: 10.1093/gerona/glu146
PubMed: 25190069
PubMed Central: 4447797
Affiliations:
Links toward previous steps (curation, corpus...)
Links to Exploration step
PMC:4447797Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Walking Energetics, Fatigability, and Fatigue in Older Adults: The Study of Energy and Aging Pilot</title><author><name sortKey="Richardson, Catherine A" sort="Richardson, Catherine A" uniqKey="Richardson C" first="Catherine A." last="Richardson">Catherine A. Richardson</name><affiliation wicri:level="1"><nlm:aff id="AF0001"><institution>Department of Biomedical Physiology and Kinesiology, Simon Fraser University</institution>,<addr-line>Burnaby, British Columbia</addr-line>,<country>Canada</country>.</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Glynn, Nancy W" sort="Glynn, Nancy W" uniqKey="Glynn N" first="Nancy W." last="Glynn">Nancy W. Glynn</name><affiliation><nlm:aff id="AF0002"><institution>Center for Aging and Population Health, Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh</institution>,<addr-line>Pennsylvania</addr-line>.</nlm:aff></affiliation></author><author><name sortKey="Ferrucci, Luigi G" sort="Ferrucci, Luigi G" uniqKey="Ferrucci L" first="Luigi G." last="Ferrucci">Luigi G. Ferrucci</name><affiliation><nlm:aff id="AF0003"><institution>San Francisco Coordinating Center, California Pacific Medical Center Research Institute</institution>.</nlm:aff></affiliation></author><author><name sortKey="Mackey, Dawn C" sort="Mackey, Dawn C" uniqKey="Mackey D" first="Dawn C." last="Mackey">Dawn C. Mackey</name><affiliation wicri:level="1"><nlm:aff id="AF0001"><institution>Department of Biomedical Physiology and Kinesiology, Simon Fraser University</institution>,<addr-line>Burnaby, British Columbia</addr-line>,<country>Canada</country>.</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation><nlm:aff id="AF0004"><institution>California Pacific Medical Center</institution>,<addr-line>San Francisco</addr-line>.</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25190069</idno><idno type="pmc">4447797</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4447797</idno><idno type="RBID">PMC:4447797</idno><idno type="doi">10.1093/gerona/glu146</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000099</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000099</idno><idno type="wicri:Area/Pmc/Curation">000099</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">000099</idno><idno type="wicri:Area/Pmc/Checkpoint">000052</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000052</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Walking Energetics, Fatigability, and Fatigue in Older Adults: The Study of Energy and Aging Pilot</title><author><name sortKey="Richardson, Catherine A" sort="Richardson, Catherine A" uniqKey="Richardson C" first="Catherine A." last="Richardson">Catherine A. Richardson</name><affiliation wicri:level="1"><nlm:aff id="AF0001"><institution>Department of Biomedical Physiology and Kinesiology, Simon Fraser University</institution>,<addr-line>Burnaby, British Columbia</addr-line>,<country>Canada</country>.</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Glynn, Nancy W" sort="Glynn, Nancy W" uniqKey="Glynn N" first="Nancy W." last="Glynn">Nancy W. Glynn</name><affiliation><nlm:aff id="AF0002"><institution>Center for Aging and Population Health, Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh</institution>,<addr-line>Pennsylvania</addr-line>.</nlm:aff></affiliation></author><author><name sortKey="Ferrucci, Luigi G" sort="Ferrucci, Luigi G" uniqKey="Ferrucci L" first="Luigi G." last="Ferrucci">Luigi G. Ferrucci</name><affiliation><nlm:aff id="AF0003"><institution>San Francisco Coordinating Center, California Pacific Medical Center Research Institute</institution>.</nlm:aff></affiliation></author><author><name sortKey="Mackey, Dawn C" sort="Mackey, Dawn C" uniqKey="Mackey D" first="Dawn C." last="Mackey">Dawn C. Mackey</name><affiliation wicri:level="1"><nlm:aff id="AF0001"><institution>Department of Biomedical Physiology and Kinesiology, Simon Fraser University</institution>,<addr-line>Burnaby, British Columbia</addr-line>,<country>Canada</country>.</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation><nlm:aff id="AF0004"><institution>California Pacific Medical Center</institution>,<addr-line>San Francisco</addr-line>.</nlm:aff></affiliation></author></analytic><series><title level="j">The Journals of Gerontology Series A: Biological Sciences and Medical Sciences</title><idno type="ISSN">1079-5006</idno><idno type="eISSN">1758-535X</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background.</title><p>Slow gait speed increases morbidity and mortality in older adults. We examined how preferred gait speed is associated with energetic requirements of walking, fatigability, and fatigue.</p></sec><sec><title>Methods.</title><p>Older adults (<italic>n</italic> = 36, 70–89 years) were categorized as slow or fast walkers based on median 400-m gait speed. We measured VO<sub>2</sub>peak by graded treadmill exercise test and VO<sub>2</sub> during 5-minute treadmill walking tests at standard (0.72 m/s) and preferred gait speeds. Fatigability was assessed with the Situational Fatigue Scale and the Borg rating of perceived exertion at the end of walking tests. Fatigue was assessed by questionnaire.</p></sec><sec><title>Results.</title><p>Preferred gait speed over 400 m (range: 0.75–1.58 m/s) averaged 1.34 m/s for fast walkers versus 1.05 m/s for slow walkers (<italic>p</italic> < .001). VO<sub>2</sub>peak was 26% lower (18.5 vs 25.1ml/kg/min, <italic>p</italic> = .001) in slow walkers than fast walkers. To walk at 0.72 m/s, slow walkers used a larger percentage of VO<sub>2</sub>peak (59% vs 42%, <italic>p</italic> < .001). To walk at preferred gait speed, slow walkers used more energy per unit distance (0.211 vs 0.186ml/kg/m, <italic>p</italic> = .047). Slow walkers reported higher rating of perceived exertion during walking and greater overall fatigability on the Situational Fatigue Scale, but no differences in fatigue.</p></sec><sec><title>Conclusions.</title><p>Slow walking was associated with reduced aerobic capacity, greater energetic cost of walking, and greater fatigability. Interventions to improve aerobic capacity or decrease energetic cost of walking may prevent slowing of gait speed and promote mobility in older adults.</p></sec></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Gerontol A Biol Sci Med Sci</journal-id><journal-id journal-id-type="iso-abbrev">J. Gerontol. A Biol. Sci. Med. Sci</journal-id><journal-id journal-id-type="hwp">gerona</journal-id><journal-id journal-id-type="publisher-id">gerona</journal-id><journal-title-group><journal-title>The Journals of Gerontology Series A: Biological Sciences and Medical Sciences</journal-title></journal-title-group><issn pub-type="ppub">1079-5006</issn><issn pub-type="epub">1758-535X</issn><publisher><publisher-name>Oxford University Press</publisher-name><publisher-loc>US</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">25190069</article-id><article-id pub-id-type="pmc">4447797</article-id><article-id pub-id-type="doi">10.1093/gerona/glu146</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Walking Energetics, Fatigability, and Fatigue in Older Adults: The Study of Energy and Aging Pilot</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Richardson</surname><given-names>Catherine A.</given-names></name><xref ref-type="aff" rid="AF0001"><sup>1</sup></xref></contrib><contrib contrib-type="author"><name><surname>Glynn</surname><given-names>Nancy W.</given-names></name><xref ref-type="aff" rid="AF0002"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Ferrucci</surname><given-names>Luigi G.</given-names></name><xref ref-type="aff" rid="AF0003"><sup>3</sup></xref></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Mackey</surname><given-names>Dawn C.</given-names></name><xref ref-type="aff" rid="AF0001"><sup>1</sup></xref><xref ref-type="aff" rid="AF0004"><sup>4</sup></xref></contrib><aff id="AF0001"><sup>1</sup><institution>Department of Biomedical Physiology and Kinesiology, Simon Fraser University</institution>,<addr-line>Burnaby, British Columbia</addr-line>,<country>Canada</country>.</aff><aff id="AF0002"><sup>2</sup><institution>Center for Aging and Population Health, Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh</institution>,<addr-line>Pennsylvania</addr-line>.</aff><aff id="AF0003"><sup>3</sup><institution>San Francisco Coordinating Center, California Pacific Medical Center Research Institute</institution>.</aff><aff id="AF0004"><sup>4</sup><institution>California Pacific Medical Center</institution>,<addr-line>San Francisco</addr-line>.</aff></contrib-group><author-notes><corresp id="c1">Address correspondence to Dawn C. Mackey, PhD, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada. Email: <email>dmackey@sfu.ca</email></corresp><fn fn-type="other" id="fn1"><p><italic>Decision Editor: Stephen Kritchevsky, PhD</italic></p></fn></author-notes><pub-date pub-type="ppub"><month>4</month><year>2015</year></pub-date><pub-date pub-type="epub"><day>4</day><month>9</month><year>2014</year></pub-date><pub-date pub-type="pmc-release"><day>1</day><month>4</month><year>2016</year></pub-date><pmc-comment> PMC Release delay is 12 months and
0 days and was based on the
<volume>70</volume><issue>4</issue><fpage>487</fpage><lpage>494</lpage><history><date date-type="received"><day>20</day><month>2</month><year>2014</year></date><date date-type="accepted"><day>18</day><month>7</month><year>2014</year></date></history><permissions><copyright-statement>© The Author 2014. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.</copyright-statement><copyright-year>2014</copyright-year></permissions><abstract><sec><title>Background.</title><p>Slow gait speed increases morbidity and mortality in older adults. We examined how preferred gait speed is associated with energetic requirements of walking, fatigability, and fatigue.</p></sec><sec><title>Methods.</title><p>Older adults (<italic>n</italic> = 36, 70–89 years) were categorized as slow or fast walkers based on median 400-m gait speed. We measured VO<sub>2</sub>peak by graded treadmill exercise test and VO<sub>2</sub> during 5-minute treadmill walking tests at standard (0.72 m/s) and preferred gait speeds. Fatigability was assessed with the Situational Fatigue Scale and the Borg rating of perceived exertion at the end of walking tests. Fatigue was assessed by questionnaire.</p></sec><sec><title>Results.</title><p>Preferred gait speed over 400 m (range: 0.75–1.58 m/s) averaged 1.34 m/s for fast walkers versus 1.05 m/s for slow walkers (<italic>p</italic> < .001). VO<sub>2</sub>peak was 26% lower (18.5 vs 25.1ml/kg/min, <italic>p</italic> = .001) in slow walkers than fast walkers. To walk at 0.72 m/s, slow walkers used a larger percentage of VO<sub>2</sub>peak (59% vs 42%, <italic>p</italic> < .001). To walk at preferred gait speed, slow walkers used more energy per unit distance (0.211 vs 0.186ml/kg/m, <italic>p</italic> = .047). Slow walkers reported higher rating of perceived exertion during walking and greater overall fatigability on the Situational Fatigue Scale, but no differences in fatigue.</p></sec><sec><title>Conclusions.</title><p>Slow walking was associated with reduced aerobic capacity, greater energetic cost of walking, and greater fatigability. Interventions to improve aerobic capacity or decrease energetic cost of walking may prevent slowing of gait speed and promote mobility in older adults.</p></sec></abstract><kwd-group><title>Key Words:</title><kwd>Gait speed</kwd><kwd>Mobility</kwd><kwd>Fatigue</kwd><kwd>Epidemiology</kwd><kwd>Energetics.</kwd></kwd-group><counts><page-count count="8"></page-count></counts></article-meta></front></pmc><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Ferrucci, Luigi G" sort="Ferrucci, Luigi G" uniqKey="Ferrucci L" first="Luigi G." last="Ferrucci">Luigi G. Ferrucci</name><name sortKey="Glynn, Nancy W" sort="Glynn, Nancy W" uniqKey="Glynn N" first="Nancy W." last="Glynn">Nancy W. Glynn</name></noCountry><country name="Canada"><noRegion><name sortKey="Richardson, Catherine A" sort="Richardson, Catherine A" uniqKey="Richardson C" first="Catherine A." last="Richardson">Catherine A. Richardson</name></noRegion><name sortKey="Mackey, Dawn C" sort="Mackey, Dawn C" uniqKey="Mackey D" first="Dawn C." last="Mackey">Dawn C. Mackey</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Amérique/explor/PittsburghV1/Data/Pmc/Checkpoint
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000052 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Pmc/Checkpoint/biblio.hfd -nk 000052 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Amérique
|area= PittsburghV1
|flux= Pmc
|étape= Checkpoint
|type= RBID
|clé= PMC:4447797
|texte= Walking Energetics, Fatigability, and Fatigue in Older Adults: The Study of Energy and Aging Pilot
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Pmc/Checkpoint/RBID.i -Sk "pubmed:25190069" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Pmc/Checkpoint/biblio.hfd \
| NlmPubMed2Wicri -a PittsburghV1
| This area was generated with Dilib version V0.6.38. |  |