Metabolic Power Requirement of Change of Direction Speed in Young Soccer Players: Not All Is What It Seems
Identifieur interne : 001B21 ( Main/Exploration ); précédent : 001B20; suivant : 001B22Metabolic Power Requirement of Change of Direction Speed in Young Soccer Players: Not All Is What It Seems
Auteurs : Karim Hader [France, Qatar] ; Alberto Mendez-Villanueva [Qatar] ; Dino Palazzi [Qatar] ; Saïd Ahmaidi [France] ; Martin Buchheit [France, Australie]Source :
- PLoS ONE [ 1932-6203 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- physiology : Athletic Performance, Muscles, Running, Soccer.
- Adolescent, Biomechanical Phenomena, Electromyography, Energy Metabolism, Humans, Male.
Abstract
The aims of this study were to 1) compare the metabolic power demand of straight-line and change of direction (COD) sprints including 45° or 90°-turns, and 2) examine the relation between estimated metabolic demands and muscular activity throughout the 3 phases of COD-sprints.
Twelve highly-trained soccer players performed one 25-m and three 20-m sprints, either in straight-line or with one 45°- or 90°-COD. Sprints were monitored with 2 synchronized 100-Hz laser guns to assess players’ velocities before, during and after the COD. Acceleration and deceleration were derived from changes in speed over time. Metabolic power was estimated based on di Prampero’s approach (2005). Electromyography amplitude (RMS) of 2 lower limb muscles was measured. The expected energy expenditure during time-adjusted straight-line sprints (matching COD sprints time) was also calculated.
Locomotor-dependant metabolic demand was
Present results show that COD-sprints are largely less metabolically demanding than linear sprints. This may be related to the very low metabolic demand associated with the deceleration phase during COD-sprints that may not be compensated by the increased requirement of the reacceleration phase. These results also highlight the dissociation between metabolic and muscle activity demands during COD-sprints, which questions the use of metabolic power as a single measure of running load in soccer.
Url:
DOI: 10.1371/journal.pone.0149839
PubMed: 26930649
PubMed Central: 4773143
Affiliations:
- Australie, France, Qatar
- Hauts-de-France, Picardie, Victoria (État), Île-de-France
- Amiens, Melbourne, Saint-Germain-en-Laye
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Sciences, University of Picardie, Jules Verne, 80025 Amiens</wicri:regionArea><placeName><region type="region" nuts="2">Hauts-de-France</region><region type="old region" nuts="2">Picardie</region><settlement type="city">Amiens</settlement></placeName></affiliation><affiliation wicri:level="1"><nlm:aff id="aff002"><addr-line>National Sports Medicine Programme, Excellence in Football Project, Aspetar-Orthopaedic and Sports Medicine Hospital, Doha, Qatar</addr-line></nlm:aff><country xml:lang="fr">Qatar</country><wicri:regionArea>National Sports Medicine Programme, Excellence in Football Project, Aspetar-Orthopaedic and Sports Medicine Hospital, Doha</wicri:regionArea><wicri:noRegion>Doha</wicri:noRegion></affiliation></author><author><name sortKey="Mendez Villanueva, Alberto" sort="Mendez Villanueva, Alberto" uniqKey="Mendez Villanueva A" first="Alberto" last="Mendez-Villanueva">Alberto Mendez-Villanueva</name><affiliation wicri:level="1"><nlm:aff id="aff003"><addr-line>Sport Science 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80025 Amiens, France</addr-line></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea>Laboratory of Exercise Physiology and Rehabilitation, EA 3300, Faculty of Sport Sciences, University of Picardie, Jules Verne, 80025 Amiens</wicri:regionArea><wicri:noRegion>80025 Amiens</wicri:noRegion><wicri:noRegion>80025 Amiens</wicri:noRegion></affiliation></author><author><name sortKey="Buchheit, Martin" sort="Buchheit, Martin" uniqKey="Buchheit M" first="Martin" last="Buchheit">Martin Buchheit</name><affiliation wicri:level="1"><nlm:aff id="aff004"><addr-line>Sport Science Department, Myorobie Association, Montvalezan, France</addr-line></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea>Sport Science Department, Myorobie Association, Montvalezan</wicri:regionArea><wicri:noRegion>Montvalezan</wicri:noRegion><wicri:noRegion>Montvalezan</wicri:noRegion></affiliation><affiliation wicri:level="3"><nlm:aff id="aff005"><addr-line>Performance Department, Paris Saint Germain Football Club, Saint-Germain-en-Laye, France</addr-line></nlm:aff><country xml:lang="fr">France</country><wicri:regionArea>Performance Department, Paris Saint Germain Football Club, Saint-Germain-en-Laye</wicri:regionArea><placeName><region type="region">Île-de-France</region><region type="old region">Île-de-France</region><settlement type="city">Saint-Germain-en-Laye</settlement></placeName></affiliation><affiliation wicri:level="3"><nlm:aff id="aff006"><addr-line>Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne, Australia</addr-line></nlm:aff><country xml:lang="fr">Australie</country><wicri:regionArea>Institute of Sport, Exercise and Active Living, College of Sport and Exercise Science, Victoria University, Melbourne</wicri:regionArea><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName></affiliation></author></analytic><series><title level="j">PLoS ONE</title><idno type="eISSN">1932-6203</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adolescent</term><term>Athletic Performance (physiology)</term><term>Biomechanical Phenomena</term><term>Electromyography</term><term>Energy Metabolism</term><term>Humans</term><term>Male</term><term>Muscles (physiology)</term><term>Running (physiology)</term><term>Soccer (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Adolescent</term><term>Course à pied (physiologie)</term><term>Football (physiologie)</term><term>Humains</term><term>Muscles (physiologie)</term><term>Mâle</term><term>Métabolisme énergétique</term><term>Performance sportive (physiologie)</term><term>Phénomènes biomécaniques</term><term>Électromyographie</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Course à pied</term><term>Football</term><term>Muscles</term><term>Performance sportive</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Athletic Performance</term><term>Muscles</term><term>Running</term><term>Soccer</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adolescent</term><term>Biomechanical Phenomena</term><term>Electromyography</term><term>Energy Metabolism</term><term>Humans</term><term>Male</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Adolescent</term><term>Humains</term><term>Mâle</term><term>Métabolisme énergétique</term><term>Phénomènes biomécaniques</term><term>Électromyographie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="sec001"><title>Purpose</title><p>The aims of this study were to 1) compare the metabolic power demand of straight-line and change of direction (COD) sprints including 45° or 90°-turns, and 2) examine the relation between estimated metabolic demands and muscular activity throughout the 3 phases of COD-sprints.</p></sec><sec id="sec002"><title>Methods</title><p>Twelve highly-trained soccer players performed one 25-m and three 20-m sprints, either in straight-line or with one 45°- or 90°-COD. Sprints were monitored with 2 synchronized 100-Hz laser guns to assess players’ velocities before, during and after the COD. Acceleration and deceleration were derived from changes in speed over time. Metabolic power was estimated based on di Prampero’s approach (2005). Electromyography amplitude (RMS) of 2 lower limb muscles was measured. The expected energy expenditure during time-adjusted straight-line sprints (matching COD sprints time) was also calculated.</p></sec><sec id="sec003"><title>Results</title><p>Locomotor-dependant metabolic demand was <italic>largely</italic> lower with COD (90°, 142.1±13.5 J.kg<sup>-1</sup>) compared with time-adjusted (effect size, ES = -3.0; 193.2±18.6 J.kg<sup>-1</sup>) and non-adjusted straight-line sprints (ES = -1.7; 168.4±15.3 J.kg<sup>-1</sup>). Metabolic power requirement was angle-dependent, <italic>moderately</italic> lower for 90°-COD vs. 45°-COD sprint (ES = -1.0; 149.5±10.4 J.kg<sup>-1</sup>). Conversely, the RMS was <italic>slightly</italic>- (45°, ES = +0.5; +2.1%, 90% confidence limits (±3.6) for vastus lateralis muscle (VL)) to-<italic>largely</italic> (90°, ES = +1.6; +6.1 (3.3%) for VL) greater for COD-sprints. Metabolic power/RMS ratio was 2 to 4 times lower during deceleration than acceleration phases.</p></sec><sec id="sec004"><title>Conclusion</title><p>Present results show that COD-sprints are largely less metabolically demanding than linear sprints. This may be related to the very low metabolic demand associated with the deceleration phase during COD-sprints that may not be compensated by the increased requirement of the reacceleration phase. These results also highlight the dissociation between metabolic and muscle activity demands during COD-sprints, which questions the use of metabolic power as a single measure of running load in soccer.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Karcher, C" uniqKey="Karcher C">C Karcher</name></author><author><name sortKey="Buchheit, M" uniqKey="Buchheit M">M Buchheit</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Carling, C" uniqKey="Carling C">C Carling</name></author><author><name sortKey="Bloomfield, J" uniqKey="Bloomfield J">J Bloomfield</name></author><author><name sortKey="Nelsen, L" uniqKey="Nelsen L">L Nelsen</name></author><author><name sortKey="Reilly, T" uniqKey="Reilly T">T Reilly</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Reilly, T" uniqKey="Reilly T">T Reilly</name></author><author><name sortKey="Bangsbo, J" uniqKey="Bangsbo J">J 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sortKey="Colby, Sm" uniqKey="Colby S">SM Colby</name></author><author><name sortKey="Kirkendall, Dt" uniqKey="Kirkendall D">DT Kirkendall</name></author><author><name sortKey="Yu, B" uniqKey="Yu B">B Yu</name></author><author><name sortKey="Garrett, We" uniqKey="Garrett W">WE Garrett</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hunter, Jp" uniqKey="Hunter J">JP Hunter</name></author><author><name sortKey="Marshall, Rn" uniqKey="Marshall R">RN Marshall</name></author><author><name sortKey="Mcnair, Pj" uniqKey="Mcnair P">PJ McNair</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Jones, Pa" uniqKey="Jones P">PA Jones</name></author><author><name sortKey="Herrington, Lc" uniqKey="Herrington L">LC Herrington</name></author><author><name sortKey="Graham Smith, P" uniqKey="Graham Smith P">P Graham-Smith</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Australie</li><li>France</li><li>Qatar</li></country><region><li>Hauts-de-France</li><li>Picardie</li><li>Victoria (État)</li><li>Île-de-France</li></region><settlement><li>Amiens</li><li>Melbourne</li><li>Saint-Germain-en-Laye</li></settlement></list><tree><country name="France"><region name="Hauts-de-France"><name sortKey="Hader, Karim" sort="Hader, Karim" uniqKey="Hader K" first="Karim" last="Hader">Karim Hader</name></region><name sortKey="Ahmaidi, Said" sort="Ahmaidi, Said" uniqKey="Ahmaidi S" first="Saïd" last="Ahmaidi">Saïd Ahmaidi</name><name sortKey="Buchheit, Martin" sort="Buchheit, Martin" uniqKey="Buchheit M" first="Martin" last="Buchheit">Martin Buchheit</name><name sortKey="Buchheit, Martin" sort="Buchheit, Martin" uniqKey="Buchheit M" first="Martin" last="Buchheit">Martin Buchheit</name></country><country name="Qatar"><noRegion><name sortKey="Hader, Karim" sort="Hader, Karim" uniqKey="Hader K" first="Karim" last="Hader">Karim Hader</name></noRegion><name sortKey="Mendez Villanueva, Alberto" sort="Mendez Villanueva, Alberto" uniqKey="Mendez Villanueva A" first="Alberto" last="Mendez-Villanueva">Alberto Mendez-Villanueva</name><name sortKey="Palazzi, Dino" sort="Palazzi, Dino" uniqKey="Palazzi D" first="Dino" last="Palazzi">Dino Palazzi</name></country><country name="Australie"><region name="Victoria (État)"><name sortKey="Buchheit, Martin" sort="Buchheit, Martin" uniqKey="Buchheit M" first="Martin" last="Buchheit">Martin Buchheit</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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