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Influence of Musculo-Tendinous Stiffness of the Plantar Ankle Flexor Muscles upon Maximal Power Output on a Cycle Ergometre
- Source :
- European Journal of Applied Physiology, European Journal of Applied Physiology, 2012, 112 (11), pp.3721-3728. ⟨10.1007/s00421-012-2353-5⟩, European Journal of Applied Physiology, Springer Verlag, 2012, 112 (11), pp.3721-3728. ⟨10.1007/s00421-012-2353-5⟩
- Publication Year :
- 2012
- Publisher :
- HAL CCSD, 2012.
-
Abstract
- The importance of maximal voluntary torque (T (MVC)), maximal rate of torque development (MRTD) and musculo-tendinous stiffness of the triceps surae for maximal power output on a cycle ergometre (Pmax) was studied in 21 healthy subjects by studying the relationships between maximal cycling power related to body mass (Pmax BM(-1)) with T (MVC), MRTD and different indices of musculo-tendinous stiffness of the ankle flexor. Pmax BM(-1) was calculated from the data of an all-out force-velocity test on a Monark cycle ergometre. T (MVC) and MRTD were measured on a specific ankle ergometre. Musculo-tendinous stiffness was estimated by means of quick releases at 20, 40, 60 and 80% T (MVC) on the same ankle ergometre. Pmax BM(-1) was significantly and positively correlated with MRTD related to body mass but the positive correlation between Pmax BM(-1) and T (MVC) did not reach the significance level (0.05). Pmax BM(-1) was significantly and positively correlated with the estimation of stiffness at 40% T (MVC) (S(0.4)), but not with stiffness at 20, 60 and 80% T (MVC). The results of the present study suggest that maximal power output during cycling is significantly correlated with the level of musculo-tendinous stiffness which corresponds to torque range around peak torque at optimal pedal rate. However, the low coefficient of determination (r2 = 0.203) between Pmax BM(-1) and S (0.4) BM(-1) suggested that Pmax BM(-1) largely depended on other factors than the musculo-tendinous stiffness of the only plantar flexors.
- Subjects :
- Male
medicine.medical_specialty
Physiology
[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging
Positive correlation
Analyse du Mouvement en Biomécanique Physiologie et Imagerie
Plantar flexion
Tendons
Young Adult
03 medical and health sciences
0302 clinical medicine
Physiology (medical)
medicine
[SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]
Humans
Orthopedics and Sports Medicine
Power output
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
Muscle, Skeletal
Mathematics
Public Health, Environmental and Occupational Health
Healthy subjects
Stiffness
030229 sport sciences
General Medicine
Flexor muscles
Elasticity
Biomechanical Phenomena
medicine.anatomical_structure
Torque
Muscle Tonus
Exercise Test
Physical therapy
medicine.symptom
Ankle
Ankle Joint
030217 neurology & neurosurgery
Muscle Contraction
Biomedical engineering
Muscle contraction
Subjects
Details
- Language :
- English
- ISSN :
- 14396319 and 14396327
- Database :
- OpenAIRE
- Journal :
- European Journal of Applied Physiology, European Journal of Applied Physiology, 2012, 112 (11), pp.3721-3728. ⟨10.1007/s00421-012-2353-5⟩, European Journal of Applied Physiology, Springer Verlag, 2012, 112 (11), pp.3721-3728. ⟨10.1007/s00421-012-2353-5⟩
- Accession number :
- edsair.doi.dedup.....7c576efe39dc1ef71e04b6107811977e