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Adjustment of muscle coordination during an all-out sprint cycling task
- Source :
- Medicine and Science in Sports and Exercise, Medicine and Science in Sports and Exercise, American College of Sports Medicine (ACSM), 2012, 44 (11), pp.2154-2164. ⟨10.1249/MSS.0b013e3182625423⟩
- Publication Year :
- 2012
- Publisher :
- HAL CCSD, 2012.
-
Abstract
- International audience; Purpose: This study was designed to assess muscle coordination during a specific all-out sprint cycling task (Sprint). The aim was to estimate the EMG activity level of each muscle group by referring to the submaximal cycling condition (Sub150 W) and to test the hypothesis that a maximal activity is reached for all of the muscles during Sprint.Methods: Fifteen well-trained cyclists were tested during submaximal and sprint cycling exercises and a series of maximal voluntary contractions (MVCs) in isometric and isokinetic modes (MVC at the three lower limb joints). Crank torque and surface EMG signals for 11 lower limb muscles were continuously measured.Results:Results showed that Sprint induced a very large increase of EMG activity level for the hip flexors (multiplied by 7–9 from 150 W to Sprint) and the knee flexors and hip extensors (multiplied by 5–7), whereas plantar flexors and knee extensors demonstrated a lower increase (multiplied by 2–3). During Sprint, EMG activity level failed to reach a maximal value for hamstrings, tibialis anterior, tensor fasciae latae, and gluteus maximus (i.e.
- Subjects :
- Adult
Male
medicine.medical_specialty
Adolescent
Physical Exertion
[SHS.SPORT.PS]Humanities and Social Sciences/Sport/Sport physiology
Physical Therapy, Sports Therapy and Rehabilitation
Isometric exercise
Electromyography
Plantar flexion
NORMALIZATION
Young Adult
03 medical and health sciences
0302 clinical medicine
medicine
Humans
Orthopedics and Sports Medicine
MULTIJOINT TASK
medicine.diagnostic_test
Knee extensors
business.industry
Work (physics)
MAXIMAL POWER OUTPUT
[SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph]
030229 sport sciences
musculoskeletal system
ELECTROMYOGRAPHY
MAXIMAL VOLUNTARY CONTRACTION
Bicycling
Motor coordination
PEDALING
body regions
Lower Extremity
Torque
Sprint
Exercise Test
Physical therapy
Female
Cycling
business
human activities
030217 neurology & neurosurgery
Muscle Contraction
Subjects
Details
- Language :
- English
- ISSN :
- 01959131 and 15300315
- Database :
- OpenAIRE
- Journal :
- Medicine and Science in Sports and Exercise, Medicine and Science in Sports and Exercise, American College of Sports Medicine (ACSM), 2012, 44 (11), pp.2154-2164. ⟨10.1249/MSS.0b013e3182625423⟩
- Accession number :
- edsair.doi.dedup.....30c490300ba2d9c6d5260346885efad3
- Full Text :
- https://doi.org/10.1249/MSS.0b013e3182625423⟩