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Effects of eccentric training on mechanical properties of the plantar flexor muscle-tendon complex
- Source :
- Journal of Applied Physiology, Journal of Applied Physiology, American Physiological Society, 2013, 114 (5), pp.523-537. ⟨10.1152/japplphysiol.01313.2011⟩, Journal of Applied Physiology, 2013, 114 (5), pp.523-537. ⟨10.1152/japplphysiol.01313.2011⟩
- Publication Year :
- 2013
- Publisher :
- American Physiological Society, 2013.
-
Abstract
- Eccentric training is a mechanical loading classically used in clinical environment to rehabilitate patients with tendinopathies. In this context, eccentric training is supposed to alter tendon mechanical properties but interaction with the other components of the muscle-tendon complex remains unclear. The aim of this study was to determine the specific effects of 14 wk of eccentric training on muscle and tendon mechanical properties assessed in active and passive conditions in vivo. Twenty-four subjects were randomly divided into a trained group ( n = 11) and a control group ( n = 13). Stiffness of the active and passive parts of the series elastic component of plantar flexors were determined using a fast stretch during submaximal isometric contraction, Achilles tendon stiffness and dissipative properties were assessed during isometric plantar flexion, and passive stiffness of gastrocnemii muscles and Achilles tendon were determined using ultrasonography while ankle joint was passively moved. A significant decrease in the active part of the series elastic component stiffness was found ( P < 0.05). In contrast, a significant increase in Achilles tendon stiffness determined under passive conditions was observed ( P < 0.05). No significant change in triceps surae muscles and Achilles tendon geometrical parameters was shown ( P > 0.05). Specific changes in muscle and tendon involved in plantar flexion are mainly due to changes in intrinsic mechanical properties of muscle and tendon tissues. Specific assessment of both Achilles tendon and plantar flexor muscles allowed a better understanding of the functional behavior of the muscle-tendon complex and its adaptation to eccentric training.
- Subjects :
- Adult
Male
musculoskeletal diseases
medicine.medical_specialty
Physiology
[SDV]Life Sciences [q-bio]
Musculoskeletal Physiological Phenomena
Context (language use)
Achilles Tendon
Plantar flexion
Education
Tendons
Young Adult
03 medical and health sciences
0302 clinical medicine
Physical medicine and rehabilitation
Isometric Contraction
Physiology (medical)
[SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]
medicine
Humans
Range of Motion, Articular
Muscle, Skeletal
Passive stiffness
ComputingMilieux_MISCELLANEOUS
Mechanical Phenomena
Ultrasonography
Achilles tendon
Electromyography
business.industry
[SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph]
030229 sport sciences
musculoskeletal system
Elasticity
Tendon
body regions
medicine.anatomical_structure
Torque
Physical therapy
Eccentric training
business
Range of motion
Ankle Joint
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 15221601 and 87507587
- Volume :
- 114
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physiology
- Accession number :
- edsair.doi.dedup.....3952351b8071cec73ad10bbfddf9aa1f