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Comparison of muscle and tendon stiffness, jumping ability muscle strength and fatigue in the plantar flexors
Author(s) -
Svantesson U.,
Carlsson U.,
Takahashi H.,
Thomée R.,
Grimby G.
Publication year - 1998
Publication title -
scandinavian journal of medicine and science in sports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.575
H-Index - 115
eISSN - 1600-0838
pISSN - 0905-7188
DOI - 10.1111/j.1600-0838.1998.tb00479.x
Subject(s) - jumping , heel , plantar flexion , tendon , dynamometer , physical medicine and rehabilitation , medicine , squat , muscle stiffness , stiffness , muscle strength , physical therapy , anatomy , ankle , materials science , physiology , engineering , composite material , aerospace engineering
Svantesson U, Carlsson U, Takahashi H, Thomée R, Grimby G. Comparison of muscle and tendon stiffness, jumping ability, muscle strength and fatigue in the plantar flexors. An isokinetic dynamometer was used to measure plantar flexion muscle strength at 60°/s and 200°/s in 10 healthy young men (mean age 25 years). Muscle and tendon stiffnesses were determined on the dynamometer by the use of electrical stimulation and passive stretch (200°/s). Differences in jumping heights between squat and counter‐movement jumps were calculated from flight times. The number of heel‐rises performed until exhaustion, standing on one leg, were counted. Stepwise regression analysis showed that differences in jumping height increased with lower muscle strength and with higher muscle and tendon stiffnesses, indicating that elastic components may be of more importance in persons with lower muscle strength. The number of heel‐rises was negatively dependant on tendon stiffness, indicating that increased stiffness may enhance the development of fatigue.