Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
©Journal of Sports Science and Medicine (2023) 22, 189 - 195   DOI:

Research article
Joint Coordination and Muscle-Tendon Interaction Differ Depending on The Level of Jumping Performance
Iseul Jo1,3, Hae-Dong Lee2,3, 
Author Information
1 Department of Physical Education, Graduate School of Yonsei University, Seoul, Korea
2 Department of Physical Education, College of Educational Sciences, Yonsei University, Seoul, Korea
3 Frontier Research Institute of Convergence Sports Science, College of Educational Sciences, Yonsei University, Seoul, Korea

Hae-Dong Lee
✉ PhD Department of Physical Education, College of Educational Sciences, Yonsei University, Seoul, Korea
Publish Date
Received: 30-01-2023
Accepted: 13-03-2023
Published (online): 01-06-2023

The countermovement jump is a popular measurement modality to evaluate muscle power in sports and exercise. Muscle power is essential to achieve a high jump, yet the well-coordinated movement of the body segments, which optimizes the stretch-shortening cycle (SSC) effects, is also required. Among the proposed explanations of SSC effects, this study investigated whether the ankle joint kinematics, kinetics, and muscle-tendon interaction depend on the level of jump skill and the jump task. Sixteen healthy males were grouped as a function of their jump height (High jumpers; greater than 50 cm, Low jumpers; less than 50 cm). They were instructed to jump with two intensities; light effort (20 % of their height) and maximal effort. Joint kinematics and kinetics of the lower limbs were analyzed using a 3-dimensional motion analysis system. The muscle-tendon interaction was investigated using B-mode real-time ultrasonography. As the jump intensity increased, all participants jumped with increased joint velocity and power. However, the high jumper shows less fascicle shortening velocity (-0.2 ± 0.1 m/s) than the low jumper group (-0.3 ± 0.1 m/s) and greater tendon velocity, which indicated the capability of elastic energy recoil. In addition, the delayed onset time of ankle extension in the high jumper implies better use of the catapult mechanism. The findings of this study showed that the muscle-tendon interaction differs depending on the jump skill level, suggesting a more efficient neuromuscular control in skilled jumpers.

Key words: Ankle plantar flexor, dynamic catch mechanism, force-velocity relationship, force-power relationship, series elastic elements

           Key Points
  • As jump intensity increases, the kinematics and kinetics of the lower extremity enhance as expected, regardless of jumping skill level.
  • But, the higher jumping group seems to utilize the dynamic catapult-like mechanism better.
  • When analyzing jump performance, muscle-tendon interaction, in addition to joint coordination, should be considered an essential factor.
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