P. Komi

Publications423
h-index102
Citations31,574
Highly Influential Citations2,139
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A simple method for measurement of mechanical power in jumping
TLDR
The new jumping test seems suitable to evaluate the power output of leg extensor muscles during natural motion because of its high reproducibility and simplicity, and is suitable for laboratory and field conditions.
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Stretch-shortening cycle: a powerful model to study normal and fatigued muscle.
  • P. Komi
  • Biology
    Journal of biomechanics
  • 1 October 2000
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Utilization of stored elastic energy in leg extensor muscles by men and women.
TLDR
The results suggest that although the leg extensor muscles of the men subjects could sustain much higher stretch loads, the females may be able to utilize a greater portion of the stored elastic energy in jumping activities.
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Altered reflex sensitivity after repeated and prolonged passive muscle stretching.
TLDR
Evidence is presented that the mechanism that decreases the sensitivity of short-latency reflexes can be activated because of RPS, and the origin of this system seems to be a reduction in the activity of the large-diameter afferents, resulting from the reduced sensitivity of the muscle spindles to repeated stretch.
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Electromechanical delay in human skeletal muscle under concentric and eccentric contractions
TLDR
It is suggested that the time required to stretch the series elastic component (SEC) represents the major portion of the measured delay and that during eccentric muscle activity the SEC is in a more favorable condition for rapid force development.
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Knee and ankle joint stiffness in sprint running.
TLDR
In sprint running the spring-like behavior of the leg might be adjusted by changing the stiffness of the knee joint, which may depend on (constant) tendon stiffness because of its dominating role in triceps surae muscle-tendon unit.
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Muscle-tendon interaction and elastic energy usage in human walking.
TLDR
The findings suggest that the elastic recoil takes place not as a spring-like bouncing but as a catapult action in natural human walking.
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Biomechanics of Sprint Running
SummaryUnderstanding of biomechanical factors in sprint running is useful because of their critical value to performance. Some variables measured in distance running are also important in sprint…
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Effects of marathon running on running economy and kinematics
TLDR
Results demonstrate clearly that weakened running economy cannot be explained by changes in running mechanics, and it is suggested that the increased physiological loading is due to several mechanisms: increased utilization of fat as an energy substrate, increased demands of body temperature regulation, and possible muscle damage.
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Changes in isometric force- and relaxation-time, electromyographic and muscle fibre characteristics of human skeletal muscle during strength training and detraining.
TLDR
It was concluded that improvement in strength may be accounted for by neural factors during the course of very intensive strength training, especially in highly trained subjects.
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