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- W1969920746 abstract "The objectives of the present study were to describe the volleyball spiking actions used by top-level collegiate players, and to examine the effect fatigue may have on these actions. Volleyball spiking actions of nine varsity collegiate women were three-dimensionally analyzed across 50 trials near the end of their competitive season. Relationships between lower limb angular kinematics at take-off, center of mass vertical velocity and vertical displacement, as well as upper limb angular kinematics of the hitting arm and post-impact ball speed were examined. The mean center of mass vertical velocity was 3.1 ± .05 m/s and mean jump height was .49 ± .02 m. Mean post-impact ball velocity was 23.5 ± .7 m/s in the early trials, decreasing to 21.6 m/s during the later trials. A significant decrement was seen in center of mass (CM) take-off velocity, CM height, and hitting accuracy across trials, and these were significantly correlated (r = −0.84, −0.82, and −0.78 respectively; p < .01) to the participants' rating of perceived exertion (RPE). Right elbow angular velocity also significantly decreased across trials. Changes were observed in the relative shoulder and trunk angles at point of ball contact across trials, and were significantly correlated to RPE (r = .79; p < .01). The results of this study revealed that fatigue induced changes do occur in the kinematics of a volleyball spike. Players also appear to compensate for their decreased CM height by altering upper limb angles at the point of contact with the ball. Such changes also appear to be detrimental to the performance of the skill, with decreased ball velocities and hitting accuracy." @default.
- W1969920746 created "2016-06-24" @default.
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- W1969920746 date "2001-05-01" @default.
- W1969920746 modified "2023-09-27" @default.
- W1969920746 title "FATIGUE INDUCED KINEMATIC CHANGES IN A VOLLEYBALL SPIKE" @default.
- W1969920746 doi "https://doi.org/10.1097/00005768-200105001-01341" @default.
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