Ball, Thomas E.
M.S. Ed. (Master of Education)
Department of Physical Education
Joints--Range of motion||Ankle--Muscles||Knee--Muscles||Women dancers--Health and hygiene||Women college students--Health and hygiene
The purpose of this study was to determine the effect of ankle position, plantar flexion, neutral and dorsiflexion, on the isokinetic knee extensor and flexor strength of university advanced level dancers compared to university sedentary females. The subjects were 18 advanced level dancers and 18 sedentary females. A MERAC isokinetic dynamometer was used to take peak torque measures. The subjects were tested in a seated position at velocities of 60 and 1807s with the ankle in a position of plantar flexion, neutral and dorsiflexion. It was found that subjects could not maintain a neutral position of the ankle during testing, thus the data collected for the neutral position was not analyzed. The results of a 2 x 2 repeated measures ANOVA (P < .05) showed no significant interaction between ankle position and group. The main effect of ankle position was significantly greater knee flexor peak torque in all tests of the knee flexors with the ankle dorsiflexed than plantar flexed, and significantly greater knee extensor peak torque at 60?/s on the dominant leg with the ankle plantar flexed than dorsiflexed. The main effect of group resulted in the dancers having significantly greater knee flexor peak torque of the dominant limb at 60 and 1807s, and the nondominant limb at 1807s. The intraclass reliability coefficients, R, ranged from .89 to 1.00.
Nakaji, Denise C., "The effects of ankle position on the isokinetic knee extensor and flexor strength of university advanced level dancers compared to university sedentary females" (1999). Graduate Research Theses & Dissertations. 5612.
Northern Illinois University
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