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PURPOSE: The purpose of this study was to investigate the effectiveness of cervicocephalic kinesthetic training on postural stability and neck joint position sense in healthy young adults. METHOD: 33 subjects were recruited for this study and randomly divided into training （n＝16） and control groups （n＝17）. The training group performed cervicocephalic kinesthetic training for 5 minutes per day for 10 days and the control group performed the same training but with eyes closed to eliminate visual feedback. All training sessions for both groups were performed under supervision. Pre and post cervical joint position sense and sensory organization testing （SOT） were measured on both groups. RESULT: Significant differences were found in cervical joint position sense and SOT condition 6 in the training group. No significant differences were found in SOT condition1-5 in both groups and cervical joint position in the control group. CONCLUSION: The improvements of postural stability and cervical joint position sense after 10 days of cervicocephalic kinesthetic training suggest that cervical joint position sense may may be beneficial for postural stability in healthy young adults.

PURPOSE: The purpose of this study was to investigate muscle activation using electromyography （EMG）, postural control using computerized dynamic posturography （CDP） and spatioal body movements using accelerometery in different conditions in healthy young and older adults. METHOD: Nine healthy young adults and eight healthy older adults without history of neurological disease or falls participated in this study. Postural control was measured using the NeuroCom Equi-test CDP in 6 different conditions. Spatial body movements were measured by an accelerometer placed on the top of subject's head, sacrum and lateral knee joint. RESULTS: Compared to the young adults, healthy older adults had lower postural control scores in conditions 2, 5 and 6; spatial body movements were larger in forward-backward direction during condition 5 and in vertical direction during condition 6. EMG of Tibialis Anterior, Stenocreidmastoid and Rectus Abdominals in the older adults were more activated. CONCLUSION: Young adults were able to maintain better postural control with lower muscle activation compared to older adults.