成年人站立平衡之研究－動態平衡測驗之年齡效應

Age-related Changes in Dynamic Balance in Healthy Adults

林慧芬(Heui-Fen Lin) ； 胡名霞(Ming-Hsia Hu)

《中華民國物理治療學會雜誌》 20卷1期 (1995/03) Pp. 81-90

https://doi.org/10.29616/JPTAROC.199503.0009

摘要

The purpose of this study was to compare the dynamic balance of healthy adults in three age groups. A total of 51 subjects (20-78 years old) was divided into a young-age (n=17, 20-35 years old), a middle-age (n=15, 40-55 y/o), and an old-age (n=19, 60-78 years old) group All subjects were tested on a dynamic posturographic system (Balance Master system, NeuroCorn Int. Inc.) for their ability for (1) rhythmic weight shifting to left and right, (2) rhythmic weight shifting to forward and backward, and (3) weight shifting to 75% of the Limit of Stability (LOS). The postural sway path, amplitude, and time to targets were measured by a forceplate and analyzed by one-way ANOVAs. The results showed that the amplitude of postural sway differed significantly between age groups during the rhythmic weight shifting in the forward and backward directions (p＜.05). The young-age group swayed the largest, and the old-age group the least. No significant difference in the amplitude of postural sway between age groups in the left and right direction
during rhythmic weight shifting test was found. In the test of weight shift to 75% of LOS, the time to target was significantly different between the young- and old-age groups in 4 out of 8 tested directions. The 4 significantly different directions were forward, backward, left backward, and left (p＜.05). The sway path was significantly different between the young- and old- age groups for 3 (right, backward, left) out of the 8 tested directions. No differences were found between the middle-age group with the old-or the young-age groups. During the experiment, the researchers observed more older adults to select postural strategies different from the younger adults. Thus it is suspected that the declination in the dynamic balance ability in the old-age group may be due to changes in the selection of postural strategy. It is recommended that age effect be considered and postural strategy recorded when dynamic balance ability is to be evaluated in healthy adults.

關鍵字

平衡 ； 老年人 ； 動態平衡測驗

並列摘要

The purpose of this study was to compare the dynamic balance of healthy adults in three age groups. A total of 51 subjects (20-78 years old) was divided into a young-age (n=17, 20-35 years old), a middle-age (n=15, 40-55 y/o), and an old-age (n=19, 60-78 years old) group All subjects were tested on a dynamic posturographic system (Balance Master system, NeuroCorn Int. Inc.) for their ability for (1) rhythmic weight shifting to left and right, (2) rhythmic weight shifting to forward and backward, and (3) weight shifting to 75% of the Limit of Stability (LOS). The postural sway path, amplitude, and time to targets were measured by a forceplate and analyzed by one-way ANOVAs. The results showed that the amplitude of postural sway differed significantly between age groups during the rhythmic weight shifting in the forward and backward directions (p＜.05). The young-age group swayed the largest, and the old-age group the least. No significant difference in the amplitude of postural sway between age groups in the left and right direction
during rhythmic weight shifting test was found. In the test of weight shift to 75% of LOS, the time to target was significantly different between the young- and old-age groups in 4 out of 8 tested directions. The 4 significantly different directions were forward, backward, left backward, and left (p＜.05). The sway path was significantly different between the young- and old- age groups for 3 (right, backward, left) out of the 8 tested directions. No differences were found between the middle-age group with the old-or the young-age groups. During the experiment, the researchers observed more older adults to select postural strategies different from the younger adults. Thus it is suspected that the declination in the dynamic balance ability in the old-age group may be due to changes in the selection of postural strategy. It is recommended that age effect be considered and postural strategy recorded when dynamic balance ability is to be evaluated in healthy adults.

並列關鍵字

Equilibrium ； The aged ； Dynamic posturography