目標：應用加速度計步器來檢測社區老年人之日常身體活動現況，以提供基礎資訊作為未來身體活動促進方案建構之參考。方法：以台北市內湖區51名老年人(身體質量指數(BMI) 25.1±3.6；平均年齡72.7±6.4歲)為對象，分析其平均每日的步數、非步行之靜態行為時間、動態性身體活動(如低及中強度)時間及身體特徵與各身體活動資料之間的相關性。此外，本研究亦檢視每日步數與動態性身體活動時間之間的關連。結果：受試者之平均每日步數為9,127±3,598步，平均每日花費在非步行之靜態行為時間為562.9±124.8分鐘，平均每日花費在低及中強度身體活動時間分別為76.4±28.5分鐘及20.8±16.7分鐘。BMI與各身體活動資料之間無顯著的相關性(p＞0.05)，但年齡與身體活動資料之間有顯著的負相關性(p＜0.05)。另外，平均每日步數大於10,000步之受試者的低及中強度身體活動時間分別約為102.6±30.9分鐘及5.4±19.9分鐘。結論：年齡會影響老年人的身體活動。社區老年人之每日步數若大於10,000步時可符合現今對老年人之低強度(60分鐘)及中強度 (20-30分鐘)身體活動時間的建議值。

Objectives: To use the acceleration-pedometer to investigate the daily physical activities of elders in the community as a data base for future promotion of physical activity. Methods: Fiftyone individuals (body mass index (BMI) 25.1 ± 3.6, mean age 72.7 ± 6.4 yrs) who lived in the
Neihu area in Taipei city were recruited for this study. The average number of daily steps, the sedentary time of non-ambulatory behaviors, the time in dynamic physical activities (including lowand moderate-intensity activities) and the relationships between physical characteristics and daily physical activities were investigated. The associations between the number of daily steps and time in dynamic physical activities were also examined. Results: The average number of daily steps,the sedentary time of non-ambulatory behaviors, and the time in low-intensity and moderate-intensity physical activities were 9,127 ± 3,598 steps, 562.9 ± 124.8 min, 76.4 ± 28.5 min and 20.8 ±16.7 min, respectively. The times in low- and moderate-intensity activity for the subjects who took over 10,000 steps per day were 102.6 ± 30.9 min and 35.4 ± 19.9 min. BMI did not correlate with daily physical activities (p > 0.05); however, age was negatively correlated with daily physical
activities (p < 0.05). Conclusions: Age impacts on daily physical activities in the elderly. Those elders in the community who take over 10,000 steps per day may simultaneously meet the recommendations
for daily time in low-intensity (60 min) and moderate-intensity (20-30 min) physical activity.