臺灣有關於兒童身體活動行為的調查十分欠缺，本研究目的為探討學齡兒童的身體活動量，以及達到各種國際身體活動推薦量的比例。研究樣本涵蓋臺灣四大城市的463位（249位男生與214位女生）年齡為9到12歲的兒童，使用三日活動量表測量過去一週的身體活動。分齡分別報告男生與女生的估計平均每日能量消耗（大卡╱公斤╱天），平均每日中重度身體活動時間（分╱天）、以及平均每日重度身體活動時間（分╱天）的平均婁、標准差、中位數與百分位數之分佈；以四項國際身體活動推薦量作為檢測遵循率的標准。結果顯示：年齡與性別對估計每日能量消耗與中重度身體活動時間並無影響，且沒有交互作用；隨著年齡由9歲增加到11歲，拉開序幕身體活動量的參與率會大幅增加；但是女生在12歲時重度身體活動參與率顯著比男生少。整體而言，超過90%的兒童達到1994年青少年身體活動指引，以及美國2010年全民健康22.6號上標，80%達到英國專家共識團體推薦量，70%達到美國2010年全民健康22.7號上標，研究顯示本國兒童大多數符合國際推薦量，而年齡與性別只有對重度身體活動的參與率具有顯著的影響。此項結果可以提供兒童身體活動健康政策的決定性資料，並訂定兒童未來身體活動量之目標，建議未來能以更精確與一致的身體活動測量方法進行全國性監測調查。

　　　　　Few studies have investigated levels of physical activity among children in Taiwan. The purposes of this study were to explore levels of physical activity among children and examine their rates of compliance with various international recommendations. The sample was comprised 463 children (249 boys and 214 girls), aged between nine and twelve from four cities in Taiwan. Three-day Physical Activity Logs (3-d PAL) were used as the instrument to measure physical activity in the previous seven days. The mean and percentile of average estimated energy expenditure (EE, kcal/kg/day), moderate-vigorous physical activity (MVPA, mm/day) and vigorous physical activity (VPA, mm/day) among boys and girls according to age group were reported. Four international physical activity recommendations were used, as the criteria with which were examined compliance rates. Results indicated no significant main effects of age or gender, and no interaction was found between EE and MVPA. VPA significantly increased between the aged nine and eleven. Girls aged 12 engaged less significantly VPA than boys. Over 90% of children met the Physical Activity Guidelines for Adolescents (PAGA) and the United States’ Healthy People Objective No. 22.6; 80% met the United Kingdom Expert Consensus Group guideline; and 70% met the Healthy People Objective No. 22.7. These results indicated that physical activity among the majority of children complied with the international recommendations. The only significant difference came in participation rates for vigorous physical activity among children of different ages and gender. Our results provide important information for health policy in the field of children’s physical activity. We would recommend the setting up of national objectives for the physical activity of children and the conducting of a national surveillance study with a more precise and consistent measurement of physical activity for children to offer a comparable data in the future is suggested.