排灣族學童體重及身體質量指數之縱貫性研究－－以屏東縣力里國小學童為例

Body weight and body mass index of Pai-Wan children: a longitudinal study in the Lili Primary School

本研究主要目的在追蹤排灣族學童體重及身體質量指數之生長發育的變化情形。研究期間從1994年9月追蹤至2000年3月，研究對象為屏東縣力里國小全校學生。全部總施測人數為419人（男生203人、女生216人），一到六年級每位受測者每隔半年同時施測一次，追蹤施測的次數為2至12次不等。研究結果顯示6.5歲至12.5歲間，男女生體重之成長在10.0歲之前，二者差異不大，10.0歲以後，男女生體重之差異逐漸增大，女生重於男生，女生體重成長逐漸加快，此種趨勢一直維持至12.5歲，同時，身體質量指數之變化趨勢亦與體重之成長情形類似。男女生體重平均成長幅度在10.5歲時差距最大，女生大於男生達2.42 kg/yr，BMI成長幅度的差異亦在10.5歲時差距最大，女生的成長幅度大於男生達0.80 kg/m2/yr。本研究與民國80年我國男女生體重及身體質量指數百分位數常模比較之後，發現本研究男女學童之體重稍微低於第50百分位數，BMI則超過第50百分位數。

With a view to assess body weight and body mass index (BMI), a longitudinal study was made on 419 Pai-Wan school children (203 boys and 216 girls), aged 6.5 to 12.5 years. Body weight and BMI were taken from September 1994 to March 2000. Measurements at intervals of 6 months were conducted to monitor changes in body weight and BMI. The difference of body weight for boys and girls, from 6.5 to 10.0 years, was tiny. After 10.0 years old, body weight of girls was gradually heavier than that of boys. The difference of BMI for both sexes was similar to that of body weight. The maximum difference of weight velocity and BMI velocity for both sexes were 2.42 kg/yr and 0.80 kg/m2/yr at 10.5 years old, respectively. As compared to nationwide reference (NR), body weight of boys and girls were slightly lower than the 50th percentile of NR, but BMI of both sexes were higher than the 50th percentile of NR.