Gavarry O, Bernard T, Giacomoni M, Seymat M, Euzet J P, Falgairette G
Laboratoire de Recherche sur les Activités Physiques et Sportives, U.F.R.S.T.A.P.S., Université de Nice Sophia-Antipolis, France.
Eur J Appl Physiol Occup Physiol. 1998;77(1-2):125-32. doi: 10.1007/s004210050310.
Heart rate (HR) was monitored in 66 French pubertal boys (B, n = 28) and girls (G, n = 38) aged 11-16 years to evaluate habitual physical activity (HPA) over a 1-week period in the winter. The HR and the percentage of heart rate reserve (%HRR) were taken to be indexes of the metabolic activity for the whole day and for the different parts of the day. The HPA was evaluated from the time spent each day below 50%HRR, between 50%-70%HRR and above 70%HRR, which related to the time spent in no or low physical activity (NLPA), moderate physical activity (MPA) and vigorous physical activity (VPA), respectively. No sex differences were observed in the average %HRR each day [%HRRmean, [B 30 (SD 4)%; G 32 (SD 4)%]] or in NLPA [B 715 (SD 61) min, G 711 (SD 81) min] and VPA [B 19 (SD 16) min, G 21 (SD 21) min] throughout the week. During school days, daily %HRRmean was 7% smaller in 14-16 year olds compared to 11-13 year olds. This was linked to a decrease in MPA and a concomitant increase in NLPA (P < 0.05). Daily %HRRmean varied significantly during the week (range: 28-34% HRR). There were significant differences among the periods of the day (P < 0.05). The HR was the greatest during physical education lessons [128 (SD 11) beats x min(-1)], recreation [113 (SD 15) beats x min(-1)] and lunch break [108 (SD 12) beats x min(-1)] and the lowest during the evening [94 (SD 10) beats x min(-1)]. It was only during the lunch breaks that %HRRmean was greater (P < 0.05) on school days than on free days. Of all the teenagers studied 32% were considered active during the week.
对66名年龄在11至16岁的法国青春期男孩（n = 28）和女孩（n = 38）进行心率（HR）监测，以评估冬季1周内的习惯性身体活动（HPA）。心率和心率储备百分比（%HRR）被用作全天及一天中不同时段代谢活动的指标。通过每天处于50%HRR以下、50%-70%HRR之间以及70%HRR以上的时间来评估HPA，这些时间段分别对应无或低身体活动（NLPA）、中等身体活动（MPA）和剧烈身体活动（VPA）所花费的时间。在每天的平均%HRR【%HRRmean，男孩30（标准差4）%；女孩32（标准差4）%】、一周内的NLPA【男孩715（标准差61）分钟，女孩711（标准差81）分钟】和VPA【男孩19（标准差16）分钟，女孩21（标准差21）分钟】方面未观察到性别差异。在上学日，14至16岁青少年的每日%HRRmean比11至13岁青少年低7%。这与MPA减少以及NLPA相应增加有关（P < 0.05）。一周内每日%HRRmean变化显著（范围：28 - 34%HRR）。一天中的不同时段存在显著差异（P < 0.05）。体育课期间心率最高【128（标准差11）次/分钟】，课间休息【113（标准差15）次/分钟】和午餐休息时次之【108（标准差12）次/分钟】，晚上最低【94（标准差10）次/分钟】。仅在午餐休息时，上学日的%HRRmean比休息日更高（P < 0.05）。在所有研究的青少年中，32%的人在一周内被认为是活跃的。
