Department of Kinesiology and Health Education, The University of Texas at Austin, TX 78712, USA.
Prev Med. 2011 Jun;52 Suppl 1:S55-9. doi: 10.1016/j.ypmed.2011.01.019. Epub 2011 Jan 31.
This present study examined time spent in the target heart zone (THZ) and its relationship to tasks requiring variable amounts of executive control function in prepubescent children participating in a 9-month randomized controlled physical activity program.
A sample of 59 participants performed the Stroop Color-Word Test and the Comprehensive Trail Making Test cognitive assessments. Heart rate data were collected during participation in the physical activity program using E600 heart rate monitors (Polar, Finland).
There was a significant difference, F(1, 58)=7.44, p <.009, between males and females for relative VO2max, but not absolute (p=.69) or percent VO2max (p=.73). Regression analysis identified KBIT, age, and mean time above the THZ as significant predictors of performance in the Stroop Color-Word condition, F(1, 56)=5.21, p=.02. KBIT and mean time above the THZ were significant predictors for Trails B, F(1, 56)=7.60.
These results suggest that heart rate, as a measure of physical activity intensity, should be closely monitored during research that is intended to make inferences about its effects on cognitive performance as participation in vigorous activities may have specific benefits over lower intensities among prepubescent children.
本研究考察了目标心率区（THZ）的时间分配及其与执行控制功能要求不同的任务之间的关系，这些任务涉及参与 9 个月随机对照身体活动计划的青春期前儿童。
59 名参与者完成了 Stroop 颜色-单词测试和综合追踪测试认知评估。使用 E600 心率监测器（芬兰 Polar）在身体活动计划期间收集心率数据。
男性和女性之间存在显著差异，F(1, 58)=7.44，p<.009，用于相对 VO2max，但不是绝对（p=.69）或百分比 VO2max（p=.73）。回归分析确定 KBIT、年龄和 THZ 以上的平均时间是 Stroop 颜色-单词条件下表现的重要预测指标，F(1, 56)=5.21，p=.02。KBIT 和 THZ 以上的平均时间是 Trails B 的重要预测指标，F(1, 56)=7.60。
这些结果表明，心率作为身体活动强度的衡量指标，在旨在推断其对认知表现的影响的研究中应密切监测，因为在青春期前儿童中，剧烈活动的参与可能比低强度活动具有特定的益处。
