Schneider Margaret, Schmalbach Priel
Dept of Planning Policy and Design, University of California at Irvine, Irvine, CA.
J Phys Act Health. 2015 Apr;12(4):546-52. doi: 10.1123/jpah.2013-0442. Epub 2014 Apr 17.
Little information exists as to the exercise intensity that adolescents enjoy and whether identifiable subgroups of adolescents will choose higher-intensity exercise.
Healthy adolescents (N = 74; mean age = 11.09 years) completed a cardiorespiratory fitness test, a moderate-intensity exercise task, and an exercise task at an intensity that felt "good." Heart rate (HR), work rate (WR), and ratings of perceived exertion (RPE) were assessed every 3 minutes.
During the "feels good" task, adolescents exercised at a HR recognized as beneficial for cardiovascular health (mean HR = 66% to 72% of HR at VO2peak). Adolescents who experienced a positive affective shift during the moderate-intensity task engaged in higher-intensity exercise during the feels-good task as compared with those whose affective response to moderate-intensity exercise was neutral or negative (76% of peak HR vs. 70% of peak HR, P < .01).There was no difference between groups in RPE.
Adolescents tend to select an exercise intensity associated with fitness benefits when afforded the opportunity to choose an intensity that feels good. An identified subgroup engaged in higher-intensity exercise without a commensurate perception of working harder. Encouraging adolescents to exercise at an intensity that feels good may increase future exercise without sacrificing fitness.
关于青少年喜欢的运动强度以及是否存在可识别的青少年亚组会选择更高强度运动的信息很少。
健康青少年（N = 74；平均年龄 = 11.09岁）完成了心肺适能测试、中等强度运动任务以及一项感觉“良好”强度的运动任务。每3分钟评估心率（HR）、工作率（WR）和自觉用力程度（RPE）。
在“感觉良好”任务期间，青少年运动时的心率被认为对心血管健康有益（平均心率 = 最大摄氧量时心率的66%至72%）。与那些对中等强度运动的情感反应为中性或负面的青少年相比，在中等强度任务期间经历积极情感变化的青少年在感觉良好任务期间进行的运动强度更高（峰值心率的76%对峰值心率的70%，P <.01）。两组之间的RPE没有差异。
当有机会选择感觉良好的运动强度时，青少年倾向于选择与健康益处相关的运动强度。一个已识别的亚组进行了更高强度的运动，但没有相应地感觉更费力。鼓励青少年以感觉良好的强度进行运动可能会增加未来的运动量而不牺牲健康。
