Waaso Peyton, Gofton Natalie, Zuhl Micah
School of Health Sciences, Central Michigan University, Mount Pleasant, MI 48706, USA.
Behav Sci (Basel). 2022 Jul 10;12(7):224. doi: 10.3390/bs12070224.
Self-selected workloads are shown to be more enjoyable than researcher-selected workloads. In addition, it is unclear if sedentary adults find aerobic interval or continuous exercise more pleasant. Therefore, the primary purpose of this study was to determine the effects of two acute bouts (interval vs. continuous) of self-selected moderate-intensity treadmill exercises on perceived enjoyment and self-efficacy towards exercise in a sedentary cohort. Sixteen sedentary adults completed two 30 min bouts of moderate-intensity treadmill activity, one interval and one continuous. Participants blindly (could not see speed, grade, and heart rate) selected their own treadmill workload with guidance from the Borg RPE 6-20 scale. Post-exercise self-efficacy and perceived enjoyment were assessed using the Self-Efficacy for Exercise Scale and the Physical Activity Enjoyment Scale, respectively. Exercise workloads using treadmill speed and grade and exercise heart rate were compared between trials. No significant differences were found between conditions for self-selected workloads ( = 0.62), self-efficacy ( = 0.58), perceived enjoyment ( = 0.41), and heart rate ( = 0.12). Sedentary individuals reported no difference in self-efficacy or perceived exercise enjoyment. Participants were, however, adequate in self-selecting their own intensities with RPE guidance as there were no differences in the workloads across conditions. These results suggest that when able to self-select moderate-intensity exercise workloads, sedentary individuals equally enjoy both interval and continuous exercise.
研究表明，自主选择的工作量比研究人员指定的工作量更令人愉快。此外，尚不清楚久坐不动的成年人觉得有氧间歇运动还是持续运动更令人愉悦。因此，本研究的主要目的是确定两组自主选择的中等强度跑步机急性运动（间歇运动与持续运动）对久坐人群运动时的愉悦感和自我效能感的影响。16名久坐不动的成年人完成了两组30分钟的中等强度跑步机运动，一组是间歇运动，一组是持续运动。参与者在Borg自感用力度6 - 20量表的指导下盲目（看不到速度、坡度和心率）选择自己的跑步机工作量。运动后分别使用运动自我效能量表和身体活动愉悦感量表评估自我效能感和愉悦感。比较两次试验中使用跑步机速度、坡度和运动心率的运动工作量。在自主选择的工作量（P = 0.62）、自我效能感（P = 0.58）、愉悦感（P = 0.41）和心率（P = 0.12）方面，各条件之间未发现显著差异。久坐不动的个体在自我效能感或运动愉悦感方面没有差异。然而，参与者在自感用力度的指导下能够充分自主选择自己的运动强度，因为各条件下的工作量没有差异。这些结果表明，当能够自主选择中等强度的运动工作量时，久坐不动的个体对间歇运动和持续运动的喜爱程度相同。
