The present study aimed to advance insight in the role of leisure time physical activity (LTPA) in the recovery process, by focusing on the strenuousness of LTPA. It was proposed that-compared with less strenuous LTPA-more strenuous LTPA would show stronger positive relationships with recovery through higher levels of mental disengagement from stressors resulting from more strenuous LTPA. This hypothesis was examined in two studies, in which participants' positive and negative affective states were included as indicators of recovery. Study 1 was a 10-day daily diary study (3 measurements daily) among 74 employees. Each day, participants reported the time they had spent on mild, moderate, and strenuous LTPA. Multilevel path analysis showed that only strenuous LTPA was related to beneficial changes in the two indicators of recovery before bedtime and in the next morning through its positive relationship with psychological detachment from work. Study 2 was an experiment with two between-participants conditions, in which-after a stress-inducing task-44 participants engaged in either (a) a 20-min moderate intensity cycling task, or (b) a 20-min high intensity cycling task. Results showed that high intensity exercise was indirectly related to higher recovery as indicated by a lower level of participants' negative affective state, through lower levels of rumination about the stress-inducing task in this condition. The results of these two studies indicate that to fully savor LTPA's beneficial effects through mental disengagement from stressors, it is best conducted with a high level of strenuousness. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

中文翻译：

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一分耕耘一分收获？身体活动的恢复和剧烈。

本研究旨在通过重点研究LTPA的剧烈程度，来提高对休闲时间体育活动（LTPA）在恢复过程中的作用的认识。有人提出，与较低强度的LTPA相比，较高强度的LTPA通过较高水平的LTPA导致的压力源使精神脱离程度更高，从而显示出与康复的更强正相关关系。在两项研究中检验了这一假设，其中将参与者的积极和消极情感状态作为恢复的指标。研究1是一项针对74名员工的为期10天的每日日记研究（每天进行3次测量）。每天，参与者报告他们花费在轻度，中度和剧烈LTPA上的时间。多级路径分析表明，只有剧烈的LTPA与就寝前和第二天早晨的两个恢复指标的有益变化有关，因为它与工作中的心理疏离呈正相关。研究2是在两个参与者之间的情况下进行的实验，在此过程中，在进行压力诱导任务后，有44位参与者参与了（a）20分钟的中等强度自行车运动或（b）20分钟的高强度自行车运动任务。结果表明，高强度运动与较高的恢复能力间接相关，这是通过降低参与者在这种情况下对压力诱导任务的反省程度来降低的负面情感状态。这两项研究的结果表明，要通过与压力源的精神隔离来充分享受LTPA的有益影响，最好在高强度下进行。（PsycINFO数据库记录（c）2018 APA，保留所有权利）。