There is scarcity of studies using device‐based measures to examine how relationship and parenthood transitions modify 24‐h movement behaviors. This study examined how the composition of 24‐h movement behaviors changes during these life transitions. Young adults (n = 170, mean age 25.6 years, SD 0.6) from the Special Turku Coronary Risk Factor Intervention Project (STRIP) wore wrist‐worn accelerometers for 1 week and completed questionnaire at ages 26 and 31 years. Participants were categorized by relationship status into single (16%), those transitioning from single to partnered (31%), partnered (47%), and separated (7%), and by parenthood status into non‐parents (73%), new parents (19%), and parents (8%). Changes in daily movement behaviors, including sleep, sedentary behavior (SED), light physical activity (LPA), and moderate‐to‐vigorous physical activity (MVPA), were examined using compositional linear mixed models. In general, LPA and MVPA decreased relative to sleep and SED (p = 0.007). Differences emerged between LPA and MVPA in relationship and parenthood groups (p for group × time interaction 0.008 and 0.001). Those transitioning to partnership decreased MVPA by 17 min/day, while partnered and separated individuals showed no notable MVPA change but decreased LPA by 14 and 43 min/day. Single individuals and non‐parents decreased LPA and MVPA in similar proportions. New parents decreased MVPA by 20 min/day, while parents increased it by 19 min/day. Becoming first‐time parent and starting relationship was associated with decline of MVPA. Our results suggest the importance of considering these life transitions and providing guidance for maintaining physical activity despite changes in life situations.

中文翻译：

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关系和父母身份过渡期间 24 小时运动行为的变化：成分数据分析


缺乏使用基于设备的措施来检查关系和父母身份转变如何改变 24 小时运动行为的研究。本研究检查了在这些生活过渡期间 24 小时运动行为的组成如何变化。来自特殊 Turku 冠状动脉危险因素干预项目 （STRIP） 的年轻人 （n = 170，平均年龄 25.6 岁，SD 0.6） 佩戴腕戴式加速度计 1 周，并在 26 岁和 31 岁时完成问卷调查。参与者按关系状态分为单身 （16%）、从单身过渡到伴侣 （31%）、伴侣 （47%） 和分居 （7%），按父母身份分为非父母 （73%）、新父母 （19%） 和父母 （8%）。使用成分线性混合模型检查日常运动行为的变化，包括睡眠、久坐行为 （SED）、轻度体力活动 （LPA） 和中度至剧烈体力活动 （MVPA）。一般来说，LPA 和 MVPA 相对于睡眠和 SED 降低 （p = 0.007）。LPA 和 MVPA 在关系组和父母组之间出现差异 （p 组×时间交互 0.008 和 0.001）。那些过渡到伴侣的人将 MVPA 降低了 17 分钟/天，而伴侣和分居的个体没有表现出明显的 MVPA 变化，但 LPA 降低了 14 和 43 分钟/天。单身个体和非父母降低 LPA 和 MVPA 的比例相似。新父母将 MVPA 降低了 20 分钟/天，而父母将其增加了 19 分钟/天。成为初为人父母并开始关系与 MVPA 的下降有关。我们的结果表明，考虑这些生活转变并为在生活情况发生变化的情况下保持身体活动提供指导的重要性。