背景:不良的情绪状态是最常见的心理健康,给全球公共卫生造成了相当大的负担。久坐行为是影响情绪状态的重要因素,然而,以前减少中国年轻人久坐时间的措施仅集中在增加体育锻炼(PA)。久坐,PA,从时间使用的角度来看,睡眠构成了一个人的一天。不知道在流行病期间将久坐时间重新分配给不同类型的PA(例如,每日PA和结构化PA)或睡眠是否对情绪状态有影响。因此,这项研究旨在研究大流行期间用不同类型的PA或睡眠替代久坐时间与中国年轻人的情绪状态之间的关联,并进一步研究这种关联是否因睡眠人群和替代时间单位而异.
方法:2020年2月23日至29日,邀请3,579名18至25岁居住在中国并在COVID-19爆发期间在家自我隔离的年轻成年人完成在线问卷调查。受试者\'PA,久坐的时间,并使用国际体育锻炼问卷和中文版的情绪状态概况评估情绪状态,分别。参与者还报告了睡眠时间和一些社会人口统计学特征。参与者分为短睡眠者(<7h/d),正常睡眠(7-9h/d),和长睡眠者(>9小时/天),基于他们报告的睡眠持续时间。采用Pearson相关分析和等时替代模型(ISM)对相关数据进行分析。
结果:在大流行期间,久坐时间与中国年轻人的情绪状态呈负相关(r=0.140),在短睡眠者中相关性最强(r=0.203)。用结构化PA代替久坐时间与良好的情绪状态相关(β=-0.28,95%CI:-0.49,-0.08)。此外,用每日PA(例如职业PA,家庭PA)也与正常睡眠者的良好情绪状态相关(β=-0.24,95%CI:-0.46,-0.02)。久坐时间替代睡眠可带来情绪益处(β=-0.35,95%CI:-0.47,-0.23)。这种好处在短睡眠者中尤为突出。此外,对于长时间睡眠的人来说,用睡眠时间代替久坐时间也能显著改善情绪(β=-0.41,95%CI:-0.69,-0.12)。用不同类型的PA或睡眠代替久坐行为的持续时间越长,情绪益处越大。
结论:将每天10分钟的久坐时间重新分配给不同类型的PA或睡眠对年轻人的情绪状态有益。重新分配的时间越长,利益越大。我们的结果证明了一种可行和实用的行为选择,可以改善中国年轻人的情绪状态。
BACKGROUND: Poor mood states pose the most frequent mental health, creating a considerable burden to global public health. Sedentary behavior is an essential factor affecting mood states, however, previous measures to reduce sedentary time in Chinese young adults have focused only on increasing physical activity (PA). Sedentary, PA, and sleep make up a person\'s day from the standpoint of time use. It is not known whether reallocating sedentary time to different types of PA (e.g. daily PA and structured PA) or sleep during an epidemic has an effect on mood states. Therefore, this study aimed to examine the association between replacing sedentary time with different types of PA or sleep during the pandemic and the mood states of Chinese young adults and to further examine whether this association varies across sleep populations and units of replacement time.
METHODS: 3,579 young adults aged 18 to 25 years living in
China and self-isolating at home during the COVID-19 outbreak were invited to complete an online questionnaire between February from 23 to 29, 2020. Subjects\' PA, sedentary time, and mood states were assessed using the International Physical Activity Questionnaire and the Chinese version of the Profile of Mood States, respectively. Participants also reported sleep duration and some sociodemographic characteristics. Participants were divided into short sleepers (< 7 h/d), normal sleepers (7-9 h/d), and long sleepers (> 9 h/d) based upon their reported sleep duration. Relevant data were analyzed using Pearson correlation analysis and isotemporal substitution model (ISM).
RESULTS: Sedentary time was negatively associated with mood states in Chinese young adults during the pandemic (r = 0.140) and correlated strongest among short sleepers (r = 0.203). Substitution of sedentary time with structured PA was associated with good mood states (β=-0.28, 95% CI: -0.49, -0.08). Additionally, substituting sedentary time with daily PA (e.g. occupational PA, household PA) was also associated with good mood states among normal sleepers (β=-0.24, 95% CI: -0.46, -0.02). The substitution of sedentary time with sleep could bring mood benefits (β=-0.35, 95% CI: -0.47, -0.23). This benefit was particularly prominent among short sleepers. Furthermore, for long sleepers, replacing sedentary time with sleep time also resulted in significant mood benefits (β=-0.41, 95% CI: -0.69, -0.12). The longer the duration of replacing sedentary behavior with different types of PA or sleep, the greater the mood benefits.
CONCLUSIONS: A reallocation of as little as 10 min/day of sedentary time to different types of PA or sleep is beneficial for the mood states of young adults. The longer the reallocation, the greater the benefit. Our results demonstrate a feasible and practical behavior alternative for improving mood states of Chinese young adults.