Background

People with schizophrenia often experience poor health, leading to shortened lifespans. The health of people with schizophrenia may be further exacerbated by increased sedentary behavior, which independently predicts health risk in the general population. However, the prevalence and patterns of objectively measured sedentary behavior in schizophrenia have not been studied extensively on a momentary basis.

Methods

Activity of 100 patients with schizophrenia was compared to that of healthy controls (HC; n = 71) using ecological momentary assessment (EMA). EMA provides real-time, real-world monitoring of behavior. We sampled behavior seven times per day for seven days, quantifying active versus inactive behaviors and four different movement patterns (recumbent, seated, standing, and moving). Due to different employment rates between samples, we focused on surveys completed at home.

Results

Four of the five most commonly reported activities for participants with schizophrenia involved sitting or lying down. When considering activity during the last hour, participants with schizophrenia were more likely to be sitting or pacing and less likely to be standing than HC. If participants with schizophrenia only did one thing in the last hour, it was more likely to involve sitting and less likely to involve standing compared to HC.

Discussion

People with schizophrenia were significantly more likely to be seated and less likely to be standing or active during the past hour than HC, despite high frequencies of seated behaviors in the HC as well. The adverse health consequences of sitting for extended periods may be especially relevant for people with schizophrenia and likely contribute to premature mortality in this population.

中文翻译：

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精神分裂症患者和对照组的真实世界久坐行为和活动水平：一项生态瞬时评估研究

背景

精神分裂症患者通常身体状况不佳，导致寿命缩短。久坐行为的增加可能会进一步加剧精神分裂症患者的健康状况，这独立地预测了普通人群的健康风险。然而，在精神分裂症中客观测量的久坐行为的患病率和模式尚未得到广泛的研究。

方法

使用生态瞬时评估 (EMA) 将 100 名精神分裂症患者的活动与健康对照 (HC; n = 71) 的活动进行比较。EMA 提供实时、真实的行为监控。我们每天对行为进行 7 次采样，持续 7 天，量化主动与非主动行为以及四种不同的运动模式（卧式、坐式、站立和移动）。由于样本之间的就业率不同，我们专注于在家完成的调查。

结果

精神分裂症参与者最常报告的五项活动中有四项涉及坐着或躺下。在考虑最后一小时的活动时，与 HC 相比，精神分裂症参与者更有可能坐着或踱步，而不太可能站着。如果精神分裂症参与者在最后一个小时内只做一件事，与 HC 相比，它更有可能涉及坐着，不太可能涉及站立。

讨论

与 HC 相比，与 HC 相比，精神分裂症患者在过去一小时内坐着的可能性更高，站立或活动的可能性更低，尽管 HC 中的坐着行为也很频繁。久坐对健康的不利后果可能与精神分裂症患者特别相关，并可能导致该人群过早死亡。