BACKGROUND In March 2020, the Spanish government established an official lockdown across the country in response to the COVID-19 pandemic and confined the population to their homes, restricting their mobility. The objectives of the study are twofold: a) to examine dose-response relationships between physical activity (PA) components (volume, intensity, frequency, duration) and depressive symptoms of the population during confinement, and b) to identify the optimal levels of PA to mitigate notable depressive symptoms (NDS). METHODS 4,811 (2,952 women) Spanish citizens, age range 16-92 years, completed an online questionnaire (snowball sampling) to measure their levels of depressive symptoms, PA, and various anthropometric and sociometric variables. Volume (METs-min/week), frequency (days/week), and duration (hours) were examined using logistic regressions with restricted cubic splines. RESULTS The PA components were inversely associated with NDS. Performing at least 477 METs-min/week was associated with a 33% decrease in probability of NDS, and reaching 3,000 METs-min/week was associated with the lowest risk of NDS (47%). As for frequency, with 10 times/week the probability of NDS was 56% lower. At 10 hours of weekly practice, the probability of NDS was 39% lower. CONCLUSIONS A range and optimal amount of PA is suggested to reduce the appearance of SDN during confinement.

中文翻译：

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由于COVID-19而导致的封闭期间西班牙人口的体育锻炼和抑郁症状的预防。

背景技术2020年3月，西班牙政府为应对COVID-19流行病在全国范围内建立了正式的封锁，并将居民限制在自己的家中，限制了他们的流动性。该研究的目标是双重的：a）检查身体活动（PA）成分（体积，强度，频率，持续时间）与分娩期间人群的抑郁症状之间的剂量反应关系，以及b）识别最佳水平的PA缓解明显的抑郁症状（NDS）。方法4,811名（2,952名女性）年龄在16-92岁之间的西班牙公民完成了在线问卷（雪球采样），以测量其抑郁症状，PA以及各种人体测量学和社会测量学变量的水平。体积（MET-min /周），频率（天/周），和持续时间（小时）使用限制三次样条的logistic回归进行了检验。结果PA成分与NDS呈负相关。每周至少进行477 METs-min可使NDS发生概率降低33％，而每周达到3,000 METs-min则NDS发生风险最低（47％）。至于频率，每周10次NDS的可能性降低了56％。在每周练习10个小时后，NDS的可能性降低了39％。结论建议使用一定范围和最佳的PA量，以减少SDN在分娩过程中的出现。每周000 METs-min的NDS风险最低（47％）。至于频率，每周10次NDS的可能性降低了56％。在每周练习10个小时后，NDS的可能性降低了39％。结论建议使用一定范围和最佳的PA量，以减少SDN在分娩过程中的出现。每周000 METs-min的NDS风险最低（47％）。至于频率，每周10次NDS的可能性降低了56％。在每周练习10个小时后，NDS的可能性降低了39％。结论建议使用一定范围和最佳的PA量，以减少SDN在分娩过程中的出现。