Physical activity and maintaining mental and physical health in rotating shift workers

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We examined associations between physical activity or dietary habits and maintaining mental or physical health in rotating shift workers. Physical activity decreased subjective levels of depression, fatigue, and stress. In addition, shift workers had phase-delayed circadian clock during day shift. Higher energy intake at breakfast was associated with phase delay for their diurnal 24-h variation in cardiac autonomic nervous system and decreasing subjective levels of depression, fatigue, and sleepiness. These results might be important when developing guidelines for physical activity or dietary habits to maintain and/or improve physical and mental health for shift workers.