Department of Psychology, Kent State University, Kent, OH 44242, USA.
Health Psychol. 2012 Nov;31(6):754-62. doi: 10.1037/a0028711. Epub 2012 Aug 27.
Reduced physical activity is common in persons with heart failure (HF). However, studies of correlates and modifiers of physical activity in this population rarely employ objective measures. Motivational and mood related factors that may exacerbate inactivity in HF patients are also rarely investigated. In this study, we examined the relationship between physical activity as assessed by accelerometry, and depression in older adults with HF.
At baseline, older adults with HF (N = 96; 69.81 ± 8.79) wore an accelerometer for seven days, and completed a brief fitness assessment, neuropsychological testing, and psychosocial measures including the Beck Depression Inventory-II (BDI-II). Medical and demographic history was obtained through record review and self-report.
Accelerometer measures showed that HF patients averaged 587 minutes of sedentary time and just 0.31 minutes of vigorous activity per day. Lower daily step count was associated with poorer quality of life and reduced cognitive function. A multiple linear regression adjusting for important demographic and medical variables found that greater number of depressive symptoms on the BDI-II independently predicted lower physical activity levels.
Consistent with past work, the current study found that low physical activity is common in older adults with HF. Depression is an independent predictor of physical activity in older adults with HF and reduced physical activity is associated with numerous adverse psychosocial outcomes. Future studies need to determine whether treatment of depression can boost physical activity and thus improve health outcomes in this population.
体力活动减少在心力衰竭（HF）患者中很常见。然而，该人群中体力活动的相关性和调节因素的研究很少采用客观测量。HF 患者中可能导致活动减少的与动机和情绪相关的因素也很少被调查。在这项研究中，我们检查了通过加速度计评估的体力活动与老年 HF 患者抑郁之间的关系。
在基线时，96 名老年 HF 患者（N=96；69.81±8.79）佩戴加速度计 7 天，并完成了简短的体能评估、神经心理学测试和心理社会措施，包括贝克抑郁量表-II（BDI-II）。通过病历回顾和自我报告获得医疗和人口统计学病史。
加速度计测量显示，HF 患者平均每天有 587 分钟的久坐时间，仅有 0.31 分钟的剧烈活动。每日步数减少与生活质量下降和认知功能降低有关。调整重要人口统计学和医学变量的多元线性回归发现，BDI-II 上的抑郁症状越多，独立预测体力活动水平越低。
与过去的工作一致，本研究发现，体力活动减少在老年 HF 患者中很常见。抑郁是老年 HF 患者体力活动的独立预测因素，体力活动减少与许多不良心理社会结局有关。未来的研究需要确定治疗抑郁是否可以增加体力活动，从而改善该人群的健康结局。
