Women in midlife (ages 40–60) show decreases in physical activity (PA) that exacerbate risk for cardiovascular disease. Social comparisons (i.e., self-evaluations relative to others) are known to influence PA in other groups, but their association in this population is unknown. The present study used ecological momentary assessment to examine this relation among women in midlife with hypertension or another CVD risk condition (N = 75, M_BMI = 34.0 kg/m²). Participants completed 5 surveys per day and wore tri-axial accelerometers for 10 days. PA engagement was lower after women reported more comparisons than were typical for them (7–14% reductions in PA for each additional comparison). These relations varied across days of observation and relations were positive on 34–58% of days. Findings call for careful consideration of how best to harness any potential benefits of social comparison for promoting PA in this and other groups.

中年女性（40-60 岁）的体力活动（PA）减少，这加剧了心血管疾病的风险。众所周知，社会比较（即相对于他人的自我评估）会影响其他群体的 PA，但它们在该人群中的关联尚不清楚。本研究使用生态瞬时评估来检查患有高血压或其他 CVD 风险状况的中年女性之间的这种关系（N  = 75，M _BMI  = 34.0 kg/m ²）。参与者每天完成 5 次调查，并佩戴三轴加速度计 10 天。在女性报告的比较多于她们的典型情况后，PA 参与度较低（每次额外比较，PA 减少 7-14%）。这些关系在观察天数中有所不同，并且在 34-58% 的天数中关系是积极的。调查结果要求仔细考虑如何最好地利用社会比较的任何潜在好处来促进这个群体和其他群体的 PA。