Department of Preventive Medicine, Pennington Biomedical Research Center, Baton Rouge, LA, USA.
Am J Prev Med. 2012 Dec;43(6):629-35. doi: 10.1016/j.amepre.2012.08.024.
Exercise training reduces adiposity and risk of cardiovascular disease. However, the combined effects of habitual free-living physical activity and aerobic training on waist circumference, weight, fitness, and blood pressure in postmenopausal women are unknown.
To evaluate the effects of habitual physical activity levels during aerobic training on weight, waist circumference, fitness, and blood pressure.
Secondary analysis of an RCT. Original data collected April 2001 to June 2005 and analyzed in 2012.
SETTING/PARTICIPANTS: Postmenopausal women in a supervised exercise trial.
Women (n=325) were randomized to 4, 8, or 12 kcal/kg per week of aerobic training or a control group for 6 months. All outcome measures were collected at baseline and follow-up. Changes in dependent variables within each training group were evaluated across tertiles of pedometer-determined habitual physical activity outside exercise training sessions.
Changes in waist circumference and weight.
Reductions in waist circumference were significantly greater with higher steps/day accumulated outside exercise training compared to lower levels in the 4 (high: -4.8 cm vs low: -1.4 cm, p=0.03); 8 (high: -4.2 cm vs low: -0.4 cm, p=0.03), and 12 kcal/kg per week groups (high: -4.1 cm vs low: -0.7 cm, p=0.05). For all groups, p-trend≤0.03. A trend was observed for greater weight reduction with higher steps/day in the 4 kcal/kg per week group (p-trend=0.04) but not for the other exercise doses. No effects were observed for blood pressure or fitness measures (all p>0.05).
In postmenopausal women, higher habitual physical activity while participating in aerobic training was associated with greater reductions in central adiposity, and was supportive of weight loss compared to lower levels.
运动训练可减少肥胖和心血管疾病风险。然而，习惯性的自由生活体力活动和有氧运动训练对绝经后妇女的腰围、体重、健康和血压的综合影响尚不清楚。
评估有氧运动训练期间习惯性体力活动水平对体重、腰围、健康和血压的影响。
随机对照试验的二次分析。原始数据于 2001 年 4 月至 2005 年 6 月收集，并于 2012 年进行分析。
地点/参与者：监督运动试验中的绝经后妇女。
将女性（n=325）随机分为 4、8 或 12kcal/kg/周的有氧运动训练组或对照组，持续 6 个月。所有结果测量均在基线和随访时收集。在每个训练组内，根据训练外计步器确定的习惯性体力活动的三分位数，评估依赖变量的变化。
腰围和体重的变化。
与较低水平相比，与锻炼训练外积累的较高步数/天相比，腰围减少更为显著，在 4（高：-4.8cm 与低：-1.4cm，p=0.03）、8（高：-4.2cm 与低：-0.4cm，p=0.03）和 12kcal/kg/周组（高：-4.1cm 与低：-0.7cm，p=0.05）。所有组的 p 趋势值均≤0.03。在 4kcal/kg/周组中，随着步数/天的增加，体重减轻的趋势更为明显（p 趋势=0.04），但在其他运动剂量中未观察到这种趋势。血压或健康测量均无影响（所有 p>0.05）。
在绝经后妇女中，参加有氧运动训练时习惯性体力活动水平较高与中心性肥胖减少更相关，与较低水平相比，更有助于减肥。
