Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina, USA.
Department of Biostatistics and Data Science, Wake Forest School of Medicine, Wake Forest University, Winston-Salem, North Carolina, USA.
Obesity (Silver Spring). 2022 Jan;30(1):85-95. doi: 10.1002/oby.23318.
This study aimed to determine the impact of dietary weight loss (WL) plus aerobic exercise (EX) and a "move more, more often" approach to activity promotion (SitLess; SL) on WL and maintenance.
Low-active older adults (age 65-86 years) with obesity were randomized to WL+EX, WL+SL, or WL+EX+SL. Participants received a social-cognitive group-mediated behavioral WL program for 6 months, followed by a 12-month maintenance period. EX participants received guided walking exercise with the goal of walking 150 min/wk. SL attempted to achieve a step goal by moving frequently during the day. The primary outcome was body weight at 18 months, with secondary outcomes including weight regain from 6 to 18 months and objectively assessed physical activity and sedentary behavior at each time point.
All groups demonstrated significant WL over 6 months (p < 0.001), with no group differences. Groups that received SL improved total activity time (p ≤ 0.05), and those who received EX improved moderate-to-vigorous activity time (p = 0.003). Over the 12-month follow-up period, those who received WL+EX demonstrated greater weight regain (5.2 kg; 95% CI: 3.5-6.9) relative to WL+SL (2.4 kg; 95% CI: 0.8-4.0).
Pairing dietary WL with a recommendation to accumulate physical activity contributed to similar WL and less weight regain compared with traditional aerobic exercise.
本研究旨在确定饮食减肥（WL）加有氧运动（EX）和“多动、多活动”促进活动（SitLess；SL）方法对 WL 和维持的影响。
低活跃的老年肥胖者（65-86 岁）被随机分配到 WL+EX、WL+SL 或 WL+EX+SL 组。参与者接受为期 6 个月的社会认知小组介导的行为 WL 计划，随后进行 12 个月的维持期。EX 参与者接受指导步行运动，目标是每周步行 150 分钟。SL 试图通过白天频繁活动来达到步数目标。主要结果是 18 个月时的体重，次要结果包括 6 至 18 个月时的体重恢复情况以及每个时间点的客观评估的身体活动和久坐行为。
所有组在 6 个月内均表现出显著的 WL（p < 0.001），但无组间差异。接受 SL 的组总活动时间增加（p ≤ 0.05），接受 EX 的组中度至剧烈活动时间增加（p = 0.003）。在 12 个月的随访期间，接受 WL+EX 的组体重恢复更多（5.2 公斤；95%CI：3.5-6.9），而接受 WL+SL 的组体重恢复较少（2.4 公斤；95%CI：0.8-4.0）。
与传统的有氧运动相比，将饮食 WL 与积累体力活动的建议相结合有助于实现相似的 WL 和更少的体重恢复。
