Fielding Roger A, Katula Jeffrey, Miller Michael E, Abbott-Pillola Kari, Jordan Alexander, Glynn Nancy W, Goodpaster Brett, Walkup Michael P, King Abby C, Rejeski W Jack
Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111, USA.
Med Sci Sports Exerc. 2007 Nov;39(11):1997-2004. doi: 10.1249/mss.0b013e318145348d.
Lifestyle Interventions and Independence for Elders Pilot (LIFE-P) was a trial to examine the effects of a physical activity intervention (PA) compared with a health education control (SA) on measures of disability risk in sedentary older adults (N = 424). We examined adherence to the LIFE-P PA intervention for the first 12 months of the trial.
The PA intervention consisted of walking, strength, flexibility, and balance training supplemented with behavioral skills training modules, and it used a phased, center-based schedule of adoption (3x wk(-1), weeks 1-8), transition (2x wk(-1), weeks 9-24), and maintenance (1x wk(-1), weeks 25 to end of trial) while transitioning to primarily home-based physical activity. SA consisted of weekly (weeks 1-26) transitioning to monthly health education workshops.
Participation in moderate-intensity physical activity increased from baseline to months 6 and 12 in PA compared with SA (P < 0.001). At 12 months, PA participants who reported > or = 150 min x wk(-1) of moderate activity demonstrated a significantly greater improvement in their Short Physical Performance Battery score compared with participants who reported < 150 min.wk of moderate activity (P < 0.017). For the PA arm, center-based attendance was 76.3 +/- 24.5, 65.4 +/- 28.6, and 49.8 +/- 35.8% in the adoption, transition, and maintenance phases, respectively.
Adherence to physical activity in LIFE-P was associated with greater improvement in SPPB score and was consistent with adherence in physical activity trials of shorter duration in this subgroup of older adults. Older individuals at risk for disability can adhere to a regular program of physical activity in a long-term randomized trial.
老年人生活方式干预与独立能力试点研究（LIFE-P）是一项试验，旨在研究体力活动干预（PA）与健康教育对照（SA）对久坐不动的老年人（N = 424）残疾风险指标的影响。我们考察了试验前12个月对LIFE-P体力活动干预的依从性。
PA干预包括步行、力量、柔韧性和平衡训练，并辅以行为技能训练模块，采用分阶段、以中心为基础的实施计划（第1 - 8周，每周3次）、过渡阶段（第9 - 24周，每周2次）和维持阶段（第25周直至试验结束，每周1次），同时逐渐过渡到主要以家庭为基础的体力活动。SA包括每周（第1 - 26周）过渡到每月一次的健康教育工作坊。
与SA相比，PA组中度强度体力活动的参与度从基线到第6个月和第12个月有所增加（P < 0.001）。在12个月时，报告中度活动≥150分钟/周的PA参与者与报告中度活动<150分钟/周的参与者相比，其简短体能测试电池得分有显著更大的改善（P < 0.017）。对于PA组，在采用、过渡和维持阶段，以中心为基础的参与率分别为76.3±24.5%、65.4±28.6%和49.8±35.8%。
LIFE-P中体力活动的依从性与SPPB得分的更大改善相关，并且与该老年亚组中持续时间较短的体力活动试验中的依从性一致。有残疾风险的老年人能够在长期随机试验中坚持定期的体力活动计划。
