Ransdell Lynda B, Robertson LeAnn, Ornes Lynne, Moyer-Mileur Laurie
Department of Kinesiology, Boise State University, ID 83725-1710, USA,
Women Health. 2004;40(3):77-94. doi: 10.1300/j013v40n03_06.
A 6-month home-based (HB) physical activity program was compared to a control (CTL) condition in terms of effect on physical activity and health-related fitness in three generations of women (daughter/ mother/maternal grandmother). Volunteers were randomly assigned to a HB or CTL condition. HB participants (n = 28) were asked to participate in lifestyle, aerobic, muscular strength, and flexibility activities at least 3 times per week and they completed 73% of the recommended PA bouts. CTL condition participants (n = 9) were asked to continue their usual pattern of physical activity. Changes in physical activity were measured pre-and post-intervention using the Physical Best questionnaire and pedometer step counts (3-day average). Changes in health-related fitness were assessed using Fitnessgram tests. Group x Time interactions were significant for changes in participation in flexibility activity (d/wk) and steps/day, indicating that the HB group experienced significant positive changes in the expected direction (+305% and +37%, respectively), while the CTL group regressed (-15% and -13%, respectively). The G x T interaction for mile time was significant, although not in the expected direction (CTL group < by 14% and HB group < by 5%). Findings should be interpreted with caution due to several limitations of the study, but several suggestions are made for more effectively studying this topic in the future.
一项为期6个月的居家身体活动计划与对照条件进行了比较，该对照条件涉及三代女性（女儿/母亲/外祖母）的身体活动及健康相关体能的影响。志愿者被随机分配到居家组或对照组。居家组参与者（n = 28）被要求每周至少参加3次生活方式、有氧运动、肌肉力量和柔韧性活动，且他们完成了推荐运动量的73%。对照组参与者（n = 9）被要求继续其惯常的身体活动模式。使用“最佳身体状态”问卷和计步器步数（3天平均值）在干预前后测量身体活动的变化。使用体能测试评估健康相关体能的变化。组×时间交互作用对柔韧性活动参与度（每周天数）和每日步数的变化具有显著意义，表明居家组在预期方向上经历了显著的积极变化（分别为+305%和+37%），而对照组则出现了退步（分别为-15%和-13%）。英里跑时间的组×时间交互作用显著，尽管并非在预期方向上（对照组下降14%，居家组下降5%）。由于该研究存在若干局限性，研究结果应谨慎解读，但为未来更有效地研究该主题提出了一些建议。
