Clarke Kristine K, Freeland-Graves Jeanne, Klohe-Lehman Deborah M, Milani Tracey J, Nuss Henry J, Laffrey Shirley
Division of Nutrition, The University of Utah, Salt Lake City, Utah, USA.
J Am Diet Assoc. 2007 Jun;107(6):962-7. doi: 10.1016/j.jada.2007.03.010.
This study tested the effectiveness of a pedometer program for increasing physical activity levels and reducing body weight in overweight and obese mothers of young children.
Participants' motivational readiness to exercise, exercise self-efficacy, pedometer steps, pedometer kilocalories, and anthropometrics were evaluated at week 0 and week 8; anthropometrics were reassessed at week 24. Healthful-weight mothers provided comparison data at baseline.
SUBJECTS/SETTING: A convenience sample of 93 intervention women (body mass index [calculated as kg/m(2)] >or=25) and 31 comparison women (body mass index <25) were recruited from public health clinics, community centers, and churches. Eligibility criteria included Hispanic, African-American, or white ethnicity and low income (<200% of the federal poverty index).
An 8-week physical activity and dietary program was conducted.
Motivational readiness to exercise, exercise self-efficacy, pedometer steps, and weight loss.
Independent sample t tests, chi(2) tests, paired t tests, Wilcoxon signed-ranks tests, repeated measures analysis of variance, and Pearson and Spearman correlations.
Mothers enhanced their motivational readiness to exercise, exercise self-efficacy, pedometer steps, and pedometer kilocalories. Reductions in body weight, percent body fat, and waist circumference also were observed. Significant correlations were found between exercise self-efficacy and exercise readiness (r=0.28, P<0.01), pedometer steps (r=0.30, P<0.01), and pedometer kilocalories (r=0.28, P<0.05).
This intervention successfully increased the physical activity levels and promoted weight loss in low-income mothers. Public health clinics may wish to incorporate elements of this intervention into their programs to improve the physical fitness of recipients.
本研究旨在测试计步器计划对增加幼儿超重和肥胖母亲的身体活动水平及减轻体重的有效性。
在第0周和第8周对参与者的运动动机准备度、运动自我效能、计步器步数、计步器千卡数和人体测量学指标进行评估；在第24周重新评估人体测量学指标。健康体重的母亲在基线时提供对照数据。
研究对象/地点：从公共卫生诊所、社区中心和教堂招募了93名干预组女性（体重指数[以千克/平方米计算]≥25）和31名对照组女性（体重指数<25）作为便利样本。入选标准包括西班牙裔、非裔美国人或白人种族以及低收入（低于联邦贫困指数的200%）。
实施为期8周的身体活动和饮食计划。
运动动机准备度、运动自我效能、计步器步数和体重减轻情况。
独立样本t检验、卡方检验、配对t检验、Wilcoxon符号秩检验、重复测量方差分析以及Pearson和Spearman相关性分析。
母亲们提高了运动动机准备度、运动自我效能、计步器步数和计步器千卡数。还观察到体重、体脂百分比和腰围有所降低。运动自我效能与运动准备度（r = 0.28，P < 0.01）、计步器步数（r = 0.30，P < 0.01）和计步器千卡数（r = 0.28，P < 0.05）之间存在显著相关性。
该干预措施成功提高了低收入母亲的身体活动水平并促进了体重减轻。公共卫生诊所不妨将此干预措施的要素纳入其项目中，以改善接受者的身体素质。
