Associations of changes in exercise level with subsequent disability among seniors: A 16-year longitudinal study
Associations of changes in exercise level with subsequent disability among seniors: A 16-year longitudinal study
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DOI：
10.1093/gerona/61.1.97
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发表时间：
2006-01-01
影响因子：
5.1
通讯作者：
Fries, JF
中科院分区：
文献类型：
--
作者：
Berk, DR;Hubert, HB;Fries, JF
背景。体育锻炼的改变对老年人肌肉骨骼残疾进展的影响很少被研究。从1984年到2000年，我们每年使用健康评估问卷残疾指数（HAQ-DI）对一个前瞻性队列进行研究。该队列包括549名参与者，73%为男性，研究结束时的平均年龄为74岁。在基线和研究结束时，参与者被划分为“高”或“低”强度锻炼者，使用60分钟/周的临界值。分成四组：“久坐”组（低->低；N = 71）、“运动增加”组（低->高；N = 27）、“运动减少”组（高->低；N = 73）和“锻练”组（高->高；N = 378）。主要因变量为1984 - 2000年HAQ-DI评分（0-3分）的变化。使用协方差分析进行多变量统计调整，包括年龄、性别、三个危险因素的变化、体重指数、吸烟状况和合并症的数量。参与者还前瞻性地提供了改变运动习惯的原因。在基线，久坐者和运动增加者平均很少运动（16和22运动分钟/周），而运动者和运动减少者平均运动超过10倍（285和212运动分钟/周）
Background. The effect of changes in physical exercise on progression of musculoskeletal disability in seniors has rarely been studied.Methods. We studied a prospective cohort annually from 1984 to 2000 using the Health Assessment Questionnaire Disability Index (HAQ-DI). The cohort included 549 participants, 73% men, with average end-of-study age of 74 years. At baseline and at the end of the study, participants were classified as "High" or "Low" vigorous exercisers using a cut-point of 60 min/wk. Four groups were formed: "Sedentary" (Low -> Low; N = 71), "Exercise Increasers" (Low -> High; N = 27), "Exercise Decreasers" (High -> Low; N = 73), and "Exercisers" (High -> High; N = 378). The primary dependent variable was change in HAQ-DI score (scored 0-3) from 1984 to 2000. Multivariate statistical adjustments using analysis of covariance included age, gender, and changes in three risk factors, body mass index, smoking status, and number of comorbid conditions. Participants also prospectively provided reasons for exercise changes.Results. At baseline, Sedentary and Increasers averaged little exercise (16 and 22 exercise min/wk), whereas Exercisers and Decreasers averaged over 10 times more (285 and 212 exercise min/wk; p