Study Of Physical Activities In The Blsa

BLSA 体育活动研究

• 批准号: 6969312
• 负责人: Earl Jeffrey Metter
• 金额: --
• 依托单位: NATIONAL INSTITUTE ON AGING
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/6969312
• 关键词: aging; body physical activity; cardiovascular function; epidemiology; exercise; gait; gender difference; health education; human subject; human therapy evaluation; leisure; longitudinal human study; measurement; military personnel; osteoarthritis; patient oriented research; physical fitness; questionnaires

Over the past several years, we have studied self reported levels of physical activity in the Baltimore Longitudinal Study of Aging subjects. Increasing age is associated with a decline in physical activity, cardiovascular fitness, muscle strength, and muscle mass. These changes contribute to sarcopenia and frailty in the elderly. We have been interested in how changing physical activity impacts on these other activity related processes. In the last year, we have reported on the activity questionnaire administered to subjects in the Baltimore Longitudinal Study of Aging over 4 decades. The 97 activities were divided into three categories based on published levels of intensity in MET units: low level activity (<4 METS), moderate level activity (4-6 METS), and high level activity (>6 METS). We examined secular trends in leisure time physical activities (LTPA) in 1359 men from who were evaluated one or more times over the period from 1958 to 1998 and 840 women from 1978 to 1998. Evaluations of LTPA were averaged for each decade. The prevalence of a sedentary lifestyle in each decade was assessed based on compliance with widely publicized recommendations for participation in physical activity. All analyses were adjusted for age, education and race differences across decades. Median high intensity LTPA, defined as activities >6 METS, increased from 30 to 80 MET-minutes/day from the 1960's to the 1990's for men (p<0.01) but did not change between the 1970's and the 199'?s in women. Moderate intensity LTPA, defined as 4-5.9 METS, did not change significantly over these periods in either sex. The percentage of sedentary men, defined as those performing < 40 MET-minutes/day of high intensity LTPA, declined across the four decades whereas for women it did not change significantly. For those over 60 years old, time trends in high intensity LTPA resembled those for the overall sample. In contrast, smoking rates declined from 35% to <10% in men and from 24% to 5% in women over these periods. In this health conscious sample across a broad age range, national recommendations appear to have made modest progress in decreasing the proportion of sedentary adults. How to increase participation in physical activity has become a major health issue. The answer will lie in offering a variety of programs that allow for individualization. We reported an intervention that explored an alternative approach to increase activity in patients with osteoarthritis of the knee. In a pilot study, two groups of subjects were evaluated. The first participated in an educational program while the second had the educational program and in addition were supplied with a pedometer to assess their daily activities. The use of the pedometer was associated with an increase in the amount and speed of walking done by these patients. At present, a project is underway where we are using the same strategy and applying it to military reservist who do not meet fitness requirements for a 2 mile run. The goal is to increase their overall activity levels by making them more aware of what they are actually performing, and to set reasonable goals to increase activity during the course of their busy schedules.

在过去的几年里，我们研究了巴尔的摩老年受试者纵向研究中自我报告的体力活动水平。年龄的增长与身体活动、心血管健康、肌肉力量和肌肉质量的下降有关。这些变化导致了老年人的骨质疏松症和虚弱。我们一直感兴趣的是，体力活动的变化如何影响这些其他与活动相关的过程。在过去的一年里，我们报道了在巴尔的摩老龄化40年纵向研究中对受试者进行的活动问卷调查。97项活动根据公布的MET单位强度分为三类：低水平活动(4个MET)、中等水平活动(4-6个MET)和高水平活动(&gt；6个MET)。我们研究了1359名男性和840名女性在1958至1998年间接受一次或多次评估的闲暇时间体力活动(LTPA)的长期趋势。对LTPA的评估平均为每十年一次。每十年久坐不动的生活方式的流行程度是根据广泛宣传的参加体力活动的建议的遵守情况进行评估的。所有的分析都根据几十年来的年龄、教育和种族差异进行了调整。从1960年的S到1990年的S，男性的中高强度LTPA从30分钟/天增加到80分钟/天(P&lt；0.01)，但在1970年的S和199‘？S之间没有变化。中等强度的LTPA，定义为4-5.9Met，在这两个时期内，无论性别，都没有显著变化。久坐的男性的百分比，即那些每天进行40分钟高强度LTPA的人，在过去的40年里下降了，而女性的比例没有显著变化。对于60岁以上的人，高强度LTPA的时间趋势与总体样本的时间趋势相似。相比之下，男性的吸烟率从35%下降到10%，女性的吸烟率从24%下降到5%。在这一广泛年龄范围内具有健康意识的样本中，国家建议似乎在减少成年人久坐的比例方面取得了适度进展。 如何增加体育活动的参与度已成为一个重大的健康问题。答案将在于提供各种允许个性化的课程。我们报道了一种干预方法，探索了一种替代方法来增加膝骨性关节炎患者的活动量。在一项初步研究中，对两组受试者进行了评估。第一个人参加了教育计划，第二个人参加了教育计划，此外还提供了计步器来评估他们的日常活动。计步器的使用与这些患者步行的数量和速度的增加有关。目前，一个项目正在进行中，我们正在使用相同的策略，并将其应用于不符合2英里长跑健康要求的预备役军人。目标是通过让他们更清楚自己实际在做什么来提高他们的整体活动水平，并设定合理的目标，在繁忙的日程安排中增加活动。