Physical Activity Monitoring In the LIFE Study Using the Actigraph Accelerometer

使用 Actigraph 加速度计进行生命研究中的体力活动监测

• 批准号: 7592099
• 负责人: Jack M Guralnik
• 金额: $ 10.34万
• 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/7592099
• 关键词: Acceleration; Class; Count; Daily; Data; Documentation; Education; Elderly; Evaluation; Exercise; Hip region structure; Home environment; Hour; Intervention; Life; Measurement; Monitor; Movement; Numbers; Paper; Participant; Persons; Physical activity; Pilot Projects; Preparation; Protocols documentation; Questionnaires; Rate; Research Personnel; Right-On; Specific qualifier value; Time; Treatment Protocols; Walking; base; conditioning; day; healthy aging; lifestyle intervention; meter; solid state; time interval; tool

The major intervention in the LIFE pilot study for participants assigned to the exercise group will be walking. According to the treatment protocol, during the first six months as much as half of their increase in walking will be carried out at home or in a non-supervised setting. During the second six months, at least 75% of the assigned walking will be non-supervised for most participants. To know if this intervention was accomplished, LIFE investigators need documentation that a significant increase in walking took place in the exercise participants versus the healthy aging class participants. Currently the protocol includes the use of pedometers, logs and the CHAMPS questionnaire to inform the investigators about the activity profile of each study participant. While all of these measurement tools are likely to provide useful data, none have been proven to provide an accurate and objective assessment of the daily physical activity profile of older, somewhat frail persons. The Actigraph is a small solid-state accelerometer/recorder (6.6 x 4.3 x 2.5 cm., 70 grams) that can store the number of times it moves x the rate of movement change (acceleration) on a continuous basis for up to a month (approximate battery life). It stores these counts for specified times intervals, usually set at one-minute. For LIFE, this monitor will be worn on the right hip of each participant. The trial is now complete and actigraph data are being cleaned and analyzed. A paper on the results is in preparation.

分配给运动小组的参与者的生活试点研究的主要干预将是行走。 根据治疗方案，在最初的六个月中，他们的步行增加的一半将在家中或在非监督的环境中进行。在第二个六个月中，对于大多数参与者来说，至少有75％的步行者将无监督。 要知道是否完成了这种干预措施，生命调查人员需要文档，即运动参与者与健康衰老班参与者的步行大幅增加。目前，该协议包括使用计步器，日志和Champs问卷，以告知调查人员每个研究参与者的活动概况。尽管所有这些测量工具都可能提供有用的数据，但没有证明没有证明对较老的，有些脆弱的人的日常体育锻炼概况进行准确和客观的评估。 Actigraph是一个小的固态加速度计/记录器（6.6 x 4.3 x 2.5厘米，70克），可以在连续的基础上存储x移动速率（加速度）的次数，最多一个月（大约电池寿命）。它以指定时间间隔存储这些计数，通常设置为一分钟。 终身，该监视器将戴在每个参与者的右臀部上。 该试验现在已经完成，并且正在清洁和分析Actraph数据。 有关结果的论文正在准备。