每日活动水平,姿势分布,步行模式和BCS70队列中的节奏之间的关系.
Craig Speirs1,2, Matthew Ahmadi3,4, Mark Hamer5
1PAL Technologies Ltd., Glasgow G4 0TQ, UK.
Sensors (Basel, Switzerland)
|January 8, 2025
概括
每天的体力活动水平显著影响着姿势和步行行为. 较高的活动 (10,000-15,000步) 需要平衡躺,坐和直立姿势的时间,户外步行更有贡献.
科学领域:
- 身体活动流行病学
- 生物机械分析 生物机械分析
- 公共卫生 公共卫生
背景情况:
- 了解日常活动水平如何影响姿势和步行模式对于有针对性的健康干预至关重要.
- 以前的研究往往将活动广泛分类,缺乏对姿势和步行行为组成的详细分析.
- 对身体活动和姿势的客观测量对于准确的评估至关重要.
研究的目的:
- 研究逐步定义的日常活动量与在各种姿势中度过的时间之间的关系.
- 分析跨越不同活动水平的步行行为模式和强度.
- 为了区分室内,社区和娱乐的贡献,步入整体日常活动.
主要方法:
- 利用腿部安装的三轴加速度计在七天内从3547名参与者收集体育活动数据.
- 基于步数的分类日常活动水平.
- 量化了在不同姿势 (躺着,坐着,直立) 中花费的时间,并分析了步行行为 (室内,社区,娱乐) 和节奏.
主要成果:
- 在活动水平 (p <0.05) 之间观察到直立,躺着和静坐姿势所花费的时间有显著差异.
- 活动水平较高的人 (1万-1万5千步) 在躺着,坐着和直立姿势 (大约1万5千步) 中表现出平衡的时间分配. 每个8小时).
- 较低的活动水平主要是由室内步行驱动的,而较高的水平则包含更多的户外和娱乐步行,室内步行呈现较慢的节奏.
结论:
- 身体活动的组成和强度,包括姿势和步行行为,随着日常活动量而有很大变化.
- 这些发现为开发更细致的公共卫生信息和促进体育活动的干预提供了宝贵的见解.
- 区分步行行为 (室内与室外) 和姿势分配,可以更全面地了解身体活动模式.
相关概念视频
01:15Construction of Frequency Distribution
A frequency distribution table can be constructed using the steps given below.
First, make a table with two columns—one with the title of the data that needs to be organized, and the other column for frequency. [Draw a third column for tally marks if needed]. Then, take a look at the items given in the data set and decide if an ungrouped frequency distribution table or a grouped frequency distribution table would be more suitable. If there are large sets of different values, then it is best to...
First, make a table with two columns—one with the title of the data that needs to be organized, and the other column for frequency. [Draw a third column for tally marks if needed]. Then, take a look at the items given in the data set and decide if an ungrouped frequency distribution table or a grouped frequency distribution table would be more suitable. If there are large sets of different values, then it is best to...
00:51What is a Frequency Distribution
A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the sample. It is commonly used to group data of quantitative types. Frequency distributions can be displayed in a table, histogram, line graph, dot plot, or pie chart, just to name a few. A histogram is a graphical representation of tabulated frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to...
01:16Basic Discrete Time Signals
The unit step sequence is defined as 1 for zero and positive values of the integer n. This sequence can be graphically displayed using a set of eight sample points, showing a step function starting from n=0 and remaining constant thereafter.
The unit impulse or sample sequence is mathematically expressed as zero for all n values except at n=0, where it is one. The unit impulse sequence, denoted by δ(n), is the first difference of the unit step sequence, while the unit step sequence u(n) is the...
The unit impulse or sample sequence is mathematically expressed as zero for all n values except at n=0, where it is one. The unit impulse sequence, denoted by δ(n), is the first difference of the unit step sequence, while the unit step sequence u(n) is the...