机器学习方法来分类与老年女性认知功能相关的身体功能和肌肉力量下降:基于三种速度的步态特征
Bohyun Kim1,2, Changhong Youm1,2, Hwayoung Park2
1Department of Health Sciences, The Graduate School of Dong-A University, Busan, Republic of Korea.
Frontiers in public health
|July 10, 2024
概括
使用机器学习的步态分析准确地识别了老年女性认知和身体功能的下降. 特定的步态特征有效地预测了认知,身体和肌肉力量的减少.
科学领域:
- 老年学和生物力学
- 机器学习在健康科学中的应用.
- 对衰老的生物标志物发现
背景情况:
- 衰老与认知和身体功能下降有关,影响神经运动控制和运动能力.
- 步态是认知和身体健康的复杂指标,整合了感官输入,运动规划和肌肉骨功能.
- 对生物标志物的研究,同时考虑行走的多个因素是有限的.
研究的目的:
- 用三个步行速度的逐步回归来提取步行特征.
- 评估机器学习模型在认知功能 (Cog) 和身体功能 (PF) 衰退的分类中的准确性.
- 评估Cog和肌肉力量 (MS) 的综合下降的分类准确性.
主要方法:
- 198名65岁以上的妇女接受了认知评估,坐立测试和手握强度测试.
- 步行被评估在19米路径的首选,较慢和更快的步行速度.
- 用逐步回归来选择机器学习模型的步态特征.
主要成果:
- 随机森林模型使用三个选定的步态特征实现了Cog+PF分类的91.9%准确性.
- 支持矢量机器模型使用两个选定的步态特征实现了Cog+MS分类的93.6%准确性.
- 选择的特征包括步行速度,双重支阶段变化,步行时间和步行不对称.
结论:
- 跨多种速度分析的步态特征可以有效地分类认知,身体和肌肉力量下降的老年女性.
- 选择的步态特征作为可靠的生物标志物用于客观评估与年龄相关的功能衰退.
- 这种方法为改善老龄化人口的健康监测和干预策略提供了潜力.
相关概念视频
Classification of Skeletal Muscle Fibers
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Alterations in Muscle Tone lll
Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...


