Doi Tatsuo, Haruna Ryosuke, Kamioka Naoyo, Bonkohara Shuzo, Hongu Nobuko
Dynamic Sports Medicine Institute, 1-10-28, Nishi-Shinsaibashi, Chuo-ku, Osaka 542-0086, Japan.
Department of Nutrition, Graduate School of Human Life and Ecology, Osaka Metropolitan University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.
Sensors (Basel). 2025 Jul 22;25(15):4546. doi: 10.3390/s25154546.
When people overextend their step length, it leads to an increase in vertical movement and braking force. The overextension elevates landing impacts, which may increase pain in the knees or lower back. The objective of this study was to examine the effects of soft-landing walking techniques in a 90 min, instructor-led group class for older adults. To evaluate a landing impact, an accelerometer measurement system (Descente LTD., Tokyo, Japan) was used to measure a participant 10 meter (m) of walking. Assessment outcomes included the average number of steps, step length, upward acceleration which reflects the landing impact, and survey questions. A total of 223 older adults (31 men, 192 women, mean age 74.4 ± 5.7 years) completed the walking lesson. Following the lesson, participants decreased their step lengths and reduced upward acceleration, along with an increased step count. The number of steps increased, and a positive correlation ( = 0.73, < 0.01) was observed between the rate of change in step length and upward acceleration. Over 95% of participants gave high marks for practicality and understanding the accelerometer measurements. The information derived from this study will provide valuable insight into the effectiveness of soft-landing techniques as a promotion of a healthy walking program for older adults.
当人们步幅过大时，会导致垂直运动和制动力增加。步幅过大还会提高落地冲击力，这可能会增加膝盖或下背部的疼痛。本研究的目的是在一个由教练指导的、为时90分钟的老年人团体课程中，检验软着陆步行技术的效果。为了评估落地冲击力，使用了一个加速度计测量系统（Descente LTD.，日本东京）来测量参与者10米的步行情况。评估结果包括平均步数、步幅、反映落地冲击力的向上加速度以及调查问卷问题。共有223名老年人（31名男性，192名女性，平均年龄74.4±5.7岁）完成了步行课程。课程结束后，参与者减小了步幅，降低了向上加速度，同时步数增加。步数增加了，并且在步幅变化率和向上加速度之间观察到正相关（=0.73，<0.01）。超过95%的参与者对实用性和对加速度计测量的理解给予了高分。从这项研究中获得的信息将为软着陆技术作为促进老年人健康步行计划的有效性提供有价值的见解。
