JRM Vol.34 No.6 pp. 1361-1370
doi: 10.20965/jrm.2022.p1361


Adapting Balance Training by Changing the Direction of the Tensile Load on the Lumbar Region

Tetsuro Miyazaki*, Takuro Aoki*, Junya Aizawa**, Toshihiro Kawase***, Maina Sogabe*, and Kenji Kawashima*

*Department of Information Physics and Computing, The University of Tokyo
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

**Faculty of Health Science, Juntendo University
2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan

***Department of Information and Communication Engineering, School of Engineering, Tokyo Denki University
5 Senju Asahi-cho, Adachi-ku, Tokyo 120-8551, Japan

June 2, 2022
October 18, 2022
December 20, 2022
static balance training, tandem standing posture, trainee’s adaptation, whole-body training device, pneumatic artificial muscle
Adapting Balance Training by Changing the Direction of the Tensile Load on the Lumbar Region

Whole-body training device using PAMs

In this study, we investigated trainees’ adaptation by conducting static balance training in a tandem standing posture. The horizontal tensile force loads in the front, back, left, and right directions were applied using pneumatic artificial muscles. We analyzed the adaptation that occurred during training by changing the direction of the horizontal tensile load on the lumbar region according to the tendency of the trainee. We conducted the experiments using the following protocol. Ten trainees participated in the experiment. In Phase 1, we applied loads in four directions the same number of times in random order to investigate the weak direction in the balance of each trainee. In Phase 2, we measured five trainees in each group: Group 1 was trained in the same way as Phase 1, and Group 2 was intensively trained in two directions in which the balance found in Phase 1 was difficult to maintain. In Phase 3, we performed the same experiment as in Phase 1. We analyzed the adaptation of the trainees using the margin of stability (MoS), a balance evaluation index. We compared the experimental results of Phases 1 and 3. In Group 1, the tendency for improvement in balance was unclear. On the other hand, the balance index in Group 2 improved in four out of five trainees in both the front-back and left-right directions. These results suggest that the training method concentrating on the weak direction could provide a clear directionality to the training effect.

Cite this article as:
T. Miyazaki, T. Aoki, J. Aizawa, T. Kawase, M. Sogabe, and K. Kawashima, “Adapting Balance Training by Changing the Direction of the Tensile Load on the Lumbar Region,” J. Robot. Mechatron., Vol.34, No.6, pp. 1361-1370, 2022.
Data files:
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Last updated on Feb. 01, 2023