TY - JOUR
T1 - Changes in postural strategy during exercise against perturbation using the balance exercise assist robot
T2 - A pilot study
AU - Itoh, Norihide
AU - Tanabe, Shigeo
AU - Hirano, Satoshi
AU - Saitoh, Eiichi
AU - Kawabata, Jumpei
AU - Imoto, Daisuke
AU - Mikami, Yasuo
AU - Kubo, Toshikazu
N1 - Publisher Copyright:
© 2017 The Society of Physical Therapy Science. Published by IPEC Inc.
PY - 2017/1
Y1 - 2017/1
N2 - [Purpose] To clarify the changes in postural strategy by evaluating leg joint motion and muscle activity before and after continuous exercise against perturbation using the Balance Exercise Assist Robot (BEAR). [Subjects and Methods] Nine healthy subjects (male 7, female 2; mean age 23 ± 1 years) performed a postural perturbation coping exercise only. In the task, the robot leaned and moved automatically. Participants were instructed to maintain their default upright position and they performed the exercise five times in a row (1 minute/trial). Changes in total movement distance, range of motion of each joint (hip, knee, ankle), and mean activity of each muscle for the first and fifth trials were compared. [Results] The total movement distance of BEAR and range of motion in the hip decreased significantly from the first trial to the last trial. No change in muscle activity was observed in the rectus femoris, biceps femoris, tibialis anterior or gastrocnemius. [Conclusion] The results for exercise against perturbation using BEAR in this study suggest that BEAR may be a promising method to improve the ankle strategy for maintaining a standing posture.
AB - [Purpose] To clarify the changes in postural strategy by evaluating leg joint motion and muscle activity before and after continuous exercise against perturbation using the Balance Exercise Assist Robot (BEAR). [Subjects and Methods] Nine healthy subjects (male 7, female 2; mean age 23 ± 1 years) performed a postural perturbation coping exercise only. In the task, the robot leaned and moved automatically. Participants were instructed to maintain their default upright position and they performed the exercise five times in a row (1 minute/trial). Changes in total movement distance, range of motion of each joint (hip, knee, ankle), and mean activity of each muscle for the first and fifth trials were compared. [Results] The total movement distance of BEAR and range of motion in the hip decreased significantly from the first trial to the last trial. No change in muscle activity was observed in the rectus femoris, biceps femoris, tibialis anterior or gastrocnemius. [Conclusion] The results for exercise against perturbation using BEAR in this study suggest that BEAR may be a promising method to improve the ankle strategy for maintaining a standing posture.
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U2 - 10.1589/jpts.29.16
DO - 10.1589/jpts.29.16
M3 - Article
AN - SCOPUS:85011417972
SN - 0915-5287
VL - 29
SP - 16
EP - 19
JO - Journal of Physical Therapy Science
JF - Journal of Physical Therapy Science
IS - 1
ER -