Effect of Resistance Training Maintaining the Joint Angle-torque Profile Using a Haptic-based Machine on Shoulder Internal and External Rotation

• Published in: Journal of Physical Therapy Science 2014, Vol.26(4), pp.525-528
• Main Authors: Kim, Yeonghun, Lee, Kunwoo, Moon, Jeheon, Koo, Dohoon, Park, Jaewoo, Kim, Kyengnam, Hong, Daehie, Shin, Inshik
• Format: Article
• Language: English
• Subjects: Haptic machine; Original; Rotator cuff
• ISSN: 0915-5287; 2187-5626
• DOI: 10.1589/jpts.26.525

[Purpose] The aim of this study was to present an individualized resistance training method to enable exercise while maintaining an exercise load that is set according to an individual’s joint angle-torque using a haptic-based resistance training machine. [Methods] Five participants (machine group) performed individualized shoulder internal and external rotation training with a haptic resistance training machine, while another five participants performed general dumbbell-based shoulder internal and external rotation training for eight weeks. Internal and external rotation powers of subjects were measured using an isokinetic machine before and after training. [Results] The average powers of both shoulder internal and external rotation has been improved after training (25.72%, 13.62%). The improvement in power of external rotation in the machine group was significantly higher than that in the control group. [Conclusion] This study proposes a haptic-based individualized rotator cuff muscle training method. The training protocol maintaining the joint angle-torque profile showed better improvement of shoulder internal/external rotation than dumbbell training.