Lee Sang-Yeol, Lee Su-Kyoung, Ahn Su-Hong
Department of Physical Therapy, Kyungsung University, Republic of Korea.
Department of Physical Therapy, College of Nursing, Healthcare Sciences and Human Ecology, Dong-Eui University: 176 Eomgwangno, Busanjin-gu, Busan 47340, Republic of Korea.
J Phys Ther Sci. 2017 Dec;29(12):2090-2093. doi: 10.1589/jpts.29.2090. Epub 2017 Dec 7.
[Purpose] This study aims to determine the effects of various wheelchair handle grip directions on the muscle activities of the upper body of an assistant during movement on ascending and descending ramps. [Subjects and Methods] The study subjects were 17 young and healthy participants whose mean age, height, and weight was 23.0 ± 2.7 years, 175.5 ± 4.7 cm, and 70.0 ± 14.2 kg, respectively; all subjects voluntarily consented to participate. Three grip directions were tested: general grip, medial grip, and neutral grip. Muscle activities in the serratus anterior, rhomboid, erector spine, biceps brachii, triceps brachii, bracioradialis, flexor carpi radialis, and extensor carpi radialis were measured using an electromyograph (EMG). [Results] Significant differences were seen in the muscle activities of the biceps brachii, bracioradialis, and flexor carpi radialis during wheelchair movement on an ascending ramp and in the biceps brachii and triceps brachii during movement on a descending ramp. [Conclusion] Measurement results showed that the general grip resulted in the highest muscle activities in the upper body of assistants during wheelchair movement on both ascending and descending ramps.
[目的] 本研究旨在确定在轮椅上下坡道移动过程中，不同轮椅手柄握持方向对辅助者上半身肌肉活动的影响。[对象与方法] 研究对象为17名年轻健康的参与者，其平均年龄、身高和体重分别为23.0±2.7岁、175.5±4.7厘米和70.0±14.2千克；所有受试者均自愿同意参与。测试了三种握持方向：常规握持、内侧握持和中立握持。使用肌电图（EMG）测量前锯肌、菱形肌、竖脊肌、肱二头肌、肱三头肌、肱桡肌、桡侧腕屈肌和桡侧腕伸肌的肌肉活动。[结果] 在轮椅上坡移动过程中，肱二头肌、肱桡肌和桡侧腕屈肌的肌肉活动以及在下坡移动过程中肱二头肌和肱三头肌的肌肉活动存在显著差异。[结论] 测量结果表明，在轮椅上下坡道移动过程中，常规握持导致辅助者上半身肌肉活动最高。
