A Comparison of the Trunk Muscle Activity According to the Direction of Upper Extremity Lifting using Elastic Band

Abstract

| Abstract |1 )PURPOSE: The purpose of this study was to compare the trunk muscle activity according to the direction of upper extremity lifting using elastic band. METHODS:Thirty three healthy individuals participated in this study. Each subject performed upper extremity lifting using elastic band on two different directions (straight and diagonal). And then we compared the muscle activity of respective trunk muscles of both directions. In order to examine the muscle activity of trunk muscle, we used the electromyogram to measure peak and mean torque in shoulder 90 degree flexion with sitting position. Electromyographic activities were recorded from the external oblique, internal oblique, rectus abdominis, and erector spine muscles during †Corresponding Author : f452000@naver.com This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. upper extremity lifting. RESULTS:As a result, first, there was significant difference between two directions. The muscle activity of ipsilateral external oblique and contralateral internal oblique is significantly increased in both straight and diagonal directions (p<0.05). Second, the muscle activities of external oblique and internal oblique of both side showed significant difference in diagonal direction (p<0.05). Third, the muscle activity of erector spine of both side showed significant difference in straight direction (p<0.05). CONCLUSION:Through this study, it is important that implement diagonal direction exercise at sitting positions to help increasing muscle activity of ipsilateral external oblique and contralateral internal oblique on patients when activating the trunk muscle or stabilizing the trunk.

Gender-based analysis of muscle activation while in a sedentary work posture

“…When the trunk bends forward, the length of the lumbar erector spinal muscle increases, and their strength changes, and leading to muscle activity higher [ 15 ]. Lee et al [ 16 ] reported that when resistance exercise was performed while extending the arm forward, the muscle activity of the lumbar erector spinal muscle increased, which is consistent with the results of the present study. Lee [ 17 ] reported that muscle activity in the neck and shoulder muscles was elevated with increased distance between the work table and the trunk.…”

Effect of bilateral upper extremity exercise on trunk performance in patients with stroke

“…Hodges et al observed that trunk muscles are activated before movement of upper extremities17 ) , and Lehman et al reported that movement of upper extremities are associated with trunk muscle activity18 ) . It has also been reported controlled movements of upper extremities activate trunk muscles19 ) .…”

Effect of Elastic Band Exercise on the Plantar Pressure and Maximum Muscle Strength in Female University Students Wearing High Heels

“…Through randomized distribution, 10 subjects were assigned to the experimental group which underwent the elastic band exercise program, and 10 subjects were assigned to the control group undergoing the stretching exercise program. During the experiment, subjects were instructed not to wear high heels and the elastic band and stretching exercise program referenced the exercise program used in Lee et al (2016).…”

“…The warm-up exercise was not influenced by the set, while the performance of the elastic band exercise was increased to five times per week (Table 1). The intensity of the elastic band exercise was set according to the evidence provided in a previous study (Lee et al, 2016) conducted on healthy adults, and a blue elastic band was used. …”