• Journal of the Korean Applied Science and Technology
• /
• v.39 no.2
• /
• pp.335-339
• /
• 2022

The purpose of this research was to investigate the comparison of core muscle activities according to different performance in static Plank exercise. Ten "J" University's males(age, 23.20±0.65 years; height, 174.54±1.51 cm; body mass, 70.00±2.24 kg; and BMI, 22.94±0.51 kg/m²) completed this study as the subjects. Four type's static Plank motions were performed(full Plank, FP; elbow Plank, EP; side Plank, SP; reverse Plank, RP). For the EMG analysis, we measured the core muscle activities of right side on the rectus abdominis(RA), external oblique(EO), latissimus dorsi(LD), and erector spinae(ES). This research's results were as follows. LD and ES muscle activities were greatest during RP(p<.001). RA and EO muscle activities were greatest during EP(p<.001). Therefore, this results are anticipated to serve as basic data for static Plank performance applications in effective exercise programs.

• Journal of the Korean Applied Science and Technology
• /
• v.36 no.3
• /
• pp.758-765
• /
• 2019

The purpose of the this study was to determine the comparative analysis of body muscle activities in plank exercise with and without thera-band. Twelve healthy adult males(age, $21.75{\pm}.57$ years; height, $173.33{\pm}1.34cm$; body mass, $65.92{\pm}1.64kg$; and BMI, $21.93{\pm}.46kg/m^2$) participated in this study as subjects. Plank exercises(full, elbow, side, and reverse plank) were performed with four different thera-band in without(WT), red color(RT), blue color(BT), and siver color(ST). We measured the muscle activities of the erector spinae(ES), deltoideus p. acromialis(DA), external oblique(EO), rectus abdominis(RA), rectus femoris(RF), latissimus dorsi(LD), pectoralis major(PM), and biceps femoris(BF). The research findings were as follows. ES and DA muscle activities were greatest during full plank performed with the WT(p<.05). EO, RA, RF, and PM muscle activities were greatest during full plank performed with the ST(p<.05). ES and DA muscle activities were greatest during elbow plank performed with the WT(p<.05). RF and PM muscle activities were greatest during elbow plank performed with the ST(p<.05). ES, EO, RA, RF, LD, PM, and BF muscle activities were greatest during side plank performed with the ST(p<.05). DA, EO, RA, RF, LD, PM, and BF muscle activities were greatest during reverse plank performed with the ST(p<.05). These results are expected to serve as reference materials for plank exercise applications in training programs for body muscle strengthening.

• Journal of The Korean Society of Integrative Medicine
• /
• v.11 no.1
• /
• pp.159-166
• /
• 2023

Purpose : The purpose of this study was to compare the differences in muscle activity of the rectus abdominis, internal oblique, and external oblique muscles according to abdominal muscle exercise methods such as plank exercise, side plank exercise, and crunch exercise. Methods : This study was conducted with 37 college students. All subjects participating in this study were randomly assigned to the plank exercise group, the side plank exercise group, and the crunch exercise group. The exercise corresponding to each group was performed for a total of 8 weeks. The muscle activity of the abdominal muscles was measured before the experiment, 4 weeks, and 8 weeks, and the rectus abdominis, internal oblique, and external oblique muscles were measured. Results : As a result of comparison according to the period in the change in muscle activity of the abdominal muscles after exercise, the amount of change in muscle activity in all three muscles showed a significant difference. As a result of the post-hoc analysis, the muscle activity value of the internal oblique muscle after 4 weeks in the plank exercise showed a significant difference from the value after 8 weeks. In the side plank exercise, the muscle activity values of the rectus abdominis and external oblique muscles before and after 4 weeks showed significant differences from those after 8 weeks. And in the crunch exercise, the muscle activity value of the rectus abdominis muscle before exercise showed a significant difference from the value after 8 weeks. Conclusion : Plank exercise increases the muscle activity of the rectus abdominis, side plank exercise increases the rectus abdominis and external oblique muscles, and crunch exercise increases the muscle activity of the rectus abdominis. Therefore, it is thought that the stability of the trunk can be improved more efficiently if all three exercises are performed.

• Journal of The Korean Society of Integrative Medicine
• /
• v.9 no.4
• /
• pp.183-190
• /
• 2021

Purpose : The purpose of this study was to investigate the effect of side planks on the muscle thickness of the core muscles, external oblique, internal oblique, and transverse abdominis, and this study was conducted to compare whether side plank exercise according to the application of various unstable support surfaces increases the thickness by activating the action of the muscles. Methods : The subjects of this study were 30 healthy adults and were randomly and equally assigned to three groups by a random number table. All subjects were divided into three groups according to the application of an unstable support surface during the side plank(Group A = stable support, Group B = one unstable support, Group C = two unstable supports). The side plank exercise was performed 30 minutes a day, 3 times a week for a total of 4 weeks. The muscle thickness of the core muscle was measured before the intervention, 2 weeks, 4 weeks, and 3 times in total. All measured data were comparatively analyzed by repeated measures ANOVA and one-way ANOVA. The statistical significance level was set to .05. Results : The results of this study were as follows : 1. All muscles showed an interaction between training period and group. 2. There was a significant difference between the groups at the 2 weeks and 4 weeks of the internal oblique and transverse abdominis muscle measurements. Conclusion : The thickness of the abdominal muscle increased during the side plank exercise according to the support surface, and the thickness of the abdominal muscle increased the most during the side plank exercise on the unstable support surface. Therefore, it is thought that the addition of an unstable support surface will provide a more effective therapeutic effect on the thickness change of the abdominal muscle during side plank exercise.