Effects of visibility and types of the ground surface on the muscle
activities of the vastus medialis oblique and vastus lateralis |
| |
| Authors: | Jeong-ki Park Dong-yeop Lee Jin-Seop Kim Ji-Heon Hong Jae-Ho You In-mo Park |
| |
| Institution: | 1) Department of Physical Therapy, Sunmoon University, Republic of Korea;2) Major in Physical Therapy, Department of Public Health, The Graduate School of Konyang University, Republic of Korea |
| |
| Abstract: | Purpose] The purpose of this study was to compare the effects of visibility and types of
ground surface (stable and unstable) during the performance of squats on the muscle
activities of the vastus medialis oblique (VMO) and vastus lateralis (VL). Subjects and
Methods] The subjects were 25 healthy adults in their 20s. They performed squats under
four conditions: stable ground surface (SGS) with vision-allowed; unstable ground surface
(UGS) with vision-allowed; SGS with vision-blocked; and UGS with vision-blocked. The
different conditions were performed on different days. Surface electromyogram (EMG) values
were recorded. Results] The most significant difference in the activity of the VMO and VL
was observed when the subjects performed squats on the UGS, with their vision blocked.
Conclusion] For the selective activation of the VMO, performing squats on an UGS was
effective, and it was more effective when subjects’ vision was blocked.Key words: Vision, Unstable, VMO |
| |
| Keywords: | |
|
|
