Earticle

초록

영어

Background: This study aimed to compare trunk and lower limb muscle activity between healthy adults and older adults during the bird-dog exercise performed under visual occlusion conditions. Age-related declines in sensory integration and neuromuscular control may influence postural stabilization strategies, particularly during dynamic core exercises performed on unstable support surfaces. However, limited evidence exists regarding age-related differences in muscle activation patterns under visually constrained conditions. Methods: Thirty participants (15 adults, 15 older adults) performed the exercise for 20 s on an unstable surface under eyes-open and eyes-closed conditions. Each trial was maintained for 20 seconds and repeated three times with sufficient rest between trials. Surface electromyography was used to measure the activity of the rectus abdominis, external oblique, erector spinae, and gluteus maximus muscles. Electromyographic signals were normalized to maximal voluntary isometric contraction values for between-group comparisons. Results: The adult group showed significantly higher muscle activity in all the measured muscles compared to the older adult group (p<.05). Within-group analysis revealed that the gluteus maximus activity significantly increased under visual occlusion in the adult group, whereas rectus abdominis activity significantly increased in the older adult group (p<.05). Correlation analysis showed a significant positive correlation only in the rectus abdominis for the adult group, while the older adult group demonstrated significant positive correlations across all muscles. Conclusion: Adults primarily relied on selective muscle activation strategies to maintain stability, whereas older adults adopted a compensatory neuromuscular strategy characterized by simultaneous activation of multiple muscles. These findings demonstrate age-related differences in neuromuscular control during visually constrained core stabilization tasks and support the development of age-specific core stabilization training programs.

목차

ABSTRACT
Ⅰ. 서론
Ⅱ. 연구 방법
1. 연구 대상자 및 절차
2. 실험 도구 및 측정 방법
3. 분석 방법
Ⅲ. 연구 결과
1. 연구 대상자의 일반적인 특성
2. 성인과 노인 집단 간의 근 활성도 비교
3. 시각 조건 간의 근 활성도 상관관계
Ⅳ. 고찰
Ⅴ. 결론
참고문헌

키워드

저자

• 송선해 [ Sun-hae Song | 경남대학교 일반대학원 물리치료학과 대학원생 ] 교신저자

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한정형도수물리치료학회지 [The Journal of Korean Academy of Orthopedic Manual Physical Therapy]

• 간기

  연3회

• pISSN

  1226-3680

• eISSN

  2508-7282

• 수록기간

  1995~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 512 DDC 615