Earticle

초록

영어

This study examined differences in the time to onset of neck and shoulder muscle activation during arm elevation in older and younger adults. Eleven older and 10 younger adults were recruited. Data from neck and shoulder muscles were recorded as a subject elevated one arm. The mean time to onset of muscle activation was compared using an independent t-test. Older adults demonstrated significantly later onset of contraction of the ipsilateral sternocleidomastoid during shoulder flexion (p = 0.046), as well as significantly later contraction of the middle deltoid (p = 0.005), posterior deltoid (p = 0.027), contralateral splenius capitis (p = 0.008), upper trapezius (p = 0.020), middle trapezius (p = 0.012), lower trapezius (p = 0.012), and infraspinatus (p = 0.001) during shoulder abduction. These findings indicate that older adults use different neuromuscular strategies than younger adults during arm elevation. These changes could result from age-related decline in the neuromuscular system. The findings could be used to identify contributors to neck and shoulder discomfort or dysfunctionin older adults.

목차

Abstract
 Ⅰ. 서론
 Ⅱ. 연구 방법
  1. 연구 대상자
  2. 근육 수축 개시 시간 측정
  3. 실험절차
  4. 통계방법
 Ⅲ. 연구 결과
  1. 노인과 성인의 목과 어깨 근육의 수축 개시시간 비교
 Ⅳ. 논의
 Ⅴ. 결론
 참고문헌

키워드

저자

• TaeYeong Kim [ 김태영 | Major in Rehabilitation Science, Department of Health Science, Korea University Graduate School ]
• Minhee Kim [ 김민희 | Major in Rehabilitation Science, Department of Health Science, Korea University Graduate School ]
• BumChul Yoon [ 윤범철 | Major in Rehabilitation Science, Department of Health Science, Korea University Graduate School, Department of Physical therapy, Korea University ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  정형스포츠물리치료학회지 [Archives of Orthopedic and Sports Physical Therapy]

• 간기

  반년간

• pISSN

  1738-5946

• 수록기간

  2005~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 517 DDC 613