Earticle

초록

영어

This pilot randomized controlled trial (RCT) aimed to determine whether an 8-week progressive step exercise program improves sarcopenic outcomes compared with treadmill exercise and a nonexercise control condition in women with sarcopenia. The primary outcomes were appendicular skeletal muscle mass (ASM), grip strength, calf circumference, and five-times sit-to-stand (5×STS) performance. As secondary objectives, we examined the effects of the intervention on body composition, cardiorespiratory fitness, and skeletal muscle oxygen saturation (SmO2). Thirty-six women were randomly assigned, but 30 were included in the analysis across three groups: a control group (CON, n=10), a treadmill exercise group (TEG, n=10), and a step exercise group (SEG, n=10). Compared with the CON and TEG, the SEG demonstrated significant between-group differences in calf circumference (P=0.001, η2= 0.422), grip strength (P=0.003, η2=0.393), 5×STS (P<0.001, η2=0.617), and ASM (P=0.046, η2=0.194). Significant between-group differences were observed for postintervention maximal oxygen uptake (P<0.001, η2=0.571) and maximal heart rate (P=0.018, η2=0.193). During graded exercise, significant between-group differences in SmO2 emerged from level 4 (P<0.05) and persisted through level 10 (P<0.01). These preliminary findings suggest that step exercise may be a promising and practical intervention for improving sarcopenic outcomes, aerobic capacity, and muscle oxidative adaptation in women with sarcopenia. However, larger adequately powered RCTs are required to confirm these findings and establish the efficacy of this intervention.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
Participants
Intervention program
Outcome measures
Statistical analyses
RESULTS
Demographic and anthropometric characteristics
Changes in sarcopenia and body composition variables
Changes in cardiopulmonary and hemodynamic variables
Changes in SmO2, total hemoglobin, and skinfold thickness at GXT
SmO2 during the 30-min intervention session
DISCUSSION
CONFLICT OF INTEREST
ACKNOWLEDGMENTS
REFERENCES

키워드

저자

• Jae-Wan Park [ Research Institute of Sports and Industry Science, Hanseo University/Department of Physical Education, Korea University, Seoul, Korea ]
• Dong-Hyun Yoo [ Research Institute of Sports and Industry Science, Hanseo University, Seosan, Korea ]
• Sang-Geun Jo [ Research Institute of Sports and Industry Science, Hanseo University, Seosan, Korea ] Corresponding Author
• Yong-Seok Jee [ Research Institute of Sports and Industry Science, Hanseo University, Seosan, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  JER [Journal of Exercise Rehabilitation]

• 간기

  격월간

• pISSN

  2288-176X

• eISSN

  2288-1778

• 수록기간

  2013~2026

• 등재여부

  SCOPUS,KCI 등재

• 십진분류

  KDC 517 DDC 613