Title

Muscle Architecture And Strength: Adaptations To Short-Term Resistance Training In Older Adults

Keywords

Echo intensity; Exercise; Muscle quality; Sarcopenia; Ultrasonography

Abstract

Introduction: Muscle morphology and architecture changes in response to 6 weeks of progressive resistance training were examined in healthy older adults. Methods: In this randomized, controlled design, muscle strength, quality, and architecture were evaluated with knee extension, DEXA, and ultrasound, respectively, in 25 older adults. Results: Resistance training resulted in significant increases in strength and muscle quality of 32% and 31%, respectively. Cross-sectional area of the vastus lateralis increased by 7.4% (p≤0.05). Physiological cross-sectional area (PCSA) of the thigh, a composite measure of muscle architecture, was related significantly to strength (r=0.57; p≤0.01) and demonstrated a significant interaction after training (p≤0.05). Change in PCSA of the vastus lateralis was associated with change in strength independent of any other measure. Conclusions: Six weeks of resistance training was effective at increasing strength, muscle quality, and muscle morphology in older adult men and women. © 2013 Wiley Periodicals, Inc.

Publication Date

1-1-2014

Publication Title

Muscle and Nerve

Volume

49

Issue

4

Number of Pages

584-592

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/mus.23969

Socpus ID

84896105194 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84896105194

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