Cited by 75Muscle Physiology and DisordersCardiovascular and exercise physiologySpaceflight effects on biology

Progressive stretch overload of skeletal muscle results in hypertrophy before hyperplasia

Antonio, J., Gonyea, W. J.·1993·Journal of Applied Physiology

Abstract

Intermittent stretch of the anterior latissimus dorsi (ALD) muscle produces fiber hypertrophy without fiber hyperplasia (J. Appl. Physiol. 74: 1893-1898, 1993). This study was undertaken to determine if a progressive increase in load and duration of stretch would induce extremely large muscle fiber areas or if the fibers would reach a critical size before the onset of fiber hyperplasia. Weights ranging from 10 to 35% of the bird's mass were attached to the right wing of 26 adult quail while the left wing served as the intra-animal control. The stretch protocol was as follows: day 1 (10% wt), days 2 and 3 (rest), day 4 (15% wt), days 5-7 (rest), day 8 (20% wt), days 9 and 10 (rest), days 11-14 (25% wt), days 15 and 16 (rest), and days 17-38 (35% wt). Birds were killed after 12, 16, 20, 24, and 28 days of stretch not including rest days. Muscle mass increased 174% (12 days), 196% (16 days), 225% (20 days), 264% (24 days), and 318% (28 days). Muscle length increased 60% (12 days), 34% (16 days), 59% (20 days), 50% (24 days), and 51% (28 days). Mean fiber area increased 111% (12 days), 142% (16 days), 75% (20 days), 90% (24 days), and 39% (28 days). Fiber number, which was measured histologically, increased significantly by 82% only in the 28 days of stretch group. The percentage of slow tonic fibers did not change for any of the time points examined.(ABSTRACT TRUNCATED AT 250 WORDS)

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Crossref · 10.1152/jappl.1993.75.3.1263

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Authors
Antonio, J., & Gonyea, W. J.
Affiliations
The University of Texas Southwestern Medical Center (US)
Venue
Journal of Applied Physiology
Published
1993-09-01
Volume
75
Issue
3
Pages
1263-1271
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W1863320770
Cited by
75
References
0
Citations by year
2025: 3 · 2024: 6 · 2023: 11 · 2022: 6 · 2021: 2 · 2020: 3 · 2019: 4 · 2018: 1 · 2016: 1 · 2015: 1 · 2014: 2 · 2013: 1
FWCI
0.77
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • NSUWorks (Nova Southeastern University) (submittedVersion)
Funders
  • National Institutes of Health (5r01ar040046-02)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR-40046)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Physiology › Spaceflight effects on biology
Keywords
skeletal muscle hypertrophy, muscle fiber hyperplasia, anterior latissimus dorsi, quail, muscle fiber area, muscle mass, muscle length, muscle growth
MeSH terms
Animals, Hyperplasia, Hypertrophy, Muscle Contraction, Muscles

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