Cited by 143Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismExercise and Physiological Responses

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Endurance Training-Induced Increase in Circulating Irisin Levels Is Associated with Reduction of Abdominal Visceral Fat in Middle-Aged and Older Adults

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Abstract

To elucidate the effects of endurance training on circulating irisin levels in young and middle-aged/older adults, and to determine the association between endurance training-induced alteration of irisin and reduction in body fat. Twenty-five healthy young (age 21 ± 1 years; 16 men, 9 women) and 28 healthy middle-aged/older adults (age 67 ± 8 years; 12 men, 16 women) participated in the study. Each age cohort was divided into two groups: the endurance-training group (14 young, 14 middle-aged/older) and the control group. Subjects in the training groups completed an 8-week endurance-training program (cycling at 60-70% peak oxygen uptake [V̇O2peak] for 45 min, 3 days/week). Before and after the intervention, we evaluated serum irisin level, V̇O2peak, and body composition. The increase in V̇O2peak in the young and middle-aged/older training groups after the intervention period was significantly greater than those in the young and middle-aged/older control groups (P < 0.05). Serum irisin level was significantly increased in the middle-aged/older training group after the intervention period (P < 0.01), but not in the young training group. Furthermore, in the middle-aged/older training group, the endurance training-induced reduction in visceral adipose tissue area was negatively correlated with the change in serum irisin level (r = -0.54, P < 0.05). These results suggest a possible role for secreted irisin in the exercise-induced alteration of abdominal visceral fat in middle-aged and older adults.

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Crossref · 10.1371/journal.pone.0120354

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Metadata

Authors
Miyamoto-Mikami, E., Sato, K., Kurihara, T., Hasegawa, N., Fujie, S., Fujita, S., Sanada, K., Hamaoka, T., Tabata, I., & Iemitsu, M.
Affiliations
Ritsumeikan University (JP)
Corresponding author
Iemitsu, Motoyuki
Venue
PLoS ONE
Published
2015-03-20
Volume
10
Issue
3
Pages
e0120354
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1969017622
Cited by
143
References
25
Citations by year
2026: 9 · 2025: 11 · 2024: 13 · 2023: 14 · 2022: 23 · 2021: 16 · 2020: 10 · 2019: 18 · 2018: 10 · 2017: 13 · 2016: 3 · 2015: 3
FWCI
7.59
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by)
  • Kobe University Repository Kernel (Kobe University) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ministry of Education, Culture, Sports, Science and Technology (25560378)
  • Japan Society for the Promotion of Science (26282199, 25560378, 26350825, 24300235, 24300239)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology (medical) › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Physiology (medical) › Exercise and Physiological Responses
Keywords
irisin, endurance training, visceral fat, middle-aged and older adults, peak oxygen uptake, body composition, aging, cycling training
MeSH terms
Aged, Body Composition, Body Weight, Female, Fibronectins, Humans, Male, Middle Aged, Physical Endurance, Case-Control Studies, Intra-Abdominal Fat, Young Adult

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