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Cited by 42Bone health and osteoporosis researchSports Performance and TrainingGrowth Hormone and Insulin-like Growth Factors

Bone metabolism in elite male rowers: adaptation to volume-extended training

Jürimäe, Jaak, Purge, Priit, Jürimäe, Toivo, von Duvillard, Serge P.·2006·European Journal of Applied Physiology
DOI 10.1007/s00421-006-0158-0
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Abstract

We examined the effect of 6-month volume-extended training on bone metabolism in elite male rowers. Twelve elite male rowers (20.8+/-3.0 years; 192.9+/-4.7 cm; 91.9+/-5.3 kg; body fat 10.1+/-2.3%; VO2max 6.2+/-0.5 l min(-1)) participated in this study. Bone biochemical markers, hormones, bone mineral content (BMC), and bone mineral density (BMD) were assessed before and after training. Average weekly training volume was significantly higher (P<0.05) during the 6 months of heavy training compared to relative rest (11.6+/-0.4 h week(-1) vs. 16.8+/-0.6 h week(-1)), while intensity remained the same. At the end of training, only arm BMD was significantly increased by 5.7%. Osteocalcin (16.6%), insulin-like growth factor-1 (IGF-1) (20.2%) and the bioavailability IGF-1 index (17.9%) were significantly increased. Before heavy training, relationships were observed between the whole body BMD and growth hormone (r=0.64; P< or =0.02), lumbar spine BMD and 1.25(OH)2 vitamin D (r=0.69; P< or =0.04), arm BMD and testosterone (r=0.59; P< or =0.05), and arm BMD and adiponectin (r=0.59; P< or =0.05). No relationship was found between BMC or BMD and blood biochemical measures 6 months later (r=0.56; P> or =0.05). In addition, osteocalcin was related to IGF-1 (r>0.58; P<0.048) and bioavailability IGF-1 index (r>0.59; P< or =0.055) before and after training. In summary, heavy training had a moderately favorable effect on BMD. Bone tissue at specific skeleton sites is sensitive to changes in training volume even in athletes with already high BMD values. Changes in BMD and bone formation may be caused by changes in specific hormones such as IGF-1 and adiponectin in male athletes.

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  • The acute decline in plasma calcium concentrations following a single bout of exercise appears transient, given prolonged periods of training do not modulate plasma calcium levels.

    “Despite an acute decline in plasma calcium concentrations following a single bout of exercise [[272], [273], [274]], this appears transient given prolonged periods of training do not modulate plasma calcium levels [[275], [276], [277]]”

    From Nutritional Considerations for the Vegan Athlete (2023) · cites this paper as [276]

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Authors
Jürimäe, J., Purge, P., Jürimäe, T., & von Duvillard, S. P.
Affiliations
University of Tartu (EE)
ORCID
Venue
European Journal of Applied Physiology
Publisher
Springer Science and Business Media LLC
Published
2006-04-01
Volume
97
Issue
1
Pages
127-132
ISSN
  • 0020-9376 (ISSN-L)
  • 1439-6319
  • 1439-6327
DOI
10.1007/s00421-006-0158-0
OpenAlex
W2011668169
Cited by
42
References
29
Citations by year
2026: 2 · 2023: 5 · 2020: 4 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 1 · 2015: 2 · 2014: 4 · 2012: 4
FWCI
2.72
Type
journal article
Language
en
Open access
closed
Licence
www.springer.com/tdm (tdm)
Locations
  • European Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
Keywords
bone metabolism, rowing, elite athletes, training volume, bone mineral density, bone mineral content, osteocalcin, insulin-like growth factor I, IGF-1 bioavailability, adiponectin, testosterone, growth hormone, 1,25-dihydroxyvitamin D, bone formation, exercise adaptation, bone hormones, male athletes, arms
MeSH terms
Adaptation, Physiological, Bone and Bones, Calcification, Physiologic, Physical Exertion, Hormones, Humans, Insulin-Like Growth Factor I, Male, Physical Fitness, Sports, Bone Density, Adiponectin

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