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Training with reduced carbohydrate availability affects markers of bone resorption and formation in male academy soccer players from the English Premier League.
- Source :
-
European journal of applied physiology [Eur J Appl Physiol] 2024 Aug 18. Date of Electronic Publication: 2024 Aug 18. - Publication Year :
- 2024
- Publisher :
- Ahead of Print
-
Abstract
- Purpose: To test the hypothesis that training with reduced carbohydrate (CHO) availability increases bone resorption in adolescent soccer players.<br />Methods: In a randomised crossover design, ten male players (age: 17.4 ± 0.8 years) from an English Premier League academy completed an acute 90-min field-based training session (occurring between 10:30-12:00) in conditions of high (TRAIN HIGH; 1.5 g.kg <superscript>-1</superscript> , 60 g, 1.5 g.kg <superscript>-1</superscript> and 1.5 g.kg <superscript>-1</superscript> consumed at 08:00, during training, 12:30 and 13:30, respectively) or low CHO availability (TRAIN LOW; 0 g.kg <superscript>-1</superscript> ). Participants also completed a non-exercise trial (REST) under identical dietary conditions to TRAIN LOW. Venous blood samples were obtained at 08:30, 10:30, 12:30 and 14:30 for assessment of bone resorption (βCTX), bone formation (PINP) and calcium metabolism (PTH and ACa).<br />Results: External training load did not differ (all P > 0.05) between TRAIN HIGH and TRAIN LOW, as evident for total distance (5.6 ± 0.8; 5.5 ± 0.1 km), average speed (81 ± 9; 85 ± 12 m.min <superscript>-1</superscript> ) and high-speed running (350 ± 239; 270 ± 89 m). Area under the curve for both βCTX and PINP was significantly greater (P < 0.01 and P = 0.03) in TRAIN LOW versus TRAIN HIGH, whilst no differences in PTH or ACa (P = 0.11 and P = 0.89) were observed between all three trials.<br />Conclusion: CHO restriction before, during and after an acute soccer training session increased bone (re)modelling markers in academy players. Despite acute anabolic effects of bone formation, the long-term consequence of bone resorption may impair skeletal development and increase injury risk during growth and maturation.<br /> (© 2024. The Author(s).)
Details
- Language :
- English
- ISSN :
- 1439-6327
- Database :
- MEDLINE
- Journal :
- European journal of applied physiology
- Publication Type :
- Academic Journal
- Accession number :
- 39154306
- Full Text :
- https://doi.org/10.1007/s00421-024-05574-4