Effects of post exercise protein supplementation on markers of bone turnover in adolescent swimmers
| Autor: | Panagiota Klentrou, Bareket Falk, Brandon J McKinlay, Dimitris Vlachopoulos, Alexandros Theocharidis, Andrea R. Josse |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
medicine.medical_specialty Whey protein Bone turnover Adolescent 030209 endocrinology & metabolism lcsh:TX341-641 Clinical nutrition Bone remodeling Beverages 03 medical and health sciences 0302 clinical medicine Double-Blind Method Polysaccharides Internal medicine Post exercise medicine Humans CTXI lcsh:Sports medicine Swimming Morning Nutrition and Dietetics High intensity swimming business.industry Water 030229 sport sciences Carbohydrate Protein supplementation Sports Nutritional Physiological Phenomena Procollagen peptidase Whey Proteins Endocrinology PINP Dietary Supplements Female Bone Remodeling business lcsh:RC1200-1245 lcsh:Nutrition. Foods and food supply Research Article Food Science |
| Zdroj: | Journal of the International Society of Sports Nutrition, Vol 17, Iss 1, Pp 1-11 (2020) Journal of the International Society of Sports Nutrition |
| ISSN: | 1550-2783 |
| Popis: | Background This study examined the effects of whey protein supplementation, compared with an isocaloric carbohydrate beverage and water, consumed immediately following an intense swimming trial on bone turnover in adolescent swimmers. Methods Fifty-eight (31 female, 27 male) swimmers (14.1 ± 0.4 years) were stratified into three groups matched for age, sex and body mass. The protein and carbohydrate groups consumed two isocaloric post-exercise beverages each containing 0.3 g.kg− 1 of whey protein (with ~ 6 mg of calcium) or maltodextrin while the control group consumed water. Participants provided a morning, fasted, resting blood sample, then performed an intense swimming trial consisting of a maximal 200 m swim followed by a high intensity interval swimming protocol (5x100m, 5x50m and 5x25m; 1:1 work-to-rest ratio). Following swimming, they consumed their first respective post-exercise beverage, and 2 h later, they performed a second maximal swim immediately followed by the second beverage. Approximately 3 h after the second beverage, two post-consumption blood samples were collected at 8 h and 24 h from baseline. Procollagen type 1 intact N-terminal propeptide (PINP) and carboxy-terminal collagen crosslinks (CTXI) were measured in serum. The multiples of medians of PINP and CTXI were also used to calculate bone turnover rate and balance. Results No significant changes were observed in PINP. CTXI increased (+ 11%) at 8 h in all groups, but then significantly decreased (− 22%) at 24 h in the protein group only. The protein group also had a significantly higher calculated rate of bone turnover at 8 h and 24 h compared to baseline, which was not observed in the other groups. Conclusions These results shed light on the potential importance of protein consumed shortly after intense swimming in promoting positive bone turnover responses up to 24 h following exercise in adolescent athletes. Clinical trial registration ClinicalTrials.gov PRS; NCT04114045 . Registered 1 October 2019 - Retrospectively registered. |
| Databáze: | OpenAIRE |
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