Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes
Thirteen female adolescent soccer players (14.3 ± 1.3 years) participated in a cross-over, double-blind trial examining the effects of Greek yogurt (GY) consumption on bone biomarkers during 5 days of intense soccer training. The study took place over two intervention weeks, which consisted of a pre...
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MDPI AG
2021
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oai:doaj.org-article:b4e5041c994441e4b5fbbe442c31f2ba2021-11-25T17:13:57ZCirculating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes10.3390/children81109612227-9067https://doaj.org/article/b4e5041c994441e4b5fbbe442c31f2ba2021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9067/8/11/961https://doaj.org/toc/2227-9067Thirteen female adolescent soccer players (14.3 ± 1.3 years) participated in a cross-over, double-blind trial examining the effects of Greek yogurt (GY) consumption on bone biomarkers during 5 days of intense soccer training. The study took place over two intervention weeks, which consisted of a pre-training assessment day, 5 training days, and a post-training assessment day. Participants completed the GY condition and a carbohydrate isocaloric placebo control pudding condition (CHO) in random order, 4 weeks apart. Morning, fasted, resting blood samples were collected pre- and post-training in each condition. Total osteocalcin (tOC), undercarboxylated osteocalcin (unOC), C-terminal telopeptide of type 1 collagen (CTX), osteoprotegerin (OPG), and receptor activator nuclear factor kappa-β ligand (RANKL) were measured in serum. The results showed no effects for time (pre- to post-training) or condition, and no interaction for tOC, CTX, OPG, RANKL, and the OPG/RANKL ratio. A time-by-condition interaction (<i>p</i> = 0.011) was observed in unOC, reflecting a post-training decrease in the GY, but not the CHO condition (−26% vs. −3%, respectively). However, relative unOC (% of tOC) decreased post-training (−16%), with no differences between conditions. These findings suggest that short-term high-impact intense training had no direct catabolic impact on bone metabolism, with GY adding no benefit beyond that of the isocaloric CHO control pudding.Panagiota KlentrouKatherine McKeeBrandon J. McKinlayNigel KurganBrian D. RoyBareket FalkMDPI AGarticlechildrenexerciseGreek yogurtbone turnoverbone metabolismosteokinesPediatricsRJ1-570ENChildren, Vol 8, Iss 961, p 961 (2021) |
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children exercise Greek yogurt bone turnover bone metabolism osteokines Pediatrics RJ1-570 |
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children exercise Greek yogurt bone turnover bone metabolism osteokines Pediatrics RJ1-570 Panagiota Klentrou Katherine McKee Brandon J. McKinlay Nigel Kurgan Brian D. Roy Bareket Falk Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes |
description |
Thirteen female adolescent soccer players (14.3 ± 1.3 years) participated in a cross-over, double-blind trial examining the effects of Greek yogurt (GY) consumption on bone biomarkers during 5 days of intense soccer training. The study took place over two intervention weeks, which consisted of a pre-training assessment day, 5 training days, and a post-training assessment day. Participants completed the GY condition and a carbohydrate isocaloric placebo control pudding condition (CHO) in random order, 4 weeks apart. Morning, fasted, resting blood samples were collected pre- and post-training in each condition. Total osteocalcin (tOC), undercarboxylated osteocalcin (unOC), C-terminal telopeptide of type 1 collagen (CTX), osteoprotegerin (OPG), and receptor activator nuclear factor kappa-β ligand (RANKL) were measured in serum. The results showed no effects for time (pre- to post-training) or condition, and no interaction for tOC, CTX, OPG, RANKL, and the OPG/RANKL ratio. A time-by-condition interaction (<i>p</i> = 0.011) was observed in unOC, reflecting a post-training decrease in the GY, but not the CHO condition (−26% vs. −3%, respectively). However, relative unOC (% of tOC) decreased post-training (−16%), with no differences between conditions. These findings suggest that short-term high-impact intense training had no direct catabolic impact on bone metabolism, with GY adding no benefit beyond that of the isocaloric CHO control pudding. |
format |
article |
author |
Panagiota Klentrou Katherine McKee Brandon J. McKinlay Nigel Kurgan Brian D. Roy Bareket Falk |
author_facet |
Panagiota Klentrou Katherine McKee Brandon J. McKinlay Nigel Kurgan Brian D. Roy Bareket Falk |
author_sort |
Panagiota Klentrou |
title |
Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes |
title_short |
Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes |
title_full |
Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes |
title_fullStr |
Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes |
title_full_unstemmed |
Circulating Levels of Bone Markers after Short-Term Intense Training with Increased Dairy Consumption in Adolescent Female Athletes |
title_sort |
circulating levels of bone markers after short-term intense training with increased dairy consumption in adolescent female athletes |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/b4e5041c994441e4b5fbbe442c31f2ba |
work_keys_str_mv |
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