Effects of a 4-Month Recruit Training Program on Markers of Bone Metabolism

Evans, Rachel; Antczak, Amanda J.; Lester, M.; Yanovich, Ran; Israeli, Eran; Moran, Daniel S.

doi:10.1249/mss.0b013e318189422b

Cited by 83 publications

(98 citation statements)

References 38 publications

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“…Previous studies have reported conflicting findings with regards to longitudinal changes in bone turnover markers during military training, as well as with respect to differences between stress fracture cases and controls [19][20][21][22]. Therefore the relevance of bone turnover markers in predicting stress fracture risk remains unclear.…”

Section: Bone Turnover Markersmentioning

confidence: 99%

“…Conversely, a study in male (n = 58) and female (n = 155) US Marine recruits measured higher concentrations of the bone resorption marker deoxypyridinoline (DPD) at the end of an 11 week training programme compared with before the start of the training programme [36]. Evans et al observed higher concentrations of serum CTx at middle and end time points, of a 4-month programme of basic recruit training, compared with baseline concentrations in n = 58 male military recruits [21]. Concurrent analyses of bone formation and resorption markers during training, in the population of interest, may help to elucidate the mechanisms associated with bone turnover during military training.…”

Section: Bone Resorptionmentioning

confidence: 99%

See 1 more Smart Citation

Fundamental differences in axial and appendicular bone density in stress fractured and uninjured Royal Marine recruits — A matched case–control study

Davey¹,

Lanham-New²,

Shaw³

et al. 2015

Bone

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Section: Bone Turnover Markersmentioning

confidence: 99%

Section: Bone Resorptionmentioning

confidence: 99%

Fundamental differences in axial and appendicular bone density in stress fractured and uninjured Royal Marine recruits — A matched case–control study

Davey¹,

Lanham-New²,

Shaw³

et al. 2015

Bone

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“…For univariate comparisons, the 12-week values groups were compared to each other with analysis of covariance with the baseline value as a covariate. The preliminary statistical power analysis was based on previous studies using bALP as a bone marker (Evans et al 2008;Lester et al 2009;Menkes et al 1993;Shibata et al 2003). The literature indicated large effect sizes (ES [ 2) in association with exercise interventions.…”

Section: Discussionmentioning

confidence: 99%

Three-month bilateral hopping intervention is ineffective in initiating bone biomarker response in healthy elderly men

et al. 2011

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In animal studies, bone adaptation has been initiated successfully without the transient force spike associated with high impact exercises. Consequently, a 12-week bilateral hopping on the balls of the feet intervention was conducted. 25 elderly men (age 72(SD4) years, height 171(6) cm, weight 75(9) kg) were randomly assigned into exercise and control groups. Ten subjects in each group completed the study. Carboxyterminal propeptide of type I collagen (CICP), bone-specific alkaline phosphatase (bALP) and carboxyterminal telopeptide of type I collagen (CTx) were measured from venous blood samples at baseline, at 2 weeks and at the end of the intervention. Maximal ground reaction force (GRF), osteogenic index (OI) and jump height (JH) were determined from bilateral hopping test and balance was assessed with velocity of center of pressure (COP(velocity)) while standing on the preferred leg with eyes open. The intervention consisted of 5-7 sets of 10 s timed bilateral hopping exercise at 75-90% intensity three times/week. There was no significant group × time interaction for GRF, OI and JH (P = 0.065). GRF (11% change from baseline vs. 4%), OI (15 vs. 6%) and COP(velocity) (-10 vs. -1%) were not influenced by the intervention (P > 0.170), while the control group improved JH (P = 0.031) (2 vs. 18%). For the biomarkers, no effect was observed in MANOVA (P = 0.536) or in univariate analyses (P = 0.082 to P = 0.820) (CICP -2 vs. -3%, CTx 8 vs. -12%, bALP 0 vs. -3.7%). Allowing transient impact force spikes may be necessary to initiate a bone response in elderly men as the intervention was ineffective.

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“…Ainda, o metabolismo do cálcio sofre profundas modificações em resposta ao treinamento físico. Evans et al (50) identificaram elevação significativa dos marcadores bioquímicos do turnover de cálcio após quatro meses de treinamento físico, em homens e mulheres. Esse aumento comprova a importância da ingestão dietética desse nutriente para que sejam mantidos os processos de construção óssea, contração muscular e ainda a atividade de diversas enzimas dependentes de cálcio.…”

Section: Discussionunclassified

Consumo alimentar e perfil antropométrico de tenistas amadores e profissionais

Gomes

Ribeiro

Veibig

et al. 2009

Rev Bras Med Esporte

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RESUMoIntrodução: O perfil antropométrico e o consumo alimentar exercem grande influência no desempenho esportivo; entretanto, essas informações sobre tenistas brasileiros ainda são escassas. Objetivo: Descrever e comparar o consumo alimentar e o perfil antropométrico de tenistas amadores (AM) e profissionais (PRO). Métodos: Foram avaliados 24 tenistas, com a seguinte distribuição: profissionais (PRO; n = 9) e amadores (AM; n = 15). Os atletas foram avaliados quanto a variáveis antropométricas (peso, estatura, circunferências e dobras cutâneas) e a composição corporal foi estimada por três diferentes protocolos. As dietas foram avaliadas a partir de três diários alimentares. Resultados: Não houve diferença significativa no perfil antropométrico dos atletas PRO em relação aos AM (peso: 69,5 ± 9,8kg e 66,0 ± 5,0kg; estatura: 177,9 ± 4,3cm e 175,6 ± 2,7cm, IMC: 23,5 ± 1,4kg/m 2 e 22,6 ± 0,8kg/m 2 e gordura corporal: 13,0 ± 5,5% e 13,7 ± 2,4%, respectivamente). Observou-se significativo déficit energético entre a estimativa da necessidade energética e a ingestão energética relatada. O consumo de carboidratos apresentou-se no limite mínimo sugerido (AM: 6,3 ± 0,5g/kg/dia e PRO: 6,5 ± 0,7g/kg/dia), enquanto a ingestão de proteínas mostrou-se superior às recomendações disponíveis na literatura (AM: 2,4 ± 0,2g/kg/dia e PRO: 2,3 ± 0,3g/kg/dia). Com relação aos minerais, a principal preocupação foi a baixa ingestão de cálcio (AM: 798,1 ± 786,3mg/dia e PRO: 766,9 ± 602,4mg/dia). Conclusão: Não foram observadas diferenças significativas no perfil antropométrico e no consumo alimentar entre os atletas AM e PRO. Os desvios observados no consumo alimentar reforçam a necessidade de orientação/planejamento nutricional, a fim de atender às demandas específicas da modalidade, visando maximizar o desempenho.Palavras-chave: tênis, dieta, perfil antropométrico. aBStRaCtThe anthropometric profile and food intake play a key role in sports performance; however, there is little information available regarding Brazilian tennis players. Aim: the present study aimed to evaluate the food intake and the anthropometric profile of professional and amateur tennis players. Methods: twenty-four tennis players were distributed in two groups: professionals (PRO; n = 9) and amateurs (AM; n = 15). The athletes were evaluated on their anthropometric measurements (body weight, height, circumferences and skin folders). Body fat was estimated from three different equations. Food intake was determined by a 3-day food diary. Results: there were no significant differences from anthropometric profile between PRO and AM (body weight: 69.5 ± 9.8 kg and 66.0 ± 5.0 kg; height: 177.9 ± 4.3 cm and 175.6 ± 2.7 cm, BMI: 23.5 ± 1.4 kg/m 2 and 22.6 ± 0.8 kg/m 2 and body fat: 13.0 ± 5.5% and 13.7 ± 2.4%, respectively). Significant difference between the energy expenditure and estimation and reported energy intake was observed. Both groups showed low carbohydrate (AM: 6.3 ± 0.5 g/kg/day and PRO: 6.5 ± 0.7 g/kg/day) and high protein intake AM: 2.4 ± 0.2 g/kg/day and PRO: ...

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Effects of a 4-Month Recruit Training Program on Markers of Bone Metabolism

Cited by 83 publications

References 38 publications

Fundamental differences in axial and appendicular bone density in stress fractured and uninjured Royal Marine recruits — A matched case–control study

Fundamental differences in axial and appendicular bone density in stress fractured and uninjured Royal Marine recruits — A matched case–control study

Three-month bilateral hopping intervention is ineffective in initiating bone biomarker response in healthy elderly men

Consumo alimentar e perfil antropométrico de tenistas amadores e profissionais

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