Bone mineral density in adolescent female athletes: relationship to exercise type and muscle strength

Duncan, Craig S.; Blimkie, C. J.R.; Cowell, Christopher T.; Burke, Stephen T.; Briody, Julie; Howman‐Giles, Robert

doi:10.1097/00005768-200202000-00017

Cited by 196 publications

(168 citation statements)

References 30 publications

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“…All these results support the idea that sports associated with an adequate body weight and good muscular development stimulate growth and skeletal mineralisation (Maggioni, 1998;Duncan et al, 2002), while those associated with extremely low body weight and insufficient energy intake, the case of the present dancers, lead to poorer bone mineralisation (Sundgot-Borgen, 1998;Valentino et al, 2001).…”

Section: Discussionsupporting

confidence: 77%

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Influence of dietetic and anthropometric factors and of the type of sport practised on bone density in different groups of women

et al. 2003

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Objective: The aim of this work was to analyse the influence of dietetic and anthropometric data, as well as the sport practised, on the bone density of different groups of sportswomen. Subjects and methods: Dietetic, anthropometric and bone density data were collected from 74 women who practised different sports (15 skiers, 26 basketball players and 33 ballet dancers), and compared to those of 90 women who led sedentary lifestyles. Results: The sportswomen had higher bone mineral contents and bone densities than controls. However, the dancers showed similar spinal and hip values as those of controls, and lower forearm values. Low body weight and body mass index, and insufficient energy intake-characteristic of the dancers-were associated with poorer bone mineralisation status. Increased energy, protein, vitamin D, calcium, zinc and magnesium intakes were associated with greater bone density and mineral content at different sites. Conclusions: The worst bone density status was that of the dancers, who, as a group, displayed characteristics that have negative impacts in this respect (low energy intakes and low body weight). Dancers should therefore take steps to avoid suffering fractures and skeleto-muscular lesions which could negatively influence their health and physical performance. The greater consumption of milk products and calcium and better Ca/P ratio seen in the dancers could help this group to avoid bone deterioration. Sponsorship: This research was supported by the Ministerio de Trabajo y Asuntos Sociales, Instituto de la Mujer, III Plan de Investigació n Científica y Desarrollo Tecnoló gico.

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Section: Discussionsupporting

confidence: 77%

“…The beneficial effects of certain sports on bone mineralisation has been reported by several authors (Nickols-Richardson et al , 2000; Pettersson et al, 2000, Proctor et al, 2002, and physical activity is considered to have a positive influence on bone density by many others (Uusi-Rasi et al, 1997; Duncan et al, 2002).…”

Section: Discussionmentioning

confidence: 90%

Influence of dietetic and anthropometric factors and of the type of sport practised on bone density in different groups of women

et al. 2003

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“…Adicionalmente, foi observado que os atletas da natação e ciclismo tinham a DMO menor comparada com a dos de esportes de impacto, porém, não diferiram significativamente em relação aos não atletas. achados similares aos de outros estudos (13)(14)(15) . Em contraste, Tsukahara et al (16) sugerem que a participação em esportes aquáticos é um fator importante na prevenção da perda de material ósseo.…”

Section: Introductionunclassified

Efeitos da natação e do treinamento resistido na densidade mineral óssea de mulheres idosas

Kemper

Oliveira

Bottaro

et al. 2009

Rev Bras Med Esporte

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RESuMoExercícios com impacto como caminhada, saltos, corridas e exercícios resistidos são muito utilizados para prevenção da perda óssea em idosas. No entanto, poucos são os estudos que relatam os efeitos da natação na manutenção da massa óssea em mulheres idosas. Portanto, o objetivo deste estudo foi comparar os efeitos da natação com o treinamento resistido na densidade mineral óssea (DMO) de mulheres idosas. Vinte e três mulheres com idade média de 63,9 ± 6,49 anos foram divididas em dois grupos: 1) grupo natação (NAT, n = 13, que) treinou em intensidade entre 60 e 90% da freqüência cardíaca de reserva; 2) grupo treinamento resistido (TR, n = 10), que treinou os principais grupamentos musculares com três séries a 80% de 1RM. Os dois grupos praticaram três vezes por semana com uma hora de duração para cada sessão, durante seis meses. A DMO do colo do fêmur e da coluna lombar (L2-L3-L4) foi mensurada através de DXA antes (T0) e após seis meses de treino (T6). Os resultados mostraram que as médias para a DMO lombar em T0 (0,9250 ± 0,1506g/cm aBStRaCtImpact exercises like walking, jumping, running and resistance exercises are largely used to prevent bone loss in older women; however, few studies report the benefits of swimming to bone tissue. Therefore, the purpose of this study was to compare the effects of swimming with resistance training on bone mineral density (BMD) of older women. Twenty-three women with mean age of 63.9 ± 6.49 years were divided in two groups: 1) Swimming group (SWM, n = 13) trained at intensity between 60 and 90% of heart hate reserve; 2) Resistance training group (RT, n = 10) trained the main muscular groups with three sets at 80% of 1RM. Both groups trained 3 days/week, one hour per session, during six months. Femoral neck and lumbar spine (L2-L3-L4) BMD were assessed by DXA before (T0) and after six months (T6) of training. Results showed that mean BMD at lumbar spine at T0 (0.9250 ± 0.1506g/cm 2 ) and T6 (0.9303 ± 0.1269g/cm 2 ) for SWM, and at T0 (0.9739 ± 0.1249g/cm 2 ) and T6 (0.9737 ± 0.1317g/cm 2 ) for RT were not different when inter and intracompared. Similarly, there were no differences in femoral neck BMD at T0 (0.7784 ± 0.1523g/cm 2 ) and T6 (0.7905±0.1610g/cm intRoduÇÃo O avanço da idade está associado a desequilíbrio entre a reabsorção e formação óssea, levando a progressivo declínio na densidade mineral óssea (DMO). Em conjunto com a deterioração das trabéculas dos ossos, esse processo tem como conseqüência fragilidade óssea e aumento do risco de fraturas em pessoas idosas (1) . As pessoas mais acometidas são as mulheres, pois na condição de menopausa ou pós-menopausa esse declínio é mais acelerado e uma das formas para prevenção, manutenção e aquisição de massa óssea é o exercício físico (2) . O exercício físico tem importante papel na prevenção dessas alterações, evidenciando que maiores valores de DMO estão relacionados com estilos de vida mais ativos fisicamente (3)(4)(5)(6)(7)(8) e menor incidência de fraturas, diminuindo assim a mortalidade e morbidade (1,9) . A ca...

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“…Duncan et al (2002) reported that running and weight-bearing exercise were related to higher BMD than swimming and cycling, and knee extension strength was correlated with BMD in adolescent females. Similarly, Rubin and Lanyon (1984) also mentioned that resistive training can increase bone health, muscular strength and muscle mass with high stress.…”

Section: Discussionmentioning

confidence: 99%

Untitled

2017

JPES

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Problem statement: Data on bone health status, muscular peak torque (an indicator of muscular strength) and power is still lacking in non-active young Malays. Moreover, no study has been undertaken to investigate the association between bone health and anaerobic capacity in the Malay population. Hence, the present study was designed to address the paucity of this information. Approach: Young, healthy Malay females (n=33) and males (n=33) university students aged 18-25 years old were recruited for this study. The quantitative ultrasound measurements of bone speed of sound (SOS) in the legs were measured using a bone sonometer. Muscular peak torque of knee extension and flexion at 60 0 .s -1 and 180 0 .s -1 were measured using a BIODEX isokinetic dynamometer. Anaerobic capacities of the participants were determined via the Wingate anaerobic test. Purpose: To investigate the relationships of lower limbs' quantitative ultrasound measurement of the bones with muscular peak torque and anaerobic capacities in Malay university students. Results: Correlation coefficient (r) between non-dominant tibial SOS and muscular peak torque at 60 0 .s -1 and 180 0 .s -1 in female participants was 0.448 (p=0.009) and 0.388 (p=0.026) respectively. In males, moderate correlation was found between nondominant tibial SOS and muscular peak torque at 180 0 .s -1 knee flexion (r=0.419, p=0.015). Conclusions: There were moderate correlations (p<0.05) between muscular peak torque, mean power and peak power in the male participants. Nevertheless, no significant correlations were observed between tibial SOS and anaerobic capacities of mean power and peak power in both females and males. There were moderate relationships between quantitative ultrasound measurement of the bones with muscular strength, but not with anaerobic capacities in university students.

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Bone mineral density in adolescent female athletes: relationship to exercise type and muscle strength

Cited by 196 publications

References 30 publications

Influence of dietetic and anthropometric factors and of the type of sport practised on bone density in different groups of women

Influence of dietetic and anthropometric factors and of the type of sport practised on bone density in different groups of women

Efeitos da natação e do treinamento resistido na densidade mineral óssea de mulheres idosas

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