Densidade mineral óssea é maior em adolescentes praticantes de esportes de combate

J Clin Densitom. 2012 Sep 11. pii: S1094-6950(12)00123-0. doi: 10.1016/j.jocd.2012.07.011. [Epub ahead of print]

Grip Strength Is a Predictor of Bone Mineral Density Among Adolescents Combat Sport Athletes.

Nasri R, Hassen Zrour S, Rebai H, Fadhel Najjar M, Neffeti F, Bergaoui N, Mejdoub H, Tabka Z.

Source

Laboratory of Physiology and Functional Explorations, Faculty of Medicine, Sousse, Tunisia. Electronic address: raouf.nasri@gmail.com.

Abstract

The aim of this study was firstly to investigate the correlation between bone parameters and grip strength (GS) in hands, explosive legs power (ELP), and hormonal parameters; second, to identify the most determinant variables of bone mineral density (BMD) among adolescent combat sport athletes. Fifty combat sport athletes aged 17.1±0.2yr were compared with 30 sedentary subjects matched for age, height, and pubertal stage. For all subjects, the BMD in deferent sites associated with anthropometric parameters were measured by dual-energy X-ray absorptiometry. The growth hormone (GH) and testosterone (TESTO) concentrations were tested. The GS in dominant (GSDA) and nondominant arms (GSNDA) and ELP were evaluated. All BMD measured were greater in athletes than in sedentary group (p<0 .01=".01" all="all" and="and" arms="arms" athletes="athletes" best="best" bmd="bmd" body="body" both="both" but="but" class="highlight" combat="combat" correlated="correlated" correlation="correlation" effect="effect" elp="elp" especially="especially" gh="gh" group="group" gs="gs" gsnda.="gsnda." gsnda="gsnda" has="has" height.="height." higher="higher" in="in" is="is" legs.="legs." measurements="measurements" nbsp="nbsp" of="of" only="only" osteogenic="osteogenic" p="p" practice="practice" predictor="predictor" proved="proved" sedentary="sedentary" showed="showed" significantly="significantly" sites="sites" span="span" spine="spine" sports="sports" study="study" style="border: 0px; font-size: 13px; font: inherit; margin: 0px; padding: 0px; vertical-align: baseline;" testo="testo" than="than" the="the" this="this" values="values" was="was" weight="weight" were="were" whole="whole" with="with" without="without">judo

 and karate kyokushinkai. Therefore, children and adolescent should be encouraged to participate in combat sport. Moreover, it suggested that the best model predicting BMD in different sites among adolescent combat sports athletes was the GSNDA.