Does Muscular Power Predict Bone Mineral Density in Young Adults?

Anthony Khawaja (1, 2) , Patchina Sabbagh (3) , Jacques Prioux (1) , Gautier Zunquin (3, 4, 5) , Georges Baquet (3) , Ghassan Maalouf (6) , Rawad El Hage (2)

1 M2S - Laboratoire Mouvement Sport Santé
2 UOB - University of Balamand [Liban]
3 URePSSS - Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488
4 MEPS - Mouvement, Équilibre, Performance, Santé
5 ULCO - Université du Littoral Côte d'Opale
6 USJ - Université Saint-Joseph de Beyrouth

The aim of this study was to explore the relationships between maximum power and bone variables in a group of young adults. Two hundred and one young adults (53 men and 148 women) whose ages range from 18 to 35 years voluntarily participated in this study. Weight and height were measured, and body mass index was calculated. Body composition, bone mineral content (BMC) and bone mineral density (BMD) were determined for each individual by dual-energy X-ray absorptiometry. Vertical jump was evaluated using a validated field test (Sargent test). The highest vertical jump was selected. Maximum power (P max, in watts) of the lower limbs was calculated accordingly. In young men, maximum power was positively correlated to whole body (WB) BMC (r = 0.65; p < 0.001), WB BMD (r = 0.41; p < 0.01), L1-L4 BMC (r = 0.54; p < 0.001), total hip (TH) BMC (r = 0.50; p < 0.001), femoral neck (FN) BMC (r = 0.35; p < 0.01), FN cross-sectional area (CSA) (r = 0.33; p < 0.05) and FN cross-sectional moment of inertia (CSMI) (r = 0.50; p < 0.001). In young women, maximum power was positively correlated to WB BMC (r = 0.48; p < 0.001), WB BMD (r = 0.28; p < 0.001), L1-L4 BMC (r = 0.34; p < 0.001), TH BMC (r = 0.43; p < 0.001), TH BMD (r = 0.21; p < 0.01), FN BMC (r = 0.42; p < 0.001), FN BMD (r = 0.31; p < 0.001), FN CSA (r = 0.41; p < 0.001), FN CSMI (r = 0.40; p < 0.001) and FN Z (r = 0.41; p < 0.01). The current study suggests that maximum power is a positive determinant of WB BMC, WB BMD, FN CSA, and FN CSMI in young men. It also shows that maximum power is a positive determinant of WB BMC, WB BMD, TH BMD, FN BMD, FN CSA, FN CSMI, and FN Z in young women.

Mots clés: maximum power; young adults; DXA variables

Domaines: Physiologie [q-bio.TO]

Anthony Khawaja, Patchina Sabbagh, Jacques Prioux, Gautier Zunquin, Georges Baquet, et al.. Does Muscular Power Predict Bone Mineral Density in Young Adults?. Journal of Clinical Densitometry, 2019, 22 (3), pp.311-320. ⟨10.1016/j.jocd.2019.01.005⟩. ⟨hal-02055752⟩