Muscle Power Predicts Adolescent Bone Strength: Iowa Bone Development Study

Medicine and Science in Sports and Exercise
Kathleen F JanzSteven M Levy

Abstract

To assess association between lower body muscle power and bone strength as well as the mediating effect of muscle cross-sectional area (MCSA) on that association. Participants (141 males and 162 females) were approximately 17 yr. Muscle power was predicted using vertical jump and the Sayers equation. Using peripheral quantitative computed tomography (pQCT), bone strength indices were obtained at two locations of the tibia, corresponding to primary stressors acting upon each site: bone strength index for compression (BSI) at the distal 4% site; density-weighted polar section modulus strength-strain index (SSIp) and cortical bone area (CoA) at the 66% midshaft site for torsion. Muscle cross-sectional area was measured at the 66% site. Pearson bivariate and partial correlation coefficients were estimated to quantify the strength of the associations among variables. Direct and indirect mediation model effects were estimated, and 95% bootstrap confidence intervals were constructed to test the causal hypothesis. Height and maturity were examined as covariates. Pearson correlation coefficients among muscle power, MCSA, and bone strength were statistically significant (P < 0.01) and ranged from r = 0.54 to r = 0.78. After adjustment fo...Continue Reading

References

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May 20, 2014·British Journal of Sports Medicine·Kathleen F JanzSteven M Levy

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Citations

Mar 9, 2017·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Izabella A LudwaPanagiota Klentrou
Jan 25, 2018·Journal of Applied Biomechanics·Paige E RiceJeffrey M McBride
Feb 21, 2018·Medicine and Science in Sports and Exercise·Simon HigginsEllen M Evans
Jun 2, 2017·Journal of Strength and Conditioning Research·Alejandro Gomez-BrutonHeather McKay
Dec 18, 2018·Medicine and Science in Sports and Exercise·Ryan C WardSteven M Levy
Feb 20, 2018·Pediatric Exercise Science·Kathleen F Janz, Fatima Baptista
Sep 4, 2019·Medicine and Science in Sports and Exercise·Irene Rodríguez-GómezIgnacio Ara
Sep 10, 2019·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·Simon HigginsRichard D Lewis
May 23, 2020·Sports Health·Alejandro Gómez-BrutonGermán Vicente-Rodríguez
Sep 1, 2017·Journal of Strength and Conditioning Research·Vanessa R YinglingJennifer J Sherwood
Aug 21, 2019·Current Osteoporosis Reports·Jianfeng JinRichard T Jaspers
Oct 20, 2018·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·J Marin-PuyaltoJ Jürimäe
Jan 16, 2020·Medicine and Science in Sports and Exercise·Irene Rodríguez-GómezIgnacio Ara
Apr 4, 2021·International Journal of Environmental Research and Public Health·Izabella A LudwaPanagiota Klentrou
Nov 5, 2020·The Journal of Sports Medicine and Physical Fitness·Paulo F de Almeida-NetoBreno G Cabral
Aug 16, 2021·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Santiago Maillane-VanegasRômulo A Fernandes

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