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Jump power and force have distinct associations with cortical bone traits: Findings from a cross-sectional study of high bone mass cases and controls

Hardcastle, Sarah A. and Gregson, Celia L. and Rittweger, Jörn and Crabtree, Nicola and Ward, Kate and Tobias, Jon H. (2013) Jump power and force have distinct associations with cortical bone traits: Findings from a cross-sectional study of high bone mass cases and controls. Journal of Clinical Endocrinology and Metabolism, 99 (1), pp. 266-275. The Endocrine Society. DOI: 10.1210/jc.2013-2837 ISSN 0021-972X

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Official URL: http://www.jcem.endojournals.org

Abstract

Context: Little is known of the relationships between muscle function and bone, based on the recently developed technique of jumping mechanography. Objective: Our objective was to determine associations between peak ground reaction force and peak power during a 1-legged hopping test and a single 2-legged jump, respectively, and cortical bone parameters. Design and Setting: This was a cross-sectional observational study in participants from the high bone mass cohort. Participants: Participants included 70 males (mean age 58 years) and 119 females (mean age 56 years); high bone mass cases and controls were pooled. Main Outcome Measures: Total hip bone mineral density (BMD) (measured by dual-energy x-ray absorptiometry scanning) and mid-tibial peripheral quantitative computed tomography (Stratec XCT2000L). Results: Jump power was positively related to hip BMD (standardized β [95% confidence interval] = 0.29 [0.07, 0.51], P = .01), but hopping force was not (0.03 [-0.16, 0.22], P = .74) (linear regression analysis adjusted for age, gender, height, and weight). In 113 participants with force and peripheral quantitative computed tomography data, both jump power and hopping force were positively associated with tibial strength strain index (0.26 [0.09, 0.44], P < .01; and 0.24 [0.07, 0.42], P = .01 respectively). Although hopping force was positively associated with bone size (total bone area 0.22 [0.03, 0.42], P = .02), jump power was not (0.10 [-0.10, 0.30], P = .33). In contrast, jump power was inversely associated with endocortical circumference adjusted for periosteal circumference (-0.24 [-0.40, -0.08], P < .01) whereas no association was seen for hopping force (-0.10 [-0.26, 0.07], P = .24). Conclusions: Although power and force are both positively associated with cortical bone strength, distinct mechanisms appear to be involved because power was primarily associated with reduced endocortical expansion (reflected by endocortical circumference adjusted for periosteal circumference, and hip BMD), whereas force was associated with increased periosteal expansion (reflected by total bone area).

Item URL in elib:https://elib.dlr.de/87973/
Document Type:Article
Title:Jump power and force have distinct associations with cortical bone traits: Findings from a cross-sectional study of high bone mass cases and controls
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hardcastle, Sarah A.UNSPECIFIEDUNSPECIFIED
Gregson, Celia L.UNSPECIFIEDUNSPECIFIED
Rittweger, Jörnjoern.rittweger (at) dlr.deUNSPECIFIED
Crabtree, NicolaUNSPECIFIEDUNSPECIFIED
Ward, KateUNSPECIFIEDUNSPECIFIED
Tobias, Jon H.UNSPECIFIEDUNSPECIFIED
Date:2013
Journal or Publication Title:Journal of Clinical Endocrinology and Metabolism
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:99
DOI :10.1210/jc.2013-2837
Page Range:pp. 266-275
Publisher:The Endocrine Society
ISSN:0021-972X
Status:Published
Keywords:Jump power, bone traits, bone mass, bone mineral density
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):Vorhaben Knocheneigenschaften
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Becker, Christine
Deposited On:04 Feb 2014 08:55
Last Modified:06 Sep 2019 15:22

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