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Maximum ground reaction force in relation to tibial bone mass in children and adults


Anliker, E; Rawer, R; Boutellier, U; Toigo, M (2011). Maximum ground reaction force in relation to tibial bone mass in children and adults. Medicine and Science in Sports and Exercise, 43(11):2102-2109.

Abstract

PURPOSE:: To assess maximum voluntary forefoot ground reaction force (Fm1LH) during multiple one-legged hopping (m1LH, a new jumping maneuver) and to determine the correlation between tibial volumetric bone mineral content (vBMC, a valid surrogate of bone strength) and Fm1LH. METHODS:: One hundred and eighty-five females (8-82 years old) and 138 males (8-71 years old) performed m1LH to measure Fm1LH acting on the forefoot during landing. Peripheral quantitative computed tomography (pQCT) scans were obtained to assess vBMC at 4, 14, 38 and 66% tibia length and calf muscle cross-sectional area (Ar.muscle) at the 66%-site. RESULTS:: In all 323 participants, Fm1LH corresponded to 3-3.5 times body weight, and Fm1LH predicted vBMC14% by 84.0% (P < 0.001). vBMC14% was better correlated with Fm1LH than with Ar.muscle in both males (R = 0.841 vs. R = 0.724) and females (R = 0.765 vs. R = 0.597). Fm1LH and vBMC14% both increased during growth and afterwards remained constant or decreased with age, but never increased above the values reached at the end of puberty. Fm1LH decreased by 23.6% between 21-30 and 61-82 years in females and by 14.0% between 31-40 and 51-71 years in males. vBMC14% decreased by 13.7% in females between 21-30 and 61-82 years but remained unchanged in adult males. CONCLUSIONS:: m1LH yields the highest (i.e. maximum) ground reaction force relative to other jumping maneuvers. Since bone strength is strongly governed by maximum muscle force, the concurrent assessment of pQCT-derived bone strength and Fm1LH might represent a new approach for the operational evaluation of musculoskeletal health.

PURPOSE:: To assess maximum voluntary forefoot ground reaction force (Fm1LH) during multiple one-legged hopping (m1LH, a new jumping maneuver) and to determine the correlation between tibial volumetric bone mineral content (vBMC, a valid surrogate of bone strength) and Fm1LH. METHODS:: One hundred and eighty-five females (8-82 years old) and 138 males (8-71 years old) performed m1LH to measure Fm1LH acting on the forefoot during landing. Peripheral quantitative computed tomography (pQCT) scans were obtained to assess vBMC at 4, 14, 38 and 66% tibia length and calf muscle cross-sectional area (Ar.muscle) at the 66%-site. RESULTS:: In all 323 participants, Fm1LH corresponded to 3-3.5 times body weight, and Fm1LH predicted vBMC14% by 84.0% (P < 0.001). vBMC14% was better correlated with Fm1LH than with Ar.muscle in both males (R = 0.841 vs. R = 0.724) and females (R = 0.765 vs. R = 0.597). Fm1LH and vBMC14% both increased during growth and afterwards remained constant or decreased with age, but never increased above the values reached at the end of puberty. Fm1LH decreased by 23.6% between 21-30 and 61-82 years in females and by 14.0% between 31-40 and 51-71 years in males. vBMC14% decreased by 13.7% in females between 21-30 and 61-82 years but remained unchanged in adult males. CONCLUSIONS:: m1LH yields the highest (i.e. maximum) ground reaction force relative to other jumping maneuvers. Since bone strength is strongly governed by maximum muscle force, the concurrent assessment of pQCT-derived bone strength and Fm1LH might represent a new approach for the operational evaluation of musculoskeletal health.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Physiology
07 Faculty of Science > Institute of Physiology

04 Faculty of Medicine > Center for Integrative Human Physiology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2011
Deposited On:12 May 2011 12:08
Last Modified:05 Apr 2016 14:54
Publisher:Lippincott Wiliams & Wilkins
ISSN:0195-9131
Additional Information:This is a non-final version of an article published in final form in Medicine and Science in Sports and Exercise.
Publisher DOI:10.1249/MSS.0b013e31821c4661
PubMed ID:21502901
Permanent URL: http://doi.org/10.5167/uzh-48042

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