Neuromuscular performance and bone structural characteristics in young healthy men and women

Muscle mass and strength have been shown to be important factors in bone strength. Low muscular force predisposes to falling especially among elderly. Regular exercise helps to prevent falls and resulting bone fractures. Better understanding of muscle function and its importance on bone properties m...

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Bibliographic Details
Published in:European journal of applied physiology 2008-01, Vol.102 (2), p.215-222
Main Authors: Rantalainen, T., Heinonen, A., Komi, P. V., Linnamo, V.
Format: Article
Language:English
Subjects:
Adult
Biomedical and Life Sciences
Biomedicine
Bone density
Compressive Strength
Elastic Modulus
Exercise
Female
Fractures
Human Physiology
Humans
Male
Muscle Contraction - physiology
Muscle, Skeletal - physiology
Occupational Medicine/Industrial Medicine
Original Article
Physical Exertion - physiology
Physical fitness
Radiography
Sports Medicine
Stress, Mechanical
Tibia - diagnostic imaging
Tibia - physiology
Tomography
Women
Young adults
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Summary:Muscle mass and strength have been shown to be important factors in bone strength. Low muscular force predisposes to falling especially among elderly. Regular exercise helps to prevent falls and resulting bone fractures. Better understanding of muscle function and its importance on bone properties may thus add information to fracture prevention. Therefore the purpose of this study was to examine the relationship between bone strength and muscular force production. Twenty-young men [24 (2) years] and 20 [24 (3) years] women served as subjects. Bone compressive (BSI d ) and bending strength indices (50 Imax) were measured with peripheral quantitative computed tomography (pQCT) at tibial mid-shaft and at distal tibia. Ankle plantarflexor muscle volume (MV) was estimated from muscle thickness measured with ultrasonography. Neuromuscular performance was evaluated from the measurements of maximal ground reaction force (GRF) in bilateral jumping and of eccentric maximal voluntary ankle plantarflexor torque (MVC). Specific tension (ST) of the plantarflexors was calculated by dividing the MVC with the muscle volume. Activation level (AL) was measured with superimposed twitch method. Distal tibia BSI d and tibial mid-shaft 50 Imax correlated positively with GRF, MVC and MV in men ( r  = 0.45–0.67, P  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-007-0575-8