scholarly journals Differential effects of jump versus running exercise on trabecular bone architecture and strength in rats

2020 ◽  
Vol 24 (1) ◽  
pp. 1-8
Author(s):  
Yong-In Ju ◽  
Hak-Jin Choi ◽  
Kazuhiro Ohnaru ◽  
Teruki Sone
Keyword(s):  
Trabecular Bone ◽  
Bone Architecture ◽  
Differential Effects ◽  
Running Exercise ◽  
Trabecular Bone Architecture

Differential effects of jump versus running exercise on trabecular architecture during remobilization after suspension-induced osteopenia in growing rats

2012 ◽  
Vol 112 (5) ◽  
pp. 766-772 ◽  
Author(s):  
Yong-In Ju ◽  
Teruki Sone ◽  
Kazuhiro Ohnaru ◽  
Hak-Jin Choi ◽  
Masao Fukunaga
Keyword(s):  
Bone Mass ◽  
Trabecular Bone ◽  
Treadmill Running ◽  
Bone Architecture ◽  
Tail Suspension ◽  
Trabecular Thickness ◽  
Running Exercise ◽  
Jump Exercise ◽  
Trabecular Bone Mass ◽  
Trabecular Bone Architecture

High-impact exercise is considered to be very beneficial for bones. We investigated the ability of jump exercise to restore bone mass and structure after the deterioration induced by tail suspension in growing rats and made comparisons with treadmill running exercise. Five-week-old male Wistar rats ( n = 28) were randomly assigned to four body weight-matched groups: a spontaneous recovery group after tail suspension ( n = 7), a jump exercise group after tail suspension ( n = 7), a treadmill running group after tail suspension ( n = 7), and age-matched controls without tail suspension or exercise ( n = 7). Treadmill running was performed at 25 m/min, 1 h/day, 5 days/wk. The jump exercise protocol consisted of 10 jumps/day, 5 days/wk, with a jump height of 40 cm. Bone mineral density (BMD) of the total right femur was measured by dual-energy X-ray absorptiometry. Three-dimensional trabecular bone architecture at the distal femoral metaphysis was evaluated using microcomputed tomography. After 5 wk of free remobilization, right femoral BMD, right hindlimb muscle weight, and body weight returned to age-matched control levels, but trabeculae remained thinner and less connected. Although both jump and running exercises during the remobilization period increased trabecular bone mass, jump exercise increased trabecular thickness, whereas running exercise increased trabecular number. These results indicate that restoration of trabecular bone architecture induced by jump exercise during remobilization is predominantly attributable to increased trabecular thickness, whereas running adds trabecular bone mass through increasing trabecular number, and suggest that jumping and running exercises have different mechanisms of action on structural characteristics of trabecular bone.

Architectural changes of trabecular bone caused by the remodeling process

2005 ◽  
Vol 874 ◽  
Author(s):  
Richard Weinkamer ◽  
Markus A. Hartmann ◽  
Yves Brechet ◽  
Peter Fratzl
Keyword(s):  
Trabecular Bone ◽  
Feedback Loop ◽  
Mechanical Response ◽  
Volume Fraction ◽  
Bone Volume ◽  
Bone Architecture ◽  
Mechanical Problem ◽  
Bone Volume Fraction ◽  
Obvious Effect ◽  
Trabecular Bone Architecture

AbstractUsing a stochastic lattice model we have studied the architectural changes of trabecular bone occurring while the structure is remodeled. Our model considers the mechanical feedback loop, which control the remodeling process. A fast algorithm was employed to solve approximately the mechanical problem. A general feature of the model is that a networklike structure emerges, which further coarsens while the bone volume fraction remains unchanged. Decreasing the mechanical response of the system by either lowering the external load or the internal mechano-sensitivity leads not only to a reduction of the bone volume fraction, but results in topological changes of the trabecular bone architecture, where the loss of horizontal trabeculae is the most obvious effect.

Changes in trabecular bone architecture in women during pregnancy

1999 ◽  
Vol 106 (5) ◽  
pp. 432-438 ◽  
Author(s):  
Seyed Mohsen Shahtaheri ◽  
Jean E. Aaron ◽  
David R. Johnson ◽  
David W. Purdie
Keyword(s):  
Trabecular Bone ◽  
Bone Architecture ◽  
Trabecular Bone Architecture

scholarly journals Direct mechanics assessment of elastic symmetries and properties of trabecular bone architecture

1996 ◽  
Vol 29 (12) ◽  
pp. 1653-1657 ◽  
Author(s):  
B. Van Rietbergen ◽  
A. Odgaard ◽  
J. Kabel ◽  
R. Huiskes
Keyword(s):  
Trabecular Bone ◽  
Bone Architecture ◽  
Trabecular Bone Architecture ◽  
Elastic Symmetries
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