| Popis: |
The purpose of this study is to investigate the effects of supplementation of mulberry powder, mulberry extract and silk-worm powder during the 8 weeks of resistance exercise on muscle increase of rats. Fifty males, Sprague-Dawley rat,were randomly divided into 5 groups: CON(control group, n = 10), REG(resistance exercise group, n = 10), MPREG(mulberry powder intake and resistance exercise group, n = 10), ME REG(mulberry extract intake and resistanceexercise group, n = 10) and SP REG(silkworm powder intake and resistance exercise group, n = 10). After climbing theladder without weights during the 1 week of adaptation period, the rats in the resistance exercise group were trainedto climb a 0.98-m vertical(80 degree incline) ladder with weights in their tail during 7 weeks(10 times each day, 2 daysper week). After exercise, the skeletal muscle was extracted from the flexor hallucis longus. The absolute weight of skel-etal muscle was measured by the electronic balance and the relative weight of skeletal muscle about the weight wascalculated. The strength and density of legs muscle were analyzed by the computed tomography scan. After 8 weeksof resistance exercise, the absolute weight of skeletal muscle wasn't significant, but it increased in MP REG 8%, MEREG 8% and SP REG 10% compared to REG. The relative weight of skeletal muscle increased significantly in SP REGcompared to REG (p< 0.05). Additionally, there was a significant increase of density and strength of the forelegs inSP REG compared to CON (p< 0.05). However, there was no significant increase of density and strength of the hindlegs. In conclusion, regular resistance exercise made rats muscle increase and there was more muscle increase effectedby providing silkworm.Key words : Mulberry, Silkworm, Resistance exercise, Muscle increase |
