O'Connor C I, Nielsen B D, Schott H C, Clayton H M
Department of Animal Science, Michigan State University, East Lansing 48824-1225, USA.
Equine Vet J Suppl. 2002 Sep(34):178-81. doi: 10.1111/j.2042-3306.2002.tb05414.x.
Weight training is commonly used by human athletes to increase strength and fitness. This study was performed to examine the effect of weight-carrying and nutritional supplementation on muscle development and growth in young horses. This study examined the effect of weight-carrying and nutritional supplementation on muscle development and growth. Seventeen horses were divided into 3 groups: controls exercised in a free-flow exerciser, a weight group that performed the same exercise, carrying progressively increasing weight up to 45 kg, and a weight-supplement group, that also received a myo-anabolic supplement. Horses were accustomed to handling for 30 days then baseline measurements of weight, body condition score, wither height, hip height, forearm and gaskin circumferences, and cross-sectional area of the longissimus dorsi were taken. Horses were stalled for 108 days then conditioned for 78 days. At the end of conditioning, all measurements were taken again. Supplemented weight-carrying horses increased their lean body tissue, as indicated by greater bodyweight (P<0.05) combined with decreased body condition score (P<0.01). Greater increases in wither height (P = 0.09) and hip height (P<0.01) were seen in weight-carrying horses, probably the result of increased muscle tone. Supplemented weight-carrying horses increased forearm (P<0.01) and gaskin circumferences (P<0.05). It is believed that weight-carrying, when combined with additional dietary protein, enabled greater muscle anabolism. Additional research into the potential additive effect of resistance training and diet are warrented.
负重训练在人类运动员中普遍用于增强力量和体能。本研究旨在探讨负重及营养补充对幼马肌肉发育和生长的影响。本研究考察了负重及营养补充对肌肉发育和生长的作用。17匹马被分为3组：对照组在自由流动式训练器中运动，负重组进行相同运动，逐渐增加负重至45千克，负重补充组除进行负重运动外还接受一种肌肉合成代谢补充剂。马匹先经过30天的适应训练，然后测量体重、身体状况评分、肩隆高度、髋部高度、前臂和小腿周长以及背最长肌的横截面积作为基线数据。马匹被圈养108天，然后进行78天的适应性训练。在适应性训练结束时，再次进行所有测量。负重并补充营养的马匹增加了瘦身体组织，表现为体重增加（P<0.05），同时身体状况评分降低（P<0.01）。负重马匹的肩隆高度（P = 0.09）和髋部高度增加更为明显（P<0.01），这可能是肌肉张力增加的结果。负重并补充营养的马匹前臂周长（P<0.01）和小腿周长增加（P<0.05）。据信，负重与额外的膳食蛋白质相结合，能实现更大程度的肌肉合成代谢。有必要对阻力训练和饮食的潜在相加作用进行更多研究。
