Schoenfeld,BJ,奥托,A,Grgic,J,Tinsley,G,Haun,CT,坎贝尔,BI,埃斯卡兰特,G,Sonmez,GT,Cote,G,弗朗西斯,A,和Trexler,ET.身体成分的改变,静息代谢率,肌肉力量,和饮食行为对自然健美比赛准备的反应:一个案例研究。JStrengthCondRes34(11):3124-3138,2020年-我们在准备4场比赛以及随后的比赛后恢复期期间,对一名高水平的业余自然男性健美运动员进行了前瞻性案例研究。实验室测试在1年内每月进行一次,其中包括以下评估:B型超声评估肌肉厚度(MT),多频生物电阻抗分析,血压和心率评估,通过间接量热法的静息代谢率,皮肤褶皱测试,垂直跳跃高度,等距下体强度测试,和三因素饮食问卷。血液检查(包括睾丸激素,甲状腺激素,性激素结合球蛋白,肾小球滤过率,血尿素氮,天冬氨酸转氨酶,丙氨酸氨基转移酶,白细胞计数,白蛋白与球蛋白的比率,和脂蛋白A)在4个时间点分别从外部实验室获得。我们还评估了在比赛前立即采用的碳水化合物(carb)消耗和碳水化合物负荷峰值策略的有效性。受试者大量使用,高频,整个研究期间的全身训练计划。平均每日营养摄入量为1,953至3,415千卡:104-386克碳水化合物;253-263克蛋白质,和;57-95g脂质。身体脂肪在比赛前立即减少到非常低的水平(~5%),但这与瘦体重的损失相对应。新陈代谢的改变,荷尔蒙状态,爆炸强度,在赛前准备期间观察到饮食的心理方面;然而,所有这些变量在比赛后迅速恢复。实施碳水化合物消耗和碳水化合物负荷峰值策略会急剧增加MT,因此可能是一种可行的竞赛前方法,以最大程度地提高肌肉美学。
Schoenfeld, BJ, Alto, A, Grgic, J, Tinsley, G, Haun, CT, Campbell, BI, Escalante, G, Sonmez, GT, Cote, G, Francis, A, and Trexler, ET. Alterations in body composition, resting metabolic rate, muscular strength, and eating behavior in response to natural bodybuilding competition preparation: A
case study. J Strength Cond Res 34(11): 3124-3138, 2020-We carried out a prospective
case study in a high-level amateur natural male bodybuilder throughout preparation for 4 competitions and during the ensuing postcontest recovery period. Laboratory testing was conducted monthly over a 1-year period, which included the following assessments: B-mode ultrasound evaluation of muscle thickness (MT), multifrequency bioelectrical impedance analysis, blood pressure and heart rate assessment, resting metabolic rate via indirect calorimetry, skinfold testing, vertical jump height, isometric lower-body strength testing, and a 3-factor eating questionnaire. Blood work (including testosterone, thyroid hormone, sex hormone binding globulin, glomerular filtration rate, blood urea nitrogen, aspartate aminotransferase, alanine aminotransferase, white blood count, albumin to globulin ratio, and lipoprotein A) was obtained separately from an outside laboratory at 4 time points. We also assessed the effectiveness of a carbohydrate (carb) deplete and carb load peaking strategy employed immediately before competition. The subject employed a high-volume, high-frequency, whole-body training program throughout the study period. Average daily nutritional intakes ranged from 1,953 to 3,415 kcal: 104-386 g carb; 253-263 g protein, and; 57-95 g lipid. Body fat was reduced to very low levels (∼5%) immediately before competition, but this corresponded with a loss of lean mass. Alterations in metabolism, hormonal status, explosive strength, and psychological aspects of eating were observed during precontest preparation; however, all of these variables recovered quickly postcompetition. The implementation of a carb depleteand carb load peaking strategy acutely increased MT and thus may be a viable precontest approach to maximize muscular aesthetics.