Ormsbee Michael J, Ward Emery G, Bach Christopher W, Arciero Paul J, McKune Andrew J, Panton Lynn B
Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL USA ; Institute of Sports Sciences and Medicine, Florida State University, Tallahassee, FL USA ; Discipline of Biokinetics, Exercise and Leisure Sciences, University of KwaZulu-Natal, Durban, South Africa.
Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL USA.
J Int Soc Sports Nutr. 2015 Jan 21;12(1):2. doi: 10.1186/s12970-014-0063-6. eCollection 2015.
The effects of multi-ingredient performance supplements (MIPS) on perceived soreness, strength, flexibility and vertical jump performance following eccentric exercise are unknown. The purpose of this study was to determine the impact of MIPS (NO-Shotgun®) pre-loaded 4 weeks prior to a single bout of downhill running (DHR) on muscle soreness and performance. Trained male runners (n = 20) were stratified by VO2max, strength, and lean mass into two groups; MIPS (n = 10) ingested one serving daily of NO-Shotgun® for 28 days and 30 min prior to all post-testing visits, Control (CON; n = 10) consumed an isocaloric maltodextrin placebo in an identical manner as MIPS. Perceived soreness and performance measurements (strength, flexibility, and jump height) were tested on 6 occasions; 28 days prior to DHR, immediately before DHR (PRE), immediately post (POST) DHR, 24, 48, and 72 hr post-DHR. Perceived soreness significantly increased (p < 0.05) post DHR compared to PRE at all time-points, with no difference between groups. Creatine kinase (CK) and lactate dehydrogenase (LDH) increased over time (p < 0.001) with no group x time interactions (p = 0.236 and p = 0.535, respectively). Significant time effects were measured for strength (p = 0.001), flexibility (p = 0.025) and vertical jump (p < 0.001). There were no group x time interactions for any performance measurements. Consumption of MIPS for 4 weeks prior to a single bout of DHR did not affect perceived soreness, muscle damage, strength, flexibility, or jump performance compared to an isocaloric placebo in trained male runners following a single bout of DHR.
多成分性能补充剂（MIPS）对离心运动后自觉酸痛、力量、柔韧性和垂直跳跃性能的影响尚不清楚。本研究的目的是确定在单次下坡跑（DHR）前4周预加载MIPS（NO-Shotgun®）对肌肉酸痛和性能的影响。训练有素的男性跑步者（n = 20）根据最大摄氧量、力量和瘦体重分为两组；MIPS组（n = 10）每天服用一份NO-Shotgun®，持续28天，并在所有测试后访视前30分钟服用，对照组（CON；n = 10）以与MIPS组相同的方式服用等热量的麦芽糊精安慰剂。在6个时间点测试自觉酸痛和性能指标（力量、柔韧性和跳跃高度）；DHR前28天、DHR前即刻（PRE）、DHR后即刻（POST）、DHR后24、48和72小时。与PRE相比，所有时间点DHR后自觉酸痛均显著增加（p < 0.05），两组之间无差异。肌酸激酶（CK）和乳酸脱氢酶（LDH）随时间增加（p < 0.001），无组×时间交互作用（分别为p = 0.236和p = 0.535）。力量（p = 0.001）、柔韧性（p = 0.025）和垂直跳跃（p < 0.001）有显著的时间效应。任何性能指标均无组×时间交互作用。在单次DHR后的训练有素的男性跑步者中，与等热量安慰剂相比，单次DHR前4周服用MIPS对自觉酸痛、肌肉损伤、力量、柔韧性或跳跃性能没有影响。
