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21.
Moisés de Hoyo Daniel Dylan Cohen Borja Sañudo Luis Carrasco Alejandro Álvarez-Mesa Juan José del Ojo 《Journal of sports sciences》2016,34(14):1363-1370
ABSTRACTWe analysed the time course of recovery of creatine kinase (CK) and countermovement jump (CMJ) parameters after a football match, and correlations between changes in these variables and match time–motion parameters (GPS-accelerometry) in 15 U-19 elite male players. Plasma CK and CMJ height (CMJH), average concentric force (CMJCON) and average eccentric force (CMJECC) were assessed 2 h before and 30 min, 24 h and 48 h post-match. There were substantially higher CK levels 30 min, 24 h and 48 h (ES: 0.43, 0.62, 0.40, respectively), post-match. CMJECC (ES: ?0.38), CMJH (ES: ?0.35) decreased 30 min post, CMJCON (ES: ?0.35), CMJECC (ES: ?0.35) and CMJH (ES: ?1.35) decreased 24 h post, and CMJCON (ES: ?0.41) and CMJH (ES: ?0.53) decreased 48 h post. We found correlations between distance covered at velocities ≤21 km · h?1 and changes in CK at 24 h (r = 0.56) and at 48 h (r = 0.54) and correlations between CK and distance covered >14 km · h?1 (r = 0.50), accelerations (r = 0.48), and decelerations (r = 0.58) at 48 h. Changes in CMJCON 30 min and 24 h post (both r = ?0.68) correlated with impacts >7.1·G. Decelerations >2 m · s?2 correlated with changes CMJCON (r = ?0.49) at 48 h and CMJECC (r = ?0.47) at 30 min. Our results suggest that match GPS-accelerometry parameters may predict muscle damage and changes in components of neuromuscular performance immediately and 24–48 h post-match. 相似文献
22.
The insulin response following carbohydrate ingestion enhances creatine transport into muscle. Cinnamon extract is promoted to have insulin-like effects, therefore this study examined if creatine co-ingestion with carbohydrates or cinnamon extract improved anaerobic capacity, muscular strength, and muscular endurance. Active young males (n?=?25; 23.7?±?2.5?y) were stratified into 3 groups: (1) creatine only (CRE); (2) creatine+ 70?g carbohydrate (CHO); or (3) creatine+ 500?mg cinnamon extract (CIN), based on anaerobic capacity (peak power·kg?1) and muscular strength at baseline. Three weeks of supplementation consisted of a 5?d loading phase (20?g/d) and a 16?d maintenance phase (5?g/d). Pre- and post-supplementation measures included a 30-s Wingate and a 30-s maximal running test (on a self-propelled treadmill) for anaerobic capacity. Muscular strength was measured as the one-repetition maximum 1-RM for chest, back, quadriceps, hamstrings, and leg press. Additional sets of the number of repetitions performed at 60% 1-RM until fatigue measured muscular endurance. All three groups significantly improved Wingate relative peak power (CRE: 15.4% P?=?.004; CHO: 14.6% P?=?.004; CIN: 15.7%, P?=?.003), and muscular strength for chest (CRE: 6.6% P?.001; CHO: 6.7% P?.001; CIN: 6.4% P?.001), back (CRE: 5.8% P?.001; CHO: 6.4% P?.001; CIN: 8.1% P?.001), and leg press (CRE: 11.7% P?=?.013; CHO: 10.0% P?=?.007; CIN: 17.3% P?.001). Only the CRE (10.4%, P?=?.021) and CIN (15.5%, P?.001) group improved total muscular endurance. No differences existed between groups post-supplementation. These findings demonstrate that three different methods of creatine ingestion lead to similar changes in anaerobic power, strength, and endurance. 相似文献
23.
磷酸肌酸在医学及运动中的应用 总被引:4,自引:0,他引:4
作为高能磷化物的磷酸肌酸在医学领域中广泛应用于治疗心肌缺血和心肌梗死。目前已经证明,磷酸肌酸应用于体育运动中具有提高运动员的无氧耐力、促进运动期间肌肉微循环的改善和对细胞膜的保护作用。 相似文献
24.
肌酸与运动能力 总被引:2,自引:0,他引:2
马东晓 《吉林体育学院学报》2004,20(4):46-47
从力量、耐力、抗疲劳对脂肪、糖代谢等方面的影响,就肌酸对运动能力的影响做了论述。 相似文献
25.
补充糖和/或肌酸对赛后血清肌酸激酶活性的影响 总被引:2,自引:0,他引:2
8名男性足球运动员,按正交表L4(23)进行实验设计,进行关于糖、肌酸补充对足球运动员血清肌酸激酶活性影响的效果观察实验。A组仅补充空白饮料;B组每天补充20克肌酸;C组每天仅补充100克以低聚糖为主的饮料;D组同时补充肌酸和低聚糖饮料,补充方法同B、C组。连续补充5天。补充前后进行血清肌酸激酶浓度的测试。补充前测试时均喝空白饮料,补充后测试时补充相应饮料。测试前进行模拟现场比赛。模拟现场比赛分为两个半场,各45分钟,间隔15分钟。每个半场包15个3分钟的循环,测量每个半场后的血清肌酸激酶的浓度。结果表明:单独补充糖或肌酸,同时补充糖和肌酸均可使运动员赛后的即刻血清肌酸激酶活性显著下降,而且糖和肌酸同时补充效果好。提示同时补充糖、肌酸有利于足球运动员提高赛场竞技能力。 相似文献
26.
采用实验法,按正交表L4(23)进行实验设计,探讨补充糖、肌酸对艺术体操运动员血糖、血乳酸、血尿素氮和血清肌酸激酶活性影响的效果.结果表明,单独补充糖或肌酸、同时补充糖和肌酸均可使运动员赛后血糖、血尿素氮和血清肌酸激酶活性显著下降,而且、糖和肌酸同时补充效果更好,有利于提高艺术体操运动员竞技能力. 相似文献
27.
查阅国外相关的大量文献发现,肌酸是一种有益于机体的营养素在运动过程中补充肌酸者,由于体内肌酸含量的变化,其运动能力也发生相应的变化 相似文献
28.
测定我院跆拳道运动员赛前训练期间血红蛋白、血尿素和血清肌酸激酶变化,分析评定其机能状况,并提出相宜建议。结果表明,血红蛋白与血尿素结合使用,能较准确地评定跆拳道运动员身体机能状况,血清肌酸激酶能有效评定训练后肌肉所受刺激及疲劳恢复情况。 相似文献
29.
北京市中长跑队运动员冬训阶段某些生理生化指标的监测分析 总被引:1,自引:0,他引:1
本文研究了9名备战十运会的中长跑运动员冬训期间生理生化指标的变化规律,以监控训练。结果显示,冬训大运动量训练期,男、女运动员的血红蛋白、血尿素、血清肌酸激酶、睾酮等指标均出现了不同程度的变化,经过适度调整以后逐渐恢复。从而表明,选择适宜指标对运动员进行机能监控,对于保持其最佳运动状态,提高运动成绩,有着重要的意义。 相似文献
30.
大强度力量练习后不同水平举重运动员血清肌酸激酶的变化研究 总被引:4,自引:0,他引:4
通过对不同水平举重运动员大强度力量练习后,血清肌酸激酶(CK)水平差异的观察,表明大强度运动后,高水平运动员和一般运动员的血清肌酸激酶(CK)活性均明显升高,但高水平运动员的血清肌酸激酶活性明显低于一般运动员,且差别有显著意义。 相似文献