No effect of HMB or α-HICA supplementation on training-induced changes in body composition     

Filipe J. Teixeira  Catarina N. Matias  Cristina P. Monteiro  Maria J. Valamatos  Joana F. Reis  Ana Batista 《European Journal of Sport Science》2019,19(6):802-810

β-hydroxy-β-methylbutyrate (calcium: HMB-Ca and free acid: HMB-FA) and α-hydroxyisocaproic acid (α-HICA) are leucine metabolites that have been proposed to improve body composition and strength when combined with resistance exercise training (RET). In this double-blind randomized controlled pragmatic trial, we evaluated the effects of off-the-shelf supplements: α-HICA, HMB-FA and HMB-Ca, on RET-induced changes in body composition and performance. Forty men were blocked randomized to receive α-HICA (n?=?10, fat-free mass [FFM]?=?62.0?±?7.1?kg), HMB-FA (n?=?11, FFM?=?62.7?±?10.5?kg), HMB-Ca (n?=?9, FFM?=?65.6?±?10.1?kg) or placebo (PLA; n?=?10, FFM?=?64.2?±?5.7?kg). The training protocol consisted of a whole-body resistance training routine, thrice weekly for 8 weeks. Body composition was assessed by dual-energy x-ray absorptiometry (DXA) and total body water (TBW) by whole-body bioimpedance spectroscopy (BIS), both at baseline and at the end of weeks 4 and 8. Time-dependent changes were observed for increase in trunk FFM (p?相似文献   

乒乓球运动员以预防损伤为主的功能训练          下载免费PDF全文

李男  叶晶龙 《体育科研》2019,(5):95-98

功能训练的理念来源于康复领域，现已逐步应用到运动训练中。由于乒乓球运动的项目特征，乒乓球运动员肩关节、腰椎关节、膝关节、踝关节、腕关节等部位容易出现运动损伤。通过对乒乓球运动员常出现的功能问题进行分析，寻找存在的常见问题，进而提出相应的功能训练建议。乒乓球运动员可根据情况，增加改善肩关节、胸椎关节、髋关节、踝关节的活动范围的训练，提高肩胛骨、核心和下肢稳定性的训练，以及改善肩袖、躯干肌力不平衡的训练，通过针对性的功能训练有效减少乒乓球运动员损伤的发生。  相似文献   

新中国成立70年来体育教育专业人才培养的演变与特征分析     

周红萍  吕万刚 《武汉体育学院学报》2020,54(8):65-71

研究新中国成立70年来体育教育专业人才培养特征与演变规律，是呈现体育教育专业发展历史的需要，是推动体育教育专业发展和改革的一项基础性工程。采用文献资料法、历史法、专家访谈法和逻辑分析法，对体育教育专业发展规模、专业定位、培养方案、课程设置、教学模式等方面开展研究，结果表明：新中国成立70年来，体育教育专业经历了学习与移植、探索与挫折、混乱与恢复、开放与改革、提速与跨越、实践与创新的演变过程。表现出专业规模不断扩大、培养目标由单一向多元发展、课程设置逐渐模块化和弹性化、选修课和实践课学时逐步增加、总学分缓慢降低、人才培养模式多样、教学方法不断更新等特征。这些演变是基于国际国内的政治、经济、文化和科技发展的历史缘由。当下，专业认证已全面铺开，坚持"一流专业"建设是培养卓越体育教师的根与本。  相似文献   

Objective and subjective methods for quantifying training load in wheelchair basketball small-sided games     

Aitor Iturricastillo  Cristina Granados  Asier Los Arcos  Javier Yanci 《Journal of sports sciences》2017,35(8):749-755

The aim of the present study was to analyse the training load in wheelchair basketball small-sided games and determine the relationship between heart rate (HR)-based training load and perceived exertion (RPE)-based training load methods among small-sided games bouts. HR-based measurements of training load included Edwards’ training load and Stagno’s training impulses (TRIMP_MOD) while RPE-based training load measurements included cardiopulmonary (session RPEres) and muscular (session RPEmus) values. Data were collected from 12 wheelchair basketball players during five consecutive weeks. The total load for the small-sided games sessions was 67.5 ± 6.7 and 55.3 ± 12.5 AU in HR-based training load (Edwards’ training load and TRIMP_MOD), while the RPE-based training loads were 99.3 ± 26.9 (session RPEres) and 100.8 ± 31.2 AU (session RPEmus). Bout-to-bout analysis identified greater session RPEmus in the third [P < 0.05; effect size (ES) = 0.66, moderate] and fourth bouts (P < 0.05; ES = 0.64, moderate) than in the first bout, but other measures did not differ. Mean correlations indicated a trivial and small relationship among HR-based and RPE-based training loads. It is suggested that HR-based and RPE-based training loads provide different information, but these two methods could be complementary because one method could help us to understand the limitations of the other.  相似文献   

优秀沙排运动员薛晨肩关节脱臼的运动功能康复训练效果分析     

罗晨  张梦雪  薛晨  林万珩 《北京体育大学学报》2017,40(6):60-65

摘要：目的：通过对我国优秀沙滩排球运动员薛晨肩关节脱臼术案例进行分析，探索优秀运动员备战奥运会期间从手术后到重返训练场间的身体运动功能康复训练安排。方法：借鉴重返赛场训练的方法手段，从康复医学、体能训练和运动表现等多学科角度设计有针对性的康复训练方法。通过对比训练前后关节活动度、肌肉力量、功能动作筛查结果以及下肢力量爆发力测试结果检验以优秀沙滩排球运动员肩关节脱臼为个案分析重返赛场的可行性训练策略。结果：通过10周身体运动功能训练，运动员下肢爆发力、损伤侧肩关节内外旋活动度、均有所增加。功能动作筛查分数降低。但损伤侧肩关节内旋肌力、腹侧核心耐力有所下降。结论：以优秀沙滩排球运动员肩关节脱臼重返赛场的训练策略为个案分析，探索从运动损伤术后至重返赛场训练过程的周期安排、训练方法的有效性；通过科学整合康复训练、体能训练和专项技术训练不同训练内容，循序渐进的帮助运动员恢复专项技术和运动能力。  相似文献   

我国优秀48kg女子摔跤运动员孙亚楠里约奥运会赛前训练特征研究     

白银川  刘卫军  许奎元  张莉清  赵林林  路海 《北京体育大学学报》2017,40(9):105-111

摘要：运用文献资料法、专家访谈法、数理统计法、实地跟踪法和指标测试法，对我国优秀48 kg女子摔跤运动员孙亚楠备战里约奥运会期间的训练时间、训练阶段划分、训练内容和方法、训练负荷和部分生理生化指标进行分析和研究，结果显示:1)赛前训练时间为10周，强化9周,调整1周；训练内容主要为体能和技战术，体能课77次,占46.7%，技战术课88次，占53.3%；训练方法体能主要以重复和循环训练法，技战术主要以完整训练法和模拟比赛法；负荷安排节奏性强且呈波浪型趋势；CK、BUN与血乳酸最大浓度值均表明达到了赛前理想状态。2)孙亚楠赛前第2周、第3周和第4周前半段CK和BUN数值呈现出居高不下的态势，身体仍存在疲劳，未能适应周训练强度的安排。结论:1）孙亚楠赛前训练安排较为合理，完成了赛前既定的目标与任务；2）赛前第2周、第3周和第4周前半段实际训练效果不佳，机体未能适应训练强度安排，可能与赛前训练内容中有氧和无氧训练比例的安排、赛前训练方法中有氧和无氧能力训练强度的控制有关。  相似文献   

广州体育学院大型赛事服务人才培养质量评估研究*     

陈小英  曾〓芊  陈天赐 《广州体育学院学报》2017,37(6):36-39

借鉴柯氏评估模型,从反应层、学习层、行为层和结果层四个层次,评估分析广州体育学院在2010-2017年对大型体育赛事服务人才的培养质量.结果发现,大型体育赛事服务作为广州体育学院人才培养的重要途径,已经取得了一定的成效.它在总体上提升了体育高等院校人才综合素质,可以作为体育高等院校人才培养与社会融合的一个重要途径而推广应用.同时,广州体育学院大型体育赛事服务人才在工具技术和态度因素等方面存在短板现象.  相似文献   

平衡训练影响踝关节功能稳定性的研究     

李羚 《福建体育科技》2017,36(1)

目的:对踝关节不稳人群进行不同方式的平衡训练,以提高踝关节平衡控制能力及稳定性,减少踝关节损伤的发生几率;比较不同平衡训练方法对改善踝关节稳定性的实用性及优劣性。方法:进行为期3周的Biodex Balance System仪器及Bosu平衡球训练,测试踝关节稳定性。结果及结论:结果显示,Biodex Balance System仪器和Bosu平衡球都能显著提高个体踝关节稳定性及方向控制能力;Biodex Balance System仪对踝关节稳定性的提高更为明显。  相似文献   

“八型”素养:高职院校教师师德修养的新境界     

陈忠良 《岳阳职业技术学院学报》2011,26(3):58-61

师德是指教师的职业道德。不同层次与类型的学校对师德的要求各有侧重。同层次与类型的学校在不同时期对教师师德素养的要求也有所差别。新时期高职院校教师师德素养应包括为"忠诚型"、"敬业型"、"合作型"、"交融型"、"表率型"、"学习型"、"创新型"、"廉洁型"素养等八大新境界。  相似文献   

Physical activity and nutrition guidelines to help with the fight against COVID-19     

Kayvan Khoramipour  Aref Basereh  Amirhoseein Ahmadi Hekmatikar  Lindy Castell  Ruheea Taskin Ruhee 《Journal of sports sciences》2021,39(1):101-107

ABSTRACT

As the world is witnessing the epidemic of coronavirus disease 2019, emerging genetics and clinical pieces of evidence suggest a similar immunopathology to those of severe acute respiratory syndrome and Middle East respiratory syndrome. Staying at home to prevent the spread of the virus and consequently being largely inactive is associated with unintended consequences. These can actually enhance the infection risk and exacerbate poor health conditions including impaired immune function. Physical activity is a feasible way of improving health, particularly physical and mental health in a time of social isolation. However, people with certain health conditions in these circumstances may need a special physical activity programme in addition to any exercise they may already be performing via online programmes. This review aims to provide practical guidelines during the COVID-19 quarantine period. We suggest performing aerobic, resistance training, respiratory muscle training and yoga in the healthy, and in those with upper respiratory tract illness, patients with lower respiratory tract illness should be restricted to respiratory muscle training and yoga. In addition, vitamins D and C, omega-3 fatty acids, and regular consumption of fruit and vegetables might be considered as nutritional aids to support the immune system in those affected by COVID-19.  相似文献