基层少儿游泳力量和柔韧素质训练

少儿游泳训练过程中,速度、力量、耐力、柔韧、灵敏等各项运动素质均衡发展是培养优秀运动员的重要因素。针对目前我省基层少儿游泳训练中普遍出现力量训练和柔韧素质训练脱节的现象进行分析,提出几点建议,为促进我省少儿游泳训练水平的提高提供理论参考。     

国朝盛文章 子昂始高蹈——陈子昂诗歌理论之探究

《修竹篇序》是陈子昂的诗歌理论纲要,也是唐诗革新的著名宣言。短序主张"兴寄"和"风骨",一扫齐梁以来的宫廷形式主义文风。《登幽州台歌》、《感遇》三十八首等便是陈子昂践履自己诗歌理论的代表作。     

Exercise‐induced muscle cramp: A prospective biochemical study in marathon runners

Exercise‐induced muscle cramp has been considered to result from disturbances of fluid and electrolyte balance resulting from excessive sweat loss. Serum biochemical and haematological measurements were made on 82 male marathon runners before and after a 42.2‐km race. Fifteen (18%) of the runners reported an attack of muscle cramp which occurred after 35 ± 6 km (mean±s.d.) had been covered. These subjects were not different from the others in terms of racing performance or training status. Serum electrolyte concentrations, including sodium and potassium, were not different between those suffering from cramp and those not so affected either before or after the race, although a significant (P< 0.001) increase in serum sodium concentration occurred in both groups. Serum bicarbonate concentrations fell to the same extent (from 28 to 24 mmol 1^‐1) in both groups. Significant decreases in plasma volume, calculated from the changes in circulating haemoglobin and haemotocrit, occurred in both groups of subjects, but there was no difference in the extent of the haemoconcentration. The results suggest that exercise‐induced muscle cramp may not be associated with gross disturbances of fluid and electrolyte balance.     

Effects of blood flow restriction without additional exercise on strength reductions and muscular atrophy following immobilization:A systematic review

Purpose:To investigate whether blood flow restriction(BFR) without concomitant exercise mitigated strength reduction and atrophy of thigh muscles in subjects under immobilization for lower limbs.Methods:The following databases were searched:PubMed,CINAHL,PEDro,Web of Science,Central,and Scopus.Results:The search identified 3 eligible studies,and the total sample in the identified studies consisted of 38 participants.Isokinetic and isometric torque of the knee flexors and extensors was examined in 2 studies.Cross-sectional area of thigh muscles was evaluated in 1 study,and thigh girth was measured in 2 studies.The BFR protocol was 5 sets of 5 min of occlusion and 3 min of free flow,twice daily for approximately 2 weeks.As a whole,the included studies indicate that BFR without exercise is able to minimize strength reduction and muscular atrophy after immobilization.It is crucial to emphasize,however,that the included studies showed a high risk of bias,especially regarding allocation concealment,blinding of outcome assessment,intention-to-treat analyses,and group similarity at baseline.Conclusion:Although potentially useful,the high risk of bias presented by original stodies limits the indication of BFR without concomitant exercise as an effective countermeasure against strength reduction and atrophy mediated by immobilization.     

探讨游泳教学训练中的核心力量训练

随着竞技体育水平的不断提高,各个游泳训练队逐渐加大对核心力量训练的重视。核心力量在这个游泳运动中,尤其是在水域不稳定的情况下,重要性不言而喻。核心力量训练需配合相应游泳项目才会达到较好的效果,使运动员在水中更好地提高自己成绩。教练更加起到不可忽视的作用,根据不同个体支队差异化训练以更好地提高运动员的成绩。下面本文主要针对游泳教学训练中的核心力量训练进行讨论。     

循环抗阻训练对女大学生肌力及有氧耐力影响研究*

目的：探讨循环抗阻训练对非体育专业女大学生等动肌力以及有氧工作能力的影响。方法：以在校非体育专项23名女大学生为研究对象,随机分为实验组和对照组,实验组进行8周循环抗阻训练,对照组不训练。训练前后,利用IsoMed2000等动肌力测试系统测试肩关节、腰腹、膝关节等部位等速肌力;利用CORTEX MetaMax-3B运动心肺功能测试仪测试最大摄氧量的变化。结果：1.通过8周循环抗阻训练,女大学生左右膝关节屈伸肌群等动肌力均显著高于训练前,腰腹伸肌群等动肌力极显著高于训练前,左右肩关节屈肌群等动肌力极显著高于训练前,右肩关节伸肌群等动肌力极显著高于训练前;2.通过8周循环抗阻训练,女大学生最大摄氧量绝对值、相对值以及最大摄氧量出现时间均极显著高于训练前。结论：通过8周循环抗阻训练,能提升女大学生有氧耐力,增加女大学生膝关节屈伸肌群、躯干伸肌群、左右肩关节屈肌群峰以及右肩关节伸肌群的力量。但躯干屈肌群和左肩关节伸肌群作用不明显,今后应用该套循环抗阻训练方案,应增加躯干伸肌群和左肩关节伸肌群锻炼动作。     

Cow's milk as a post-exercise recovery drink: implications for performance and health

Abstract

Post-exercise recovery is a multi-facetted process that will vary depending on the nature of the exercise, the time between exercise sessions and the goals of the exerciser. From a nutritional perspective, the main considerations are: (1) optimisation of muscle protein turnover; (2) glycogen resynthesis; (3) rehydration; (4) management of muscle soreness; (5) appropriate management of energy balance. Milk is approximately isotonic (osmolality of 280–290?mosmol/kg), and the mixture of high quality protein, carbohydrate, water and micronutrients (particularly sodium) make it uniquely suitable as a post-exercise recovery drink in many exercise scenarios. Research has shown that ingestion of milk post-exercise has the potential to beneficially impact both acute recovery and chronic training adaptation. Milk augments post-exercise muscle protein synthesis and rehydration, can contribute to post-exercise glycogen resynthesis, and attenuates post-exercise muscle soreness/function losses. For these aspects of recovery, milk is at least comparable and often out performs most commercially available recovery drinks, but is available at a fraction of the cost, making it a cheap and easy option to facilitate post-exercise recovery. Milk ingestion post-exercise has also been shown to attenuate subsequent energy intake and may lead to more favourable body composition changes with exercise training. This means that those exercising for weight management purposes might be able to beneficially influence post-exercise recovery, whilst maintaining the energy deficit created by exercise.     

神经肌肉电刺激摹拟肌肉力量训练的生物力学研究

基于对电刺激作用于神经肌肉组织的生理机制和电刺激技术系统与电刺激摹拟肌肉力量训练效果的生物力学关系的基本认识和实验研究,得出如下基本结论:(1)神经肌肉电刺激摹拟肌肉力量训练的效果显著优于肌肉直接电刺激;(2)神经肌肉电刺激摹拟肌肉力量训练使肌肉收缩的速度力量、最大力量和力量耐力均有显著的增长;(3)神经肌肉电刺激在注重提高肌肉功能群的力量素质时,能较好地满足肌群协调能力的发展;(4)电刺激能以较低的体能消耗实现局部肌群的摹拟力量训练。     

论力量训练在竞技健美操运动中的重要性

本文从竞技健美操的特点及竞赛规则对力量素质的要求入手，分析了力量素质在竞技健美操运动中的重要性，并依据运动训练学的理论，提出了相应的力量评定方法和训练负荷量度，为教练员和运动员提供了理论依据和实践参考。     

足球运动肌肉损伤后功能恢复手段的研究与发展

肌肉损伤是足球运动损伤的主要类型,对于肌肉损伤后功能恢复手段的研究与发展一直是现代足球运动发展过程中亟待解决的重要课题.本文主要采用文献资料、逻辑分析、归纳比较等研究方法,通过对足球运动损伤的类型及损伤后肌肉功能恢复的机制进行研究分析,重点提出了肌肉功能恢复的3种主要治疗手段:中医疗法、运动疗法以及药物疗法.最后对足球运动损伤后肌肉功能恢复手段的发展趋势做了进一步的探讨.