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Biomechanical Analysis of Mawashi-Geri in Technique in Karate: Review Article 空手道技术中Mawashi-Geri的生物力学分析综述
Pub Date : 2018-10-15 DOI: 10.5812/INTJSSH.84349
S. Hariri, H. Sadeghi
Mawashi-Geri Jodan technique (circular kicking to the opponent’s head), is one of the most commonly used techniquesin the Karate, especially in the combat style. Although the speed of the implementation of the technique plays an important role in gaining points, there is no specific pattern for optimal performance of the technique. In this research, it was aimed at reviewing the results of the previous research that has been conducted on the effective issues relating to the success of this technique performance. The related articles were searched in ScienceDirect, PubMed, Google Scholar by considering the words like Karate, biomechanics, kinetic and kinetic analysis, EMG of Mawashi-Geri and EMG of kick. In the years ranging from 2000 to 2018, the findings of the research showed that the quadriceps muscles, especially rectus femoris muscle, played a major role in the efficacy of technique performance. Keeping the knee upward while rotating the body, the technique will be performed faster due to closer distance toward the opponent. Therefore, Karate player can obtain the required score more easily and quickly. It seems that the use of this pattern will be effective in performing the technique of Mawashi-Geri in Karate.
Mawashi-Geri乔丹技术(圆形踢对手的头),是空手道最常用的技术之一,特别是在战斗风格。虽然该技术的实现速度在得分中起着重要作用,但该技术的最佳性能没有特定的模式。在这项研究中,它的目的是回顾以往的研究结果,已经进行了有效的问题,有关这一技术性能的成功。根据空手道、生物力学、动力学与动力学分析、Mawashi-Geri肌电图、踢腿肌电图等关键词,在ScienceDirect、PubMed、Google Scholar中检索相关文章。从2000年到2018年,研究结果表明,股四头肌,尤其是股直肌,在技术表现的有效性中发挥了重要作用。在旋转身体的同时保持膝盖向上,由于与对手的距离更近,该技术将执行得更快。因此,空手道选手可以更容易,更快速地获得所需的分数。看来,使用这种模式将有效地执行空手道的Mawashi-Geri技术。
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引用次数: 5
Evolution of Dietary Intake Between Before, During and After Ramadan Observance in Tunisian Physically Active Men: A Systematic Review 突尼斯运动男性斋月前、期间和之后饮食摄入的演变:一项系统综述
Pub Date : 2018-09-12 DOI: 10.5812/INTJSSH.83782
O. Boukhris, K. Trabelsi, H. Chtourou
Objective: The present review was designed to systematize the literature on the evolution of dietary intake in Tunisian physically active subjects (i.e., physically active men and physical education students) between before, during and after Ramadan observance. Evidence Acquisition: Two electronic databases, PubMed and Science direct, were searched using a comprehensive strategy. Studies published prior to August 2018 were included if they assessed dietary intake during Ramadan in Tunisian physically active subjects. A narrative synthesis of findings was conducted. Results: Nine studies evaluated the dietary intake change between before, during and after Ramadan observance. Energy intake decreased in three studies and did not change in six studies. One study showed decreases in fat intake during Ramadan, two studies reported increases and six studies did not report significant changes. Protein intake decreased in three studies, increased in one study and did not change in five studies. Carbohydrate intake did not change in six studies and increased in three studies. Total water intake decreased in four studies and did not change in one study. Conclusions: The literature does not support that Ramadan fasting had adverse effect on dietary intake.
目的:本综述旨在系统整理突尼斯体力活动者(即体力活动者和体育学生)在斋月之前、期间和之后的饮食摄入演变的文献。证据获取:使用综合策略对PubMed和Science direct两个电子数据库进行检索。2018年8月之前发表的研究,如果评估了突尼斯身体活跃的受试者在斋月期间的饮食摄入量,则纳入其中。对调查结果进行了叙述综合。结果:9项研究评估了斋月之前、期间和之后的饮食摄入变化。三项研究的能量摄入减少,六项研究没有变化。一项研究显示斋月期间脂肪摄入量减少,两项研究报告增加,六项研究没有报告显著变化。蛋白质摄入量在三项研究中减少,在一项研究中增加,在五项研究中没有变化。6项研究中碳水化合物摄入量没有变化,3项研究中碳水化合物摄入量增加。四项研究中总饮水量减少,一项研究没有变化。结论:文献不支持斋月禁食对饮食摄入有不利影响。
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引用次数: 14
Psychophysiological Responses to Cognitive and Physical Training in Obese Elderly 肥胖老年人对认知和体能训练的心理生理反应
Pub Date : 2018-09-12 DOI: 10.5812/INTJSSH.83935
Nooshin Naghavi, M. Taheri, K. Irandoust
Objectives: Increasingprevalencerateof anxietydisordersinelderlypopulationsespeciallyduetophysicallimitationshasbecome a key concern for health authorities. Therefore, the objective of the study was to investigate the effects of cognitive and physical training on anxiety in the Elderly. Methods: 49 aged females (62.3 ± 2.6 years) with BMI of 35 - 49.99 kg/m 2 were assigned to one of three groups: Cognitive (n = 17), yoga (n = 16) and control group (n = 16). The cognitive training protocol focusing on breathing techniques, autogenic training, im-agery/visualization, included an 8-week period, three sessions a week. Yoga practices comprising Asana training, Pranaya training, and meditation were conducted 3 times a week, for 8 weeks. The State-Trait Anxiety Inventory was given before yoga practice and cognitivetraining. Biofeedbackdeviceswereusedtomonitorgalvanicskinresistanceandrestingheartrate. Thedatawereanalyzed using independent t -test and one-way ANOVA test. Results: The results indicated that both cognitive and physical training had a significant difference on Anxiety in the training groups(P ≤ 0.05),whilenosignificantchangewasfoundforcontrolgroup(P ≥ 0.05). Furthermore,bothtrainingmodesdecreased the skin potential response (SPR) (P < 0.001). In addition, physical training group had lower resting heart rate after intervention comparedtothecognitiveandcontrolgroups(respectively,P=0.04andP=0.001)lowerheartrateandskinconductancelevelover the entire measurement period. Conclusions: It was concluded that the health benefits of yoga aren’t not specific to maintaining physical health, but also extends to lowering the anxiety in elderly with obesity. It was also suggested that cognitive training can mitigate the anxiety symptoms in the elderly while no physical changes were shown in cognitive training. studystrategypredominantlyincludedconsideringtheef-fect of either cognitive (mental or physical training (yoga) on anxiety and biofeedback responses (resting heart and skin resistance) in obese elderly females.
目的:焦虑症在老年人群中,特别是由于身体限制而日益普遍,已成为卫生当局关注的一个关键问题。因此,本研究的目的是探讨认知和体能训练对老年人焦虑的影响。方法:49名年龄在62.3±2.6岁,体重指数在35 ~ 49.99 kg/ m2之间的女性分为认知组(n = 17)、瑜伽组(n = 16)和对照组(n = 16)。认知训练方案侧重于呼吸技巧、自体训练、图像/可视化,包括8周的时间,每周三次。瑜伽练习包括体式训练、调息训练和冥想,每周进行3次,持续8周。在瑜伽练习和认知训练前进行状态-特质焦虑量表。Biofeedbackdeviceswereusedtomonitorgalvanicskinresistanceandrestingheartrate。采用独立t检验和单因素方差分析对数据进行分析。结果:认知训练组和体能训练组对焦虑的影响差异有统计学意义(P≤0.05),对照组差异无统计学意义(P≥0.05)。此外,两种训练模式都降低了皮肤电位反应(SPR) (P < 0.001)。此外,与认知组和对照组相比,体能训练组在干预后的静息心率更低(P=0.04和P=0.001),整个测量期间的心率和皮肤电导水平也更低。结论:该研究得出的结论是,瑜伽的健康益处不仅限于保持身体健康,还可以降低肥胖老年人的焦虑情绪。认知训练可以减轻老年人的焦虑症状,而认知训练没有表现出身体上的变化。研究策略主要包括考虑认知(心理或身体训练(瑜伽)对肥胖老年女性焦虑和生物反馈反应(静息心脏和皮肤阻力)的影响。
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引用次数: 13
Effects of Practicing Physical Activity During Ramadan Fasting on Health-Related Indices: An Updated Brief Review 斋月禁食期间体育锻炼对健康相关指标的影响:一项最新的简要综述
Pub Date : 2018-09-10 DOI: 10.5812/INTJSSH.83789
K. Trabelsi, W. Moalla, O. Boukhris, A. Ammar, Kais Elabed, A. Hakim, H. Chtourou
Based on Moon observation, every year, adults healthy Muslims practiced Ramadan intermittent fasting (RIF) for 29 or 30 consecutive days. During RIF Muslims are allowed to food and fluid intake only during night (from sunset to sunrise). Thus, behavioral changes are observed during RIF (e.g., food and sleep habits). Despite these changes, many healthy Muslims maintain their normal habitual physical exercise practice during RIF. However, changes in blood lipids, metabolic markers, electrolytes and hematological parameters during RIF in practitioners of physical activity are yet poorly studied. Therefore, the present review article will summarize the health specific effects of RIF in subjects engaged in physical training during Ramadan.
根据穆恩的观察,每年,健康的成年穆斯林都会连续29天或30天进行斋月间歇性禁食(RIF)。在RIF期间,穆斯林只允许在夜间(从日落到日出)摄入食物和液体。因此,在RIF期间观察到行为变化(例如,饮食和睡眠习惯)。尽管有这些变化,许多健康的穆斯林在斋戒期间仍保持正常的习惯性体育锻炼。然而,体育锻炼从业者在RIF期间血脂、代谢标志物、电解质和血液学参数的变化尚不清楚。因此,本综述将总结斋月期间进行体育锻炼的受试者中RIF的健康特异性效果。
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引用次数: 11
Reliability and Validity of a New Fitness Intermittent Judo Test 一种新的柔道体能间歇测试的信度和效度
Pub Date : 2018-09-08 DOI: 10.5812/INTJSSH.83385
M. Fessi, S. Nouira, Faiçal Farhat, H. Chtourou, S. Ahmaidi, W. Moalla
Objectives: The aim of this study was to assess the validity and the reliability of a new fitness intermittent judo test using the basic movement patterns of judo. Methods: Forty-one national level judo male athletes participated in this study. Eighteen judokas performed the intermittent judo fitness test consisting of 10 × 30 s maximal interspersed with 15 second rest, the Australian shuttle test, the special judo fitness test and a judo fight. Twenty three judokas performed twice the intermittent judo fitness test on different days. Results: The results showed significant correlations between the biggest number of Uchi-komi during the intermittent judo fitness test (Uchi-komibest), the longest distance covered during Australian shuttle test and the total projection in the special judo fitness test (P 0.90). The smallest worthwhile change showed that a change of 2 and 4 Uchi-komi in Uchi-komibest and Uchi-komiTot respectively is occurred. Conclusions: The new fitness intermittent judo test is both valid and reliable measurement tool to assess judokas’ fitness at the basic judo movement patterns.
目的:本研究的目的是评估一种新的柔道健身间歇测试的效度和信度,该测试采用柔道的基本动作模式。方法:选取41名国家级男子柔道运动员为研究对象。18名柔道运动员进行了10 × 30秒最大动作+ 15秒休息的间歇柔道体能测试、澳大利亚穿梭测试、柔道专项体能测试和柔道格斗。23名柔道运动员在不同的日子进行两次间歇柔道体能测试。结果:间歇柔道体能测试(Uchi-komibest)中最大Uchi-komi数与澳式穿梭测试中最远距离与柔道专项体能测试中总投射量呈显著相关(P = 0.90)。最小值变化表明,在Uchi-komibest和Uchi-komiTot分别发生了2和4个Uchi-komi的变化。结论:新的柔道体能间歇性测验是评价柔道运动员在柔道基本动作模式下体能状况的有效、可靠的测量工具。
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引用次数: 1
Effect of 8-Week Resistance Training with Creatine Supplementation on Body Composition and Physical Fitness Indexes in Male Futsal Players 补充肌酸8周抗阻训练对男子五人制足球运动员身体组成和体能指标的影响
Pub Date : 2018-09-04 DOI: 10.5812/INTJSSH.83810
R. Amirsasan, M. Nabilpour, Hasan Pourraze, D. Curby
Objectives: The aim of this study was to determine the effect of 8 weeks resistance training with creatine supplementation on body composition and physical fitness indexes in male futsal players. Methods: 20 trained futsal players were selected based on convenience sampling from East Azerbaijan and assigned randomly either to Ex + Cr group (Exercise + Creatin, n = 10) or Ex + Pl group (Exercise + Placebo, n = 10). All of the subjects performed resistance training program for 8 weeks. The Ex + Cr group ingested 0.3 g/kg creatine during loading phase 0.1 g/kg in maintenance phase. Body weight, fat free mass, fat percent, muscular strength, speed, anaerobic power and flexibility were measured before and after training program. Paired t-test and independent t-test were used to analyze the data. Results: The results suggested that body weight and fat free mass were significantly increased in both groups with greater improvements in Ex + Cr group (P ≤ 0.05). Moreover, Ex + Cr group demonstrated greater decrease in fat percent compared with Ex + Pl group (P ≤ 0.05). Also, muscular strength increased to a greater extent in the Ex + Cr compared with the Ex + Pl group (P ≤ 0.05). Finally, there was no significant difference between the two groups in speed, anaerobic power and flexibility (P ≥ 0.05). Conclusions: In general, it seems that resistance training along with creatine supplementation lead to greater increases in body weight, fat mass and muscular strength as well as greater decrease in fat percent than resistance training alone in trained futsal players.
目的:本研究的目的是确定8周补充肌酸的抗阻训练对男子五人制足球运动员身体组成和体能指标的影响。方法:采用方便抽样的方法,从东阿塞拜疆抽取20名训练有素的五人制足球运动员,随机分为Ex + Cr组(运动+创造,n = 10)和Ex + Pl组(运动+安慰剂,n = 10)。所有受试者均进行了为期8周的阻力训练。Ex + Cr组在加载期摄入0.3 g/kg肌酸,维持期摄入0.1 g/kg肌酸。在训练前后测量体重、无脂量、脂肪率、肌肉力量、速度、无氧能力和柔韧性。采用配对t检验和独立t检验对数据进行分析。结果:两组大鼠体重和无脂质量均显著升高,其中Ex + Cr组改善幅度更大(P≤0.05)。与Ex + Pl组相比,Ex + Cr组脂肪率降低幅度更大(P≤0.05)。与Ex + Pl组相比,Ex + Cr组肌肉力量增加幅度更大(P≤0.05)。最后,两组在速度、无氧功率和柔韧性方面差异无统计学意义(P≥0.05)。结论:总的来说,在训练有素的五人制足球运动员中,抗阻训练与补充肌酸相比,似乎会导致体重、脂肪量和肌肉力量的更大增加,以及脂肪百分比的更大下降。
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引用次数: 11
Effect of Distance Increase of External Focus of Attention on Tracking Task Learning Under Secondary Task Condition 次要任务条件下外部注意焦点距离增加对跟踪任务学习的影响
Pub Date : 2018-07-23 DOI: 10.5812/INTJSSH.82043
Omid Ansari, Mahshid Zarezade, A. S. Kakhaki
ObjectivesNumerous studies have demonstrated that using an external focus of attention significantly enhances motor skill performance. However, limited research has been carried out on increasing the distance of an external focus of attention. Therefore, the main purpose of the present study is to determine whether learning tracking task is affected by different attentional focuses.MethodsA sample of 42 participants, after taking a pre-test, were divided randomly into three groups, including distal external group (DEG), proximal external group (PEG), and control group (COG). Proximal external focus group received instructions concerning near body movements; distal external focus group received instructions on the effect of movements in the environment, and control group did not receive any instructions. The participants practiced the tracking task in four blocks of four trials under their own condition of attention. Then, after 48 hours, they participated in a delay retention test under secondary task condition (auditory).ResultsThe results indicated that distal external focus group learned the tracking task better than proximal external focus group (P > 0.05), however, control group learned the tracking task less effectively than the other groups.ConclusionsThese findings suggest that increasing the distance of an external focus of attention improves tracking task learning, especially under secondary task, because secondary task condition enhances attention resources and shifts focus of attention to the external environment.
目的大量研究表明,使用外部注意力焦点可以显著提高运动技能的表现。然而,关于增加外部注意焦点距离的研究有限。因此,本研究的主要目的是确定学习跟踪任务是否受到不同注意焦点的影响。方法42例受试者经预试后,随机分为外置远端组(DEG)、外置近端组(PEG)和对照组(COG)。近端外部焦点组接受有关近身运动的指示;远端外焦点组接受环境运动效果指导,对照组不接受任何指导。参与者在自己的注意力条件下,分四组四次练习跟踪任务。然后,在48小时后,他们参加了次要任务条件下(听觉)的延迟记忆测试。结果远端外部焦点组对跟踪任务的学习效果优于近端外部焦点组(P > 0.05),而对照组对跟踪任务的学习效果低于其他组。结论增加外部注意焦点的距离可以改善跟踪任务学习,特别是次要任务,因为次要任务条件增加了注意资源,将注意焦点转移到外部环境。
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引用次数: 2
Effect of Peripheral Heart Action on Body Composition and Blood Pressure in Women with High Blood Pressure 外周心脏活动对高血压女性身体成分和血压的影响
Pub Date : 2018-07-22 DOI: 10.5812/INTJSSH.81874
M. Nabilpour, J. Mayhew
ObjectivesExercise is non-medical treatment and low-risk strategy for people with hypertension. Therefore, the aim of this study was to evaluate the effect of peripheral heart action (PHA) on body composition and blood pressure in women with high blood pressure.MethodsTwenty women (age = 38 - 46 years, BMI = 21 - 31 kg/m2) who had high blood pressure (135/88 mm Hg) volunteered to participate. Ten were randomly selected and submitted to 32 PHA exercise sessions. The remaining 10 participants served as a non-exercise control group. Systolic (SBP) and diastolic blood pressure (DBP), skinfold, and 1RM tests of maximum strength were determined before and after 36 exercise sessions.ResultsSBP and DBP were decreased significantly (P < 0.05) in the PHA group but not in the non-exercise control group. Furthermore, the training group made significant improvements in test of one-repetition maximum and body composition compared to the control group (P < 0.05).ConclusionsResistance exercises using the PHA approach can be considered as a low-risk treatment for people with high blood pressure in order to improve blood pressure, increase muscular strength, and enhance overall fitness.
目的:运动是高血压患者的非药物治疗和低风险策略。因此,本研究的目的是评估外周心脏作用(PHA)对高血压女性身体成分和血压的影响。方法20例高血压(135/88 mm Hg)女性(年龄38 ~ 46岁,BMI = 21 ~ 31 kg/m2)自愿参加。其中10人被随机选中,进行32次PHA训练。其余10名参与者作为不运动的对照组。在36次运动前后测定收缩压(SBP)和舒张压(DBP)、皮褶和最大强度1RM试验。结果PHA组血压、舒张压明显降低(P < 0.05),非运动对照组无明显差异。训练组在单次最大重复数和体成分测试上较对照组有显著提高(P < 0.05)。结论采用PHA方法进行阻力运动可作为高血压患者的一种低风险治疗方法,以改善血压,增加肌肉力量,提高整体健康水平。
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引用次数: 14
期刊
International Journal of Sport Studies for Health
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