Journal of athletic enhancement最新文献_第4页

Acute Effects of a Resistance Tubing Training Device on Baseball Swing Kinematics 阻力管训练装置对棒球挥拍运动的急性影响

Journal of athletic enhancement Pub Date : 2018-10-25 DOI: 10.4172/2324-9080.1000301

Barfield Jw, Oliver Gd

{"title":"Acute Effects of a Resistance Tubing Training Device on Baseball Swing Kinematics","authors":"Barfield Jw, Oliver Gd","doi":"10.4172/2324-9080.1000301","DOIUrl":"https://doi.org/10.4172/2324-9080.1000301","url":null,"abstract":"Objective: The purpose of this study was to assess the acute kinematic changes that occur on the youth baseball swing following use of a resistance tubing training device. \u0000Methods: Kinematic data were collected on 10 subjects (13.2 ±1.9 years of age; 161.8 ±17.4 cm; 54.4 ±15.9 kg) at 240 Hz using Flock of Birds electromagnetic tracking system (TrackSTAR™, Ascension Technologies Inc., Burlington, VT., USA) synced with The MotionMonitor® (Innovative Sports Training, Chicago, IL., USA). Participants were required to hit 5 baseballs off of a tee with intention to hit line drives up the middle. At the completion of a three-minute rest, the participants were equipped with the resistance tubing training device and asked to perform 20 low effort dry swings. Subjects were then asked to hit 5 baseballs off a tee while wearing a resistance tubing training device and then 5 more off the tee without wearing a resistance tubing training device. Data were analyzed for the pre-device and post-device hits. \u0000Results: A repeated-measures multivariate analysis of variance revealed no significant differences pre-resistance and post-resistance tubing training device for center of mass over base of support (COM over BOS) or segmental velocities (Λ=0.68, F4,6=0.72, p=0.608). Conclusion: The absence of a significant decrease in segmental velocities could expose a resistance tubing training device as an appropriate warm-up tool and beneficial training aid. Because the resistance tubing training device is not detrimental to segmental velocities in the acute sense, it should be considered a practical sport-specific training aid.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"10 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90453419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Is Living Altitude a Determinant of Ski-Mountaineering Performance? An Analysis from the Patrouille Des Glaciers 生活海拔是滑雪-登山运动成绩的决定因素吗?冰川巡逻队的分析

Journal of athletic enhancement Pub Date : 2018-10-25 DOI: 10.4172/2324-9080.1000300

G. Ba

{"title":"Is Living Altitude a Determinant of Ski-Mountaineering Performance? An Analysis from the Patrouille Des Glaciers","authors":"G. Ba","doi":"10.4172/2324-9080.1000300","DOIUrl":"https://doi.org/10.4172/2324-9080.1000300","url":null,"abstract":"Analyses of parameters of habitat such as altitude and their effects on performance are scant. Therefore, the aim of the present study was to investigate the relevance of altitude of the habitual place of abode for course times of alpinists in one of the largest backcountry skiing races in the Swiss West Alps: “Patrouille des Glaciers” (PDG) from Zermatt and Arolla to Verbier. Therefore course times and altitudes of the habitual place of abode of 1569 male and 240 female alpinists participating in the PDG in the years 2004, 2006, 2008, 2010, 2014 were analyzed. Results revealed that an increase in elevation of about 1000 m (e.g. from 500 to 1500 m above sea level) lead to a decrease in course time of around 80 minutes. Findings can be explained by the effects of reduced oxygen partial pressure at higher altitudes, respectively hypoxia, through induction of several physiological changes in the alpinists’ bodies. Alpinists primarily living at higher altitude are therefore better acclimatized and thus prepared for the race; hence adequate acclimatization is paramount not only for improving course time but also for staying safe whilst participating in the PDG.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"71 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91129305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Olympic Moves Program, Around the World and In Japan: Current Status and Future Opportunities 世界和日本的奥林匹克运动项目:现状和未来机遇

Journal of athletic enhancement Pub Date : 2018-10-17 DOI: 10.4172/2324-9080.1000303

Tatsuo Yasumitsu, Yasuhiro Kudo, H. Nogawa

引用次数: 1

The Acute Effects of Self-Myofascial Release on Fatigue-Related Impairments of Muscular Performance 自我肌筋膜释放对疲劳相关肌肉功能障碍的急性影响

Journal of athletic enhancement Pub Date : 2018-10-17 DOI: 10.4172/2324-9080.1000299

E. Jo, Gabriela Juache, Desiree E. Saralegui, D. Weng, S. Falatoonzadeh

{"title":"The Acute Effects of Self-Myofascial Release on Fatigue-Related Impairments of Muscular Performance","authors":"E. Jo, Gabriela Juache, Desiree E. Saralegui, D. Weng, S. Falatoonzadeh","doi":"10.4172/2324-9080.1000299","DOIUrl":"https://doi.org/10.4172/2324-9080.1000299","url":null,"abstract":"Objective: The purpose of this study was to examine the effects of self-myofascial release (MFR) via foam rolling immediately following strenuous activity on acute fatiguerelated impairments of muscular performance. \u0000Methods: Healthy male (n=16) and female (n=9) subjects volunteered for this crossover design study. Subjects visited the laboratory three separate times. During visit 1, subjects were familiarized with performance testing procedures and the self-MFR foam rolling and fatigue protocols. For visits 2 and 3, subjects were first (T1) assessed for vertical jump height, velocity and power as well as dynamic reaction time (DRT). Subjects then performed the exercise fatigue protocol followed by either a self-MFR foam rolling treatment (MFR) or seated rest (CON). Immediately after, subjects repeated the performance tests (T2). \u0000Results: CON resulted in a significantly greater percent decline from T1-T2 for average power (p=0.03), average velocity (p=0.02) and peak power (p=0.03) than the MFR treatment. No between-treatment differences were detected for %Δ vertical jump height (p=0.14) or DRT (p=0.20). According to magnitude-based inference analysis, MFR is likely beneficial in attenuating fatigue-induced kinematic decrements (i.e. power and velocity). MFR is possibly beneficial with respect to mitigating acute fatigue-related impairment of jump height and dynamic reaction time. \u0000Conclusion: Results demonstrate the plausible short-term benefits of foam rolling on muscular performance decrements associated with acute muscular fatigue from exercise. Foam rolling following an exercise fatigue protocol blunted attenuation of movement velocity and power during a maximum vertical jump test but failed to alter decrements in direct performance outcomes (i.e. vertical jump height and DRT). Thus, a level of uncertainty remains with respect to the efficacy by which foam rolling blunts performance impairments provoked by strenuous exercise.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"18 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88911153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring of In-Season Salivary Alpha Amylase Trends for Professional Australian Rules Footballers 澳大利亚职业足球运动员赛季唾液α淀粉酶趋势监测

Journal of athletic enhancement Pub Date : 2018-08-13 DOI: 10.4172/2324-9080.1000295

S. Coad, Aaron D. Wellman, B. Gray, C. Mclellan

{"title":"Monitoring of In-Season Salivary Alpha Amylase Trends for Professional Australian Rules Footballers","authors":"S. Coad, Aaron D. Wellman, B. Gray, C. Mclellan","doi":"10.4172/2324-9080.1000295","DOIUrl":"https://doi.org/10.4172/2324-9080.1000295","url":null,"abstract":"Salivary Alpha Amylase has been considered a surrogate biomarker of autonomic nervous system, and may be considered useful to highlight periods of physiological fatigue in athletes. Novel lateral flow technology has allowed for rapid salivary assessment and offers an alternative practical method for monitoring salivary markers such as Alpha Amylase in AFL athletes throughout the in-season. Therefore, the present study aimed to (1) examine week-to-week and month-to-month variations in AFL athletes [sAA] throughout a 16 match period of the AFL in-season, and (2) examine the acute relationship between post-match measure of [sAA] and match-play exercise workloads. Twenty elite male Australian Rules Footballers (24.3 ± 4.2 years, 186.7 ± 7.3 cm, 87.6 ± 8.0 kg) were monitored throughout 16 in-season AFL matches for sAA taken 36-h post-match and exercise workloads (player load) using GPS IA. The present study utilized a linear mixed model analyses for time dependent changes in [sAA] and player load. A significant main effect was found for week-to-week analysis of 36-h post-match [sAA] (F (15, 36)=5.12, p<0.001) and for match-play player loads (F (15, 61)=2.33, p=0.011). Further a significant main effect (F (3 19)=11.88, p<0.001) was found for month-to-month changes in 36-h post-match [sAA]. Finally, high inter- (103%) and intra-subject (110 %) variation of [sAA] were found. The present study presents novel data of trends in 36-h post-match [sAA] for AFL athletes. Results demonstrated a significant changes in month-to-month 36-h post-match [sAA] peaking in the final month of the study. Month-to-month analysis of [sAA] may highlight an accumulative SNS fatigue effect throughout the AFL in-season, however results on a week-to-week basis need to be analysed with caution given the high levels of intra- and inter-subject variation.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"76 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76307097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Why Should Coaches Be Transformational and Servant Leaders and Use the Athlete First, Winning Second Coaches Philosophy? 为什么教练应该是变革型和服务型领导者，并采用运动员第一，获胜第二的教练理念?

Journal of athletic enhancement Pub Date : 2018-08-10 DOI: 10.4172/2324-9080.1000293

Sadrac Cherfils

引用次数: 0

The Different Point of View–A Visual-Spatial Taxonomy for Sports 不同的视角——体育运动的视觉空间分类

Journal of athletic enhancement Pub Date : 2018-08-07 DOI: 10.4172/2324-9080.1000294

S. Pietsch

引用次数: 6

The Effects of a Botanical Blend on Post-Exercise Mucosal Antimicrobial Proteins 植物混合物对运动后粘膜抗菌蛋白的影响

Journal of athletic enhancement Pub Date : 2018-07-25 DOI: 10.4172/2324-9080.1000304

D. Bellar, Randy A. Aldret, L. Judge

{"title":"The Effects of a Botanical Blend on Post-Exercise Mucosal Antimicrobial Proteins","authors":"D. Bellar, Randy A. Aldret, L. Judge","doi":"10.4172/2324-9080.1000304","DOIUrl":"https://doi.org/10.4172/2324-9080.1000304","url":null,"abstract":"Exercise is a stressor that is known to in some cases suppress antimicrobial protein levels, particularly secretory immunoglobulin type A (IgA). Athletes in the midst of in-season training often demonstrate declining levels of sIgA as well as increased risk for ailments such as upper respiratory tract infections. Therefore, it is important to investigate natural supplements that may enhance post exercise mucosal immune function. Methods: Twenty healthy college-aged males volunteered to participate in the present single blind, repeated measures study. Three treatments were administered (botanical spray, botanical drops, placebo) at the onset of 30 minutes of 80% VO2 max cycle ergometer exercise. Secretory IgA and Human Alpha Defensin were quantified in saliva samples 30 minutes and 90 minutes post exercise. Results: Analysis via repeated measures Anova revealed a significant treatment effect at 30 min (p=0.030) with post hoc testing revealing a difference between the botanical spray and placebo (p=0.027), but by 90 minutes there was no differences by treatment (p=0.758). There was no difference by treatment observed at either 30 or 90 minutes for human alpha defensin concentrations. Conclusions: Based upon these preliminary data, it appears that a single dose of the tested botanical blend delivered via mouth spray can increase sIgA, one of the primary anti-microbial proteins in the oral cavity, for a short time post exercise.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"129 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83977170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of Nutrient Intake between Japanese Female Elite and Collegiate Karate Players 日本优秀女空手道运动员与大学空手道运动员营养摄入的比较

Journal of athletic enhancement Pub Date : 2018-06-07 DOI: 10.4172/2324-9080.1000290

K. Oda, K. Miyahara, Kayoko Matsuo, K. Kawano, R. Kikuchi, K. Tai, K. Iide, Y. Yoshimura, H. Imamura

{"title":"Comparison of Nutrient Intake between Japanese Female Elite and Collegiate Karate Players","authors":"K. Oda, K. Miyahara, Kayoko Matsuo, K. Kawano, R. Kikuchi, K. Tai, K. Iide, Y. Yoshimura, H. Imamura","doi":"10.4172/2324-9080.1000290","DOIUrl":"https://doi.org/10.4172/2324-9080.1000290","url":null,"abstract":"Most published data on the physical and physiological profiles of karate athletes is based on studies of male athletes and data on female athletes is rare. The purposes of this study were: 1) to collect baseline data on nutrient intake in order to advise athletes regarding nutrition practices that may enhance performance, and 2) to compare nutrient intake of elite and collegiate karate athletes. Thirtyfive female black belt karate athletes volunteered to participate in this study. They were divided into 2 groups: 20 athletes who were members of the national team (elite athletes) and 15 collegiate karate athletes (collegiate athletes). The elite athletes showed significantly higher mean lean body mass and significantly lower body fat and fat mass than the collegiate athletes. The elite athletes showed significantly higher energy intake and more nutrient intakes than the collegiate athletes. There were no significant differences in diet compositions between the elite and collegiate athletes. The elite athletes showed all micronutrient intakes were above 100% of the Estimated Average Requirement (EAR) or Adequate Intake (AIs), whereas the collegiate athletes showed micronutrient intakes below 100% of the EAR or AIs for potassium, calcium, magnesium, phosphorus, iron, vitamins A and C. Thus, we advised collegiate athletes to consume adequate amounts of carbohydrates and protein. To attain these goals, it is desirable to increase the amount of meals by increasing the intake levels of grains, vegetables, fruit, milk and dairy products, lean meat and fish.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"69 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85882113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Basal Markers of Inflammation, Muscle Damage, and Performance during Five Weeks of Pre-Season Training in Elite Youth Rugby League Players 在五周的季前训练中，精英青少年橄榄球联盟球员的炎症、肌肉损伤和表现的基础标志物

Journal of athletic enhancement Pub Date : 2018-06-07 DOI: 10.4172/2324-9080.1000286

D. Ferris, T. Gabbett, C. Mclellan, C. Minahan

{"title":"Basal Markers of Inflammation, Muscle Damage, and Performance during Five Weeks of Pre-Season Training in Elite Youth Rugby League Players","authors":"D. Ferris, T. Gabbett, C. Mclellan, C. Minahan","doi":"10.4172/2324-9080.1000286","DOIUrl":"https://doi.org/10.4172/2324-9080.1000286","url":null,"abstract":"Objectives: this study examined changes in basal biochemical markers of immune function and muscle damage, as well as physical performance during a typical pre-season training block in preparation for the Australian national youth rugby league competition. \u0000Methods: twelve elite youth (i.e., 18-20 yrs.) rugby league players completed 5 weeks of physical training that included 10-12 sessions per week. Anthropometry, sprint speed, anaerobic power, leg power, upper- and lower-body strength were measured pre- and post-training. Venous blood was assessed for interleukin (IL-1b, IL- 10, IL-6, TNFα) and Creatine kinase (Ck) concentrations at weekly intervals. \u0000Results: IL-1b and IL-10 concentrations were reduced from baseline after three and four weeks, respectively whereas IL-6 and TNF-α concentrations did not change over the 5-week period. Ck was increased above baseline after three weeks of training and returned to baseline at 5 weeks. Maximal bench press, hack squat, bench pull, and skinfold thickness were all improved after the 5-week training period. \u0000Conclusion: Early increases in Ck may indicate muscle damage in response to an increased volume of physical activity or unaccustomed exercise, while a return to baseline Ck levels may indicate adaptation. Increases in muscle strength confirm positive muscle adaptation and the training resulted in a reduction in basal IL-10 and TNF alpha production which could be characteristics of normal training response. From a practical perspective, the program employed in this study provided a useful training plan to increase physical qualities, and adaptation to muscle damage.","PeriodicalId":90574,"journal":{"name":"Journal of athletic enhancement","volume":"18 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90458855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2