International Journal of Sports Science & Coaching最新文献_第9页

Elite athletes’ and support staffs’ experiences and perceptions of long-haul travel, and the self-management strategies they use 优秀运动员和后勤人员对长途旅行的体验和认知，以及他们使用的自我管理策略

International Journal of Sports Science & Coaching Pub Date : 2023-04-18 DOI: 10.1177/17479541231170080

A. Rossiter, T. Comyns, Ian Sherwin, Alan M. Nevill, G. Warrington

{"title":"Elite athletes’ and support staffs’ experiences and perceptions of long-haul travel, and the self-management strategies they use","authors":"A. Rossiter, T. Comyns, Ian Sherwin, Alan M. Nevill, G. Warrington","doi":"10.1177/17479541231170080","DOIUrl":"https://doi.org/10.1177/17479541231170080","url":null,"abstract":"Elite athletes and their support staff are often required to travel for international competitions all over the globe, however little is known about their experiences of long-haul (LH) travel and its perceived effects on performance. The aim of this study was to explore elite athletes’ and support staffs’ perception of symptoms experienced following LH travel and the self-management strategies they used to mitigate these symptoms. Elite athletes and support staff ( n = 88), who had embarked on an LH flight (> 8 hours) in the previous 2 years for training or competition, completed a survey examining their perceptions of LH travel, symptoms experienced following the flight(s) and strategies they implemented to minimise the symptoms. Associations between symptoms experienced and travel strategies used with participant and journey characteristics were examined by Chi-squared tests. LH travel was widely perceived by participants to be disruptive to physical (86.4%) and mental performance (72.7%) and to increase the risk of illness and injury (86.4%). The most common symptoms experienced were related to fatigue and disruption to sleep. All participants implemented strategies to help mitigate the negative consequences of LH travel. Moving and stretching regularly in-flight and simple strategies for aligning the body clock to destination time were most prevalent. The study findings will allow the translation of research to better inform future guidelines that address the unique needs and priorities of elite athletes and support staff as they embark on LH travel for training and competition with a view to optimising performance outcomes.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125763284","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

Subjective knowledge in open water activities: Scale development and validation 开放水域活动中的主观知识:规模发展和验证

International Journal of Sports Science & Coaching Pub Date : 2023-04-18 DOI: 10.1177/17479541231168513

Heetae Cho, K. Koh, Lit Khoon Chian

引用次数: 0

Case-study: Energy expenditure of a world class male wheelchair tennis player during training, Grand Slam and British open tournaments measured by doubly labelled water 案例研究:一位世界级男子轮椅网球运动员在训练、大满贯和英国公开赛期间用双标签水测量的能量消耗

International Journal of Sports Science & Coaching Pub Date : 2023-04-17 DOI: 10.1177/17479541231169033

Daniel G Ellis, J. Speakman, C. Hambly, Alex Cockram, J. Morton, Graeme L. Close, T. Donovan

{"title":"Case-study: Energy expenditure of a world class male wheelchair tennis player during training, Grand Slam and British open tournaments measured by doubly labelled water","authors":"Daniel G Ellis, J. Speakman, C. Hambly, Alex Cockram, J. Morton, Graeme L. Close, T. Donovan","doi":"10.1177/17479541231169033","DOIUrl":"https://doi.org/10.1177/17479541231169033","url":null,"abstract":"The assessment of total energy expenditure (TEE) is imperative to ensure appropriate fuelling during competition and training, although the current lack of TEE research in para sport make the prescription of nutritional strategies challenging. This study aimed to assess TEE of an elite wheelchair tennis (WT) player during training and competition of the highest level. One male WT player (age 23.6 years; career high World No. 1; body mass 65.7 kg; VO2max, 45.3 ml.kg−1.min−1) participated. Prior to the assessment, VO2max and maximum heart rate, resting metabolic rate, 10 m sprint speed and upper body skinfold measurements were made. Doubly labelled water assessed TEE during a 19-day period which included the Wimbledon Championships (5 days-3 matches), training (8 days) and the British Open (BO) (6 days-7 matches). Throughout data collection, the participant continued their usual training and preparation. During Wimbledon, TEE was 3118 kcal·d−1: 60.3 kcal·kg−1 FFM: PAL 2.0 and during BO was 3368 kcal·day−1: 65.1 kcal·kg−1 FFM: PAL 2.2. Mean daily activity was 124 mins and 132 mins, respectively. During training, TEE was 3177kcal·day-1: 61.4kcal·kg-1 FFM: PAL 2.0: mean daily activity was 138 mins. These findings show the TEE of an elite WT player captured during a period of training and high-level competition, alongside data outlining the physiological profile of a world-class para-athlete.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125527009","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

Analysis of the return in professional men's and women's padel 职业男式和女式的回报分析

International Journal of Sports Science & Coaching Pub Date : 2023-04-10 DOI: 10.1177/17479541231167752

A. Escudero-Tena, S. Ibáñez, Antonio Vaquer Castillo, B. Sánchez-Alcaraz, Jesús Ramón-Llín, D. Muñoz

{"title":"Analysis of the return in professional men's and women's padel","authors":"A. Escudero-Tena, S. Ibáñez, Antonio Vaquer Castillo, B. Sánchez-Alcaraz, Jesús Ramón-Llín, D. Muñoz","doi":"10.1177/17479541231167752","DOIUrl":"https://doi.org/10.1177/17479541231167752","url":null,"abstract":"The goal of this research was to analyze how situational variables such as the tactical position and the direction of the serve, the return's direction, and the score affect the vertical trajectory (VT) of the return (straight or lob) in men's and women's professional padel. For this, a sample of 2752 points (1431 men and 1321 women) corresponding to 69 matches played in the 2021 season of the World Padel Tour circuit was used. The VT of the return (straight or lob), to which player it was oriented, how important the point was attending to the score, the tactical position of the serving players, and the direction of the serve by systematic observation were recorded. The results showed that situational variables had a significant influence on the type of vertical return trajectory. Men performed a significantly higher percentage of straight returns (three out of four returns) when returning to the player at serve, or at a nonkey moment, or Australian position, or when the serve was to the body or to the side wall. In contrast, women returned a significantly higher percentage of lob returns (three out of four returns) to the server's partner, or in golden point situations, or in serves to the “T” and to the body, regardless of the tactical position at serve. The return had not been analyzed considering the score, observing changes in the golden points. These results have a great impact both on carrying out specific return training and on improving pair's anticipation to serve in different return situations.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127771840","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

Hormonal contraceptive use, menstrual cycle characteristics and training/nutrition related profiles of elite, sub-elite and amateur athletes and exercisers: One size is unlikely to fit all 精英、次精英和业余运动员和锻炼者的激素避孕药使用、月经周期特征和训练/营养相关概况:一个标准不可能适合所有人

International Journal of Sports Science & Coaching Pub Date : 2023-04-10 DOI: 10.1177/17479541231163088

{"title":"Hormonal contraceptive use, menstrual cycle characteristics and training/nutrition related profiles of elite, sub-elite and amateur athletes and exercisers: One size is unlikely to fit all","authors":"","doi":"10.1177/17479541231163088","DOIUrl":"https://doi.org/10.1177/17479541231163088","url":null,"abstract":"The aim of the present study was to simultaneously audit hormonal contraceptive (HC) use, menstrual cycle characteristics and training/nutrition related profiles in pre-menopausal women from varying athletic and exercise backgrounds. Elite ( n = 51), sub-elite ( n = 118) and amateur ( n = 392) female athletes and exercisers were examined via an anonymous quantitative/qualitative survey tool. All analyses for ratio data were conducted utilising one- and two-way ANOVA/ANCOVA and odds ratio models, with ordinal data analysed via Pearson's Chi-squared tests. HC use was similar across elite, sub-elite and amateurs (34–44%). Menstrual cycle length was not different ( P = 0.08) between competitive levels (28 ± 13 days), but 66% of respondents reported cycle variability (10 ± 11 days). Training profiles were not different based on contraceptive status ( P > 0.05) yet were across competitive groups ( P < 0.05). Daily meal/snack intakes were not different between contraceptive status ( P > 0.05), though elite and sub-elite groups reported a higher daily meal consumption compared to amateurs ( P < 0.01). Forty percent of all respondents skipped meals, attributed to lack of time, schedule and alterations in appetite, with reported changes in taste preferences during pre-menses (14–35%) and menses (15–25%) towards sweet foods (60%), with cravings for chocolate and other confectionary (25%). Prevalence of dietary supplement use was not influenced by contraceptive status ( P = 0.31), though elites (76%) reported higher use ( P = 0.04) than amateurs (63%). Data demonstrates that in female athletes and exercisers, competitive level appears to affect simple markers of training and nutrition practice, yet contraceptive status does not.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126753010","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

Running more than before? The evolution of running load demands in the English Premier League 比以前跑得更多?英超联赛中跑动负荷需求的演变

International Journal of Sports Science & Coaching Pub Date : 2023-04-03 DOI: 10.1177/17479541231164507

T. Allen, M. Taberner, M. Zhilkin, D. Rhodes

{"title":"Running more than before? The evolution of running load demands in the English Premier League","authors":"T. Allen, M. Taberner, M. Zhilkin, D. Rhodes","doi":"10.1177/17479541231164507","DOIUrl":"https://doi.org/10.1177/17479541231164507","url":null,"abstract":"The purpose of this study was to assess running load trends (total distance (TD), high-intensity distance (HID; > 5.5ms−1) and sprinting distance (SprD; > 7ms−1)) in the English Premier League (EPL) between the 2014/2015 and 2018/2019 seasons using a semi-automated optical tracking system. A total of 1634 games across 5 seasons (2014/2015–2018/2019) were analysed for team and positional TD, HID and SprD. All matches were tracked using TRACAB® Gen-4 HD motion cameras. Data were analysed to identify significant team and positional differences for each metric. Small to moderate increases were seen in team running load for TD ( p = 0.02; effect size (ES): 0.21), HID ( p < 0.001; ES: 0.88) and SprD ( p < 0.001; ES: 0.67) between 2014/2015 and 2018/2019. Positional analysis showed significant increases in TD for all except for defensive midfielders (DM), attacking midfielders (AM) and wide midfielders (WM) ( p < 0.001–0.009; ES: 0.14–0.36); HID for all positions excluding goalkeepers (GK) ( p < 0.001–0.007; ES: 0.2–0.54) and SprD for all positions except for GK, central midfielders (CM) and AM, ( p < 0.001–0.020; ES: 0.19–0.39). Trivial to small differences were seen in season-to-season comparisons for TD ( p < 0.001–0.023; ES: −0.16–0.52), HID ( p < 0.001–0.033; ES: 0.10–0.38) and SprD ( p < 0.001–0.025; ES: 0.13–0.27) for both team and positional differences. Small to moderate increases in team TD, HID and SprD occurred in the EPL between 2014/2015 and 2018/2019, with trivial to small changes in season-to-season variations. Actual changes in running load over time appear to be dependent on playing position. Running load trends should be updated regularly and practitioners should be aware of the variability within their team, and programme accordingly.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129036622","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: 3

Additional substitutions in elite European football 欧洲精英足球的额外换人

International Journal of Sports Science & Coaching Pub Date : 2023-03-30 DOI: 10.1177/17479541231164090

Johannes Meyer, Stefanie Klatt

{"title":"Additional substitutions in elite European football","authors":"Johannes Meyer, Stefanie Klatt","doi":"10.1177/17479541231164090","DOIUrl":"https://doi.org/10.1177/17479541231164090","url":null,"abstract":"In 2020, the International Football Association Board (IFAB) introduced a temporary rule amendment of two additional substitutions in regular time. In this study, we assess the impact of this rule change with regard to player relief, tactical influence by the coaches and the development of young players. Data were collected from 3652 matches from the top 5 leagues in the Union of European Football Associations (UEFA) rankings and 659 UEFA club competition matches (Champions League and Europa League) in 2 different seasons (pre-rule amendment: 2018/2019 vs. post-rule amendment: 2020/2021), comparing leagues that introduced two additional substitutions with those that did not. The results show that with two additional substitutions, the reduction in player load was increased by 46%. Despite being used infrequently, the rule change resulted in 45% more substitutions and, therefore, greater tactical influence by the coaches. Furthermore, two additional substitutions benefit young players’ development with an 81% increase in playing time. While the aim of the temporary amendment to the laws of the game was achieved with the additional substitutions by compensating for the increased load on the players, coaches’ substitution behaviour shows potential for improvement.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132482404","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

Not much “I” in “Team”: Content analysis of pregame speeches in American football “团队”中没有多少“我”:美式橄榄球赛前演讲内容分析

International Journal of Sports Science & Coaching Pub Date : 2023-03-28 DOI: 10.1177/17479541231165135

Phil Havira, B. Brewer, J. V. Van Raalte, Donovan Jennison, Thaddeus J. France

{"title":"Not much “I” in “Team”: Content analysis of pregame speeches in American football","authors":"Phil Havira, B. Brewer, J. V. Van Raalte, Donovan Jennison, Thaddeus J. France","doi":"10.1177/17479541231165135","DOIUrl":"https://doi.org/10.1177/17479541231165135","url":null,"abstract":"Although researchers have explored the effects of coach pregame speeches, little is known about the actual content, delivery, and environmental context of the speeches themselves. This study was a descriptive analysis of 127 ( n = 77 intercollegiate, n = 37 high school, and n = 13 cinematic) American football pregame speeches. The speeches were viewed, transcribed, coded, and analyzed via the Linguistic Inquiry and Word Count (LIWC2015) software program. Actual speeches were compared with natural speech norms and speeches appearing in movies pertaining to American football. In general, the pregame speeches were characterized by use of confident, analytical, motivational, emotionally tinged language that is collectively oriented and present and future focused. The speeches delivered to high school teams were substantially similar to those delivered to intercollegiate teams. The actual speeches differed from natural speech on numerous variables and from the cinematic speeches on some descriptive variables. The findings suggest that actual American football pregame speeches are fundamentally similar to cinematic American football pregame speeches and constitute a distinct form of communication that is tailored to the unique demands of the situation.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128662265","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

Scientific mapping of the state-of-the-art in padel. A bibliometric analysis 最先进技术的科学制图。文献计量学分析

International Journal of Sports Science & Coaching Pub Date : 2023-03-27 DOI: 10.1177/17479541231161993

Á. Denche-Zamorano, A. Escudero-Tena, D. Pereira-Payo, J. Adsuar, D. Muñoz

{"title":"Scientific mapping of the state-of-the-art in padel. A bibliometric analysis","authors":"Á. Denche-Zamorano, A. Escudero-Tena, D. Pereira-Payo, J. Adsuar, D. Muñoz","doi":"10.1177/17479541231161993","DOIUrl":"https://doi.org/10.1177/17479541231161993","url":null,"abstract":"Padel has become one of the most popular racket sports in the world, capturing the interest of researchers and thus increasing the number of manuscripts that revolve around this sport. This article describes the state of development of the science of padel and locates the most relevant journals, authors, institutions, countries and keywords on the subject. The set of publications related to padel was retrieved from the main collection of the Web of Science. The state of development of padel in science was verified. Journals, authors, institutions, countries and keywords in the topic were analysed with the VOSviewer software. A total of 116 publications were analysed, finding that the publications on padel were in a phase of exponential growth. Sánchez-Alcaraz, Courel-Ibañez, Muñoz-Marín, Ramón-Llin and Sánchez-Pay were the most prominent authors, with the University of Murcia and Spain being the main institution and country on the subject. The science of padel is growing exponentially, with Spain being the driving force behind the topic of study, with new countries joining in recent years. This study provides relevant information on the state-of-the-art padel, and it will help researchers to establish new relationships and find more relevant authors and articles.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114887821","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

Efficacy beliefs and motivational dynamics in early-season collegiate swimming relays 大学生游泳接力赛季初的效能信念与动机动力

International Journal of Sports Science & Coaching Pub Date : 2023-03-22 DOI: 10.1177/17479541231165133

Seunghyun Hwang, Kaitlynn Sedabres, Lori Dithurbide, D. Feltz

{"title":"Efficacy beliefs and motivational dynamics in early-season collegiate swimming relays","authors":"Seunghyun Hwang, Kaitlynn Sedabres, Lori Dithurbide, D. Feltz","doi":"10.1177/17479541231165133","DOIUrl":"https://doi.org/10.1177/17479541231165133","url":null,"abstract":"This study examined the moderating effects of efficacy beliefs and perceived indispensability on individual efforts in early-season collegiate swimming relays. Effort changes from swimmers’ individual best times to relay-leg times were compared as a function of relay members’ relative strength (i.e., fastest or slowest) and serial position (i.e., first or last leg). Participants ( N = 199) were collegiate swimmers in 200, 400, or 800-yard freestyle relays at fall invitational meets providing 260 cases included for analysis. Individual lifetime best times, adjusted relay times, rank, serial position, and self-report measures (i.e., efficacy, perceived indispensability of their relay performance) were used for hierarchical multiple regressions. Results indicated that the slowest relay members came closer to their individual best times compared with their team members. The fastest members showed less effort change toward their individual best times than their team members. However, efficacy beliefs in one's teammates had a small positive moderating influence on the fastest members’ effort in relay performances. Based on our results, we recommend Division II and III collegiate coaches not be too concerned with positional order by particular rank at early season invitationals; instead, focus on how to obtain the most effort from each relay member. However, the slowest swimmers may perform better if not positioned first.","PeriodicalId":182483,"journal":{"name":"International Journal of Sports Science & Coaching","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128740843","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

International Journal of Sports Science &amp; Coaching最新文献

International Journal of Sports Science & Coaching最新文献