Central European Journal of Sport Sciences and Medicine

Introduction. The purpose of this study was to evaluate the time of covering a distance of 1000 m on a rowing ergometer by competitors of the Academic Sports Association of the Pomeranian Medical University and to relate the achieved results to the best results from the Polish Rowing Ergometer Academic Championships. Methods. 28 rowers were tested in the 1000 m "maximum" test (1000TM/t). In addition, correlations were sought between the time and power values obtained in the 1000 TM/t with the values of selected anthropometric indices (height and weight, body mass index BMI), hand grip strength, heart rate and body composition components (free fat mass FFM, skeletal muscle mass SMM). Results. The significant correlation between the time and power output in 1000TM/t and values of FFM, SMM, handgrip strength test as well as resting HR have been observed. Conclusion. The results obtained at 1000TM/t can be considered promising for the further training stage due to the fact that the study was conducted on a rowing ergometer under training conditions prior to a special training mesocycle shaping strength and speed, while the athletes competing at the event to which our results were related were in peak competitive performance.

Oliwer Huzarski

Waldemar Pluta

Anna Lubkowska

1,000-m Rowing Ergometer Time Trial Performance in Female and Male Collegiate Rowers

1000米划船测功仪时间试验在女性和男性大学生赛艇运动员中的表现

The aim of the present study was to examine how various playing positions and opponent team ranking affect the covered distances and the acceleration and decelerations profile of a team during 2018-19 Greek SuperLeague. StatSport GPS system recorded in match-play real-time both the players’ covered distances (m) and the number of acceleration/deceleration runs (n) in zones from 3 m/s2 to 10 m/s2. The descriptive statistics showed that the players’ mean covered distances were 10289 m per match. The MANOVA revealed significant differences of the players’ covered distances in all intensity zones in relation to their playing positions (F(12, 513.567)=41.862; p=0.000) and the opponent team ranking (F(3,189)=3.687; p=0.013). Furthermore, no significant interactions were observed between the playing positions and the opponent team ranking (F(12, 500.339)=1.149; p=0.318). Moreover, no significant differences were recorded regarding the opponent team ranking with the amount of accelerations (F(1,189)=0.501; p=0.480) and decelerations (F(1,189)=1.342; p=0.248). Summarizing, the current study showed the high-demanding competitive performance of midfielders, full backs and forwards regardless the standing of the opponent teams. Hence, the team’s training must include special stimuli of aerobic and high-intensity workouts according to the players’ playing positions in the match.

Michail Mitrotasios

Ioannis Ispyrlidis

Nikolaos Mantzouranis

Emmanuel Vassiliades

Vasilis Armatas

Position-specific Physical Performance of Professional Players during Full-Season Matches in a Greek Superleague Elite Team

希腊超级联赛精英球队职业球员在全赛季比赛中的位置特异性体能表现

Obesity and a lack of sufficient physical activity (PA) are recognized as risk factors for most civilization diseases, including cancer. This study synthesized the current evidence evaluating the relationship between excess body weight and prostate cancer (PCa) in the relation to the disease risk, progression, and mortality, and identifies biological plausibility of the association. We also estimated the importance of PA in intentional body weight loss. Several electronic major databases to identify eligible articles were searched until March 2022. A total 22 observational articles, the literature on the underlying biological mechanisms, and the crucial evidence of a role of PA in body weight maintenance and reduction were reviewed. The available knowledge suggests that association between body mass index and PCa is conflicting. However, the most research consistently shown that overweight/obesity was associated with higher risk of high-grade PCa and dying of PCa. Overweight/obesity can promote high-grade PCa through increased levels of secreted adipokines, increased formation of proinflammatory agents, and reduced concentration of adiponectin, among others. Being obese may by also linked with a higher risk of mortality. Exercise can decrease these health consequences related with obesity and may be effective in reduction of PCa-specific mortality, however, there are relative few studies on PA and PCa prevention among obese individuals.

Joanna Kruk

Joshua Bernstein

Basil H. Aboul-Enein

Obesity, Physical Activity and Prostate Cancer: An Overview

肥胖、体力活动与前列腺癌：概述

This study examined the relationship among sports participation, self-perception and gender role orientation of adolescent female students in Kwara State. Descriptive survey design was adopted for the study. 240 respondents were sampled from public secondary schools in Kwara State through simple random sampling technique; eight (8) public secondary schools were selected. Stratified and proportionate sampling techniques were used to select 20% of students by class. The research instrument was a self-structured close ended questionnaire. The data collection was conducted by the researcher and three (3) research assistants. Three null hypotheses were tested using Pearson’s Product Moment Correlation (PPMC) statistic at 0.05 alpha level. The findings revealed no significant relationship between self-perception and sports participation, there was significant relationship between gender role orientation and sports participation. Also, there was significant relationship between social interaction and sports participation among the adolescent female students. The study recommends that the concept of sports should be promoted among the students while female students should be given equal opportunity in sports as their male counterpart. Also all students should be encouraged to participate in sports in order to promote social relationship with other students.

Babatunde Samson Adebayo

Relationship among Sports Participation, Self-Perception and Gender Role Orientation of Adolescent Female Students in Kwara State, Nigeria

尼日利亚夸拉州青少年女学生体育参与、自我认知与性别角色取向之间的关系

The aim of the study was to assess the effect of cold water immersion on changes in blood lactate concentration during post-exercise recovery in swimmers subjected to2-minute exercise test (front crawl swimming movements) using a VASA Swim Ergometer, with the maximum arm speed movements, as during the freestyle technique. The study covered 11 professional swimmers of the MKP Szczecin club, tested twice with a two-week interval. Each participant performed an exercise test twice, once with a passive recovery period, and the second time with cold water immersion after exercise, as a method potentially supporting the post-exercise recovery process. Each time before the test, immediately after and at 3, 6 and 9 minutes after exercise, the concentration of lactate in the capillary blood was measured. Statistical analysis of the obtained results showed that cold water immersion applied immediately after exercise resulted in a faster reduction of lactate concentration. The conducted research confirms that cold water immersion used in post-exercise recovery may be an effective method of restoring optimal physical fitness as part of the training process.

Mateusz Kowalski

Cold Water Immersion as a Method Supporting Post-Exercise Recovery

冷水浸泡作为支持运动后恢复的方法

This study examined the effects of an on field combined strength/speed/soccer training program on the physical performance of 20 male adolescent (age: 14.0 ± 0.7 years) soccer players, who were divided into an experimental and a control group (EG, CG). The EG players wore "weight shorts", with 300 gr of additional weight on each thigh and participated 2 times/week in a 12-week training intervention program. The CG followed the same training program without wearing the "weight shorts". The physical abilities were evaluated the week before (pre) and two days after the 12-week intervention training period (post) and the follow-up evaluation was performed 4 weeks after the post measurement. The measured parameters were: a) sprint/repeated sprint ability (straight and with 180º turns, RSA-best/mean/total), b) RSA fatigue-index, c) vertical jump ability and d) lower body maximal strength. The EG improved significantly more (p&lt; 0.05) compared to the CG on 10-m-straight, 30-, 35-, 40-m with 180º turns RSAbest-sprints, RSA fatigue-index, squat jump, leg curl (single right/left leg) and in split squat (single right/left leg) 5RM load. Using special shorts with additional weights on the thighs during soccer training improved speed/RSAbest-times and fatigue-index, jump ability and lower limbs maximal strength in youth soccer players.

Efthimios Bogiatzidis

Vassilios Gourgoulis

Aikaterini Bogiatzidou

Ilias Smilios

The Effects of Training with Additional Weight Shorts on Physical Performance of Adolescent Soccer Players

青少年足球运动员使用额外负重短裤训练对体能表现的影响

Introduction: Live high-train high (LHTH) is suggested to improve performance, especially maximal aerobic capacity through the hypoxic adaptation responses. The present study aims to determine the impact of LHTH protocol on cardio-respiratory variables, lactate response, iron profile indices, and lung function capacities to the performance enhancement of middle-long distance (MLD) runners. Methods: Seven MLD runners were trained LHTH for six weeks at 8000ft altitude. Cardio-respiratory variables (V̇O2max, VO2/HR, VEmax, HR response), lactate response, iron profile indices (Hb, iron, UIBC, TIBC, transferrin, EPO, ferritin), and lung function parameters (FVC, FEV1, FEV1/FVC, PEF, and VC) were measured via standard protocols. Result: Hemoglobin (Hb, 7.8%), iron concentration (36.7%), and TIBC (8.2%) were found to be significantly increased after LHTH. On the other hand, V̇O2max (6.4%) and PEF (10.7%) were found to be significantly (p &lt; 0.05) increased after camp. But HRrest (1.8%), HRrec (5min and 10min with 2.3% and 4.7% respectively), and lactate peak (7.9%) significantly decreased after LHTH condition. Discussion: All participating athletes improved performances after LHTH (overall group improved by 1.7%, individual increase up to 2.6%). Specific training load with hypoxic stress at high altitude induces peripheral chemoreceptor activation and stimulates sympathetic drive to initiate adaptive cascade leading to V̇O2max improvement (improved group mean 6.4%, individually up to 16.7%) which might be supported by enhanced erythropoiesis, iron metabolism, Hb concentrations, peak expiratory flow, glycolytic enzyme activity, enhanced oxidative capacity, improved resting and recovery HR response and peak lactate tolerance.

Surojit Sarkar

Sreejita Dutta

Subhra Chatterjee

Kamlesh Tiwana

Sanjay Saraswat

Influence of Live High Train High on Physiological Training Adaptations and Athletic Performance in Trained Runners: An Observational Cohort Case Study

训练跑者生理训练适应与运动表现受高住高练影响之观察性队列案例研究

Orthorexia nervosa (ON) is a disorder characterized by obsessive behavior towards healthy eating. Some groups present a higher prevalence of ON and athletes seems to be a population at risk. The aim of this study was to determine the prevalence of ON in the rock and sport climbing community. population using two different questionnaires. Düsseldorf Orthorexia Scale (PL-DOS) was used to assess ON. The study involved 236 climbers (including 159 men and 77 women, 67.4 and 32.6%, respectively), with an average age of 34.7±9.2 years. The group was divided into groups according to criteria such as the preferred type and style of climbing, participation in climbing competitions or the volume of training undertaken. Orthorexia was diagnosed in 12.7% (n=30) of climbers, with a mean score of PL-DOS of 32.8±2.4 with a 95% confidence interval ranging from 31.9 to 33.7. Another 25% of the respondents were diagnosed with ON risk (mean±SD 26.8±1.5, 95% CI 36.4-27.2). It was not found that the adopted stratification variables significantly differentiated the groups distinguished on their basis. The only exceptions were age and weekly training frequency. However, the effect sizes were small in both cases.

Krzysztof Sas-Nowosielski

Mateusz Gutek

Prevalence of Orthorexia Nervosa in a Sample of Rock and Sport Climbers

岩石和运动攀岩者中正念神经症的流行率

Rugby is a popular sport and requires participants to have commensurate physical attributes for effective participation. One physical fitness test battery which enjoys extensive use contextually is the European Test of Physical Fitness (Eurofit). However, the psychometric properties of the test battery have not been explored and documented in the local context. Therefore, this study was conducted to examine the test-retest reliability of the Eurofit test battery items among elite schoolboy rugby players in Harare, Zimbabwe. Thirty-two (32) players with the mean age of 17.2 (SD=1.03) years completed all the tests during the in- season period. Anthropometric and Eurofit test measurements were obtained twice with seven days separating the assessments. The Intraclass Correlation Coefficient (ICC) estimated the reliability test items. The global ICCs for the Eurofit test items ranged from 0.59 to 0.98. The Sit-and-Reach test yielded the highest temporal reliability (ICC=0.98). The Plate Tapping test, Flamingo Balance test and 10×5m Shuttle Run test showed ICCs &lt; 0.7. Cognisant of the study limitations, some component test items of Eurofit test battery can be recommended for reliably evaluating aspects of physical fitness in junior rugby players in Zimbabwe whilst others still need consideration and test modification.

Tafadzwa Mupondi

Tonderai Washington Shumba

Christiane Von Der Heiden

Farirai Kamba

Matthew Chiwaridzo

Evidence for the Psychometric Properties of Component Test Items in the Eurofit Test Battery administered to Elite Schoolboy Rugby Union Players: A Test-retest Reliability Study

精英学校橄榄球联盟球员在Eurofit测试电池中组件测试项目的心理测量特性证据：一项重测信度研究

The idea of opening military classes refers to the tradition of national defense education, training the young generation to defend the homeland and strengthening the country's ties with the army. The creation of military classes became a precedent for the Ministry of National Defense and the Ministry of National Education to build a common defense education system for high school students. The task of military classes in Polish high schools is to prepare young people for future service in various services, such as police, fire brigades and other special services. The aim of this work is to capture the relationship between body composition components and physical fitness of selected uniformed groups. The body composition components were analyzed with the help of the Tanita Body Composition Analyzer DC-240MA. The study used tests from the Polish Army physical fitness test, the Beep test and barbell bench press while lying on a straight bench. One of the conclusions obtained was that the correlation between body composition and fitness tests showed that higher levels of body fat, lean body mass, BMI and body weight negatively affect the results obtained in pull-ups, trunk bends, shuttle runs and Beep tests.

涉及主题	医学生物物理疗法心理学内科学数学物理物理医学与康复计算机科学地理病理政治学法学社会学内分泌学历史经济考古量子力学工程类生态学哲学
出版信息	出版商: Wydawnictwo Naukowe Uniwersytetu Szczecinskiego，出版周期: ，期刊类型: journal，开源期刊: 是
基本数据	创刊年份: 2019，原创研究文献占比: 0.00%，自引率:N.A.， Gold OA占比: 0.00%
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Central European Journal of Sport Sciences and Medicine

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