International journal of sports and exercise medicine最新文献

{"title":"Effects of High-Intensity Circuit Training in Obese and Overweight Population: A Randomized Clinical Trial","authors":"Themistocleous Irene-Chrysovalanto, A. Petros, Stefanakis Manos","doi":"10.23937/2469-5718/1510237","DOIUrl":"https://doi.org/10.23937/2469-5718/1510237","url":null,"abstract":"Background: Obesity is a serious risk for various cardiovascular diseases and is often managed with increased physical activity and exercise. The purpose of this study is to investigate the effects of a minimal dose, High-Intensity Circuit Training (HICT) program on a range of cardiovascular risk factors in obese and overweight individuals. Methods: The trial was prospectively registered with Cyprus National Bioethics Committee ΕΕΒΚ/ΕΠ/2017/38 29 th October 2017. A total of 30 participants were randomly allocated to HICT-group (n = 15) or to a no exercise control-group (n = 15). Participants in the HICT-group trained for 36-minutes, twice a week (18-minutes per session) for 8 weeks in total. The program consisted of 2 circuits of 6 exercise stations of 1min at 50-60% of Heart Rate Reserve (HRR) which progressed to 70-85% of HRR after the first two weeks, alternating with 1min active rest at 40-50% of HRR which progressed to 50-60% of HRR. Approximately 12 repetitions were performed per station. Body composition, blood markers and physiological variables, cardiorespiratory fitness and isometric strength were measured at baseline and post-intervention. Findings: Significant and meaningful improvements were demonstrated in cardiorespiratory fitness, several body composition variables, isometric strength of the left (non-dominant) lower limb and several physiological variables. No significant changes were revealed to the biochemical parameters or the strength of the right (dominant) limp. Conclusion: The results of the study suggest that a low-frequency, circuit training program with high intensity lasting only for 18-minutes twice a week is the minimum required dose in reducing at least some of the cardiovascular risk factors, in obese and overweight population.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85073869","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}

{"title":"The Effect of Sports Drinks to Biochemical Signs on Delayed Onset Muscle Soreness (DOMS) in Dehydrated Individuals Due to Eccentric Exercise","authors":"Sendil Ates","doi":"10.23937/2469-5718/1510233","DOIUrl":"https://doi.org/10.23937/2469-5718/1510233","url":null,"abstract":"Sendil et al. Int J Sports Exerc Med 2022, 8:233 Citation: Sendil A (2022) The Effect of Sports Drinks to Biochemical Signs on Delayed Onset Muscle Soreness (DOMS) in Dehydrated Individuals Due to Eccentric Exercise. Int J Sports Exerc Med 8:233. doi.org/10.23937/2469-5718/1510233 Accepted: October 12, 2022; Published: October 14, 2022 Copyright: © 2022 Sendil A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The Effect of Sports Drinks to Biochemical Signs on Delayed Onset Muscle Soreness (DOMS) in Dehydrated Individuals Due to Eccentric Exercise","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78208224","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}

{"title":"The Impact of Food Security Status on Body Composition Changes in Collegiate Football Players","authors":"Stowers Lee, Harman Tara, Pavela Greg, F. Jose R","doi":"10.23937/2469-5718/1510238","DOIUrl":"https://doi.org/10.23937/2469-5718/1510238","url":null,"abstract":"Background: Food insecurity negatively affects nutrition intake and diet quality, and college students specifically experience food insecurity in greater proportions than the general adult population. However, the prevalence and effects of food security among Division 1 college football athletes is unknown. Aim: This study investigates the relationship between food security and body composition changes in Division 1 football players during off-season training. Methods: This study was conducted as a secondary analysis of routine data collected from football players in a southeastern collegiate athletic department. Body composition was measured before and after a typical off-season training program on campus. Athletes completed the USDA adult food security 10-item survey following the second body composition measurement. Differences in the rate of change in body composition by food security status over the training period were calculated using ANCOVA. Additionally, we assessed the prevalence of food security across racial groups. Results: Sixty-three percent of surveyed athletes (n = 85) reported some degree of food insecurity. Food insecurity was more prevalent among Black athletes. Food insecurity was not associated with changes in body weight, body fat percent, muscle mass, or BMI among athletes during an off-season training period. Conclusion: Our findings indicate that levels of food insecurity were not associated with body composition changes during off-season training in collegiate football players. Supplemental food assistance and athletes’ interaction with the on-staff Registered Dietitian Nutritionist (RDN) may have reduced the prevalence of food insecurity, as athletes who communicate with a RDN regularly may make healthier dietary choices. However, survey results suggest that food insecurity is prevalent in collegiate athletics, with higher prevalence among Black athletes than other races, but more research is needed to evaluate the effect of food security on body composition changes.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80492234","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}

{"title":"Influence of the Menstrual Cycle on the Performance of Different Physical Tests Specific to Handball","authors":"Innocent MOUSSOUAMI Simplice, Donné AGBODJOGBE Kpedetin Wilfrid Dieu, Marc BOUSSANA Alain, God Louniongo, Ghislain ALONGO Yvon Rock, Issiako Bio Nigan","doi":"10.23937/2469-5718/1510234","DOIUrl":"https://doi.org/10.23937/2469-5718/1510234","url":null,"abstract":"Nowadays, several scientific studies focus women’s the menstrual cycle and its impact on sports performance. However, the results of these studies are controversial. In This regard, the aim of this study is to evaluate the effects of the menstrual cycle on physiological responses, intermittent Yo-Yo test performance, repeated sprints and medicine-ball in elite women handball players. The sample of this study is 18.71 ± 0.72 years older female players. The following handball specific physical tests were performed: intermittent Yo-Yo test, repeated sprints and medicine-ball whose lactate concentration was also measured. Endurance capacity ( ) 2max VO  was lower in the luteal phase (p < 0.001). In contrast, medicine-ball performance, and repeated sprinting ability are better in the Follicular Phase (FP). The menstrual cycle affected performance on the Yo-Yo IET, exercise HRmax and muscle strength. Better performance is observed during the follicular phase.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"538 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91056738","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}

{"title":"Validation of an Allometric Model to Predict Cardiorespiratory Fitness in Young adults from 20-M Shuttle Run Test Performance","authors":"R. Roger, Nevill Alan M, Plowman Sharon A","doi":"10.23937/2469-5718/1510226","DOIUrl":"https://doi.org/10.23937/2469-5718/1510226","url":null,"abstract":"Background and Objectives : The maximum aerobic power 2max ( ) VO  is an important predictor of endurance performance and is closely associated with an individual’s Cardiorespiratory Fitness (CRF). Being able to screen for changes in CRF cost effectively as well as identifying variables to provide accurate values for aerobic fitness has been identified by numerous studies. The purpose of the present study was to investigate whether published models were valid predictors of CRF in young adults using previously unpublished 20 m SRT (shuttle run test) data. Methods : Estimated 2max VO  values from 20m SRT performance were compared across three published models using an independent data set of 178 participants (89 men; age 22.8 ± 4.2 years, height 1.80 ± 0.07 m, body mass 79.8 ± 12.4 kg and 89 women; age 21.3 ± 2.4 years, height 1.67 ± 0.06 m, body mass 62.6 ± 9.3 kg). Closeness-of-fit was assessed using means and standard deviation and bias. Results : An allometric model provided a superior fit, with less bias, compared with two published linear regression equations. Directly measured 2max VO  values were 51.2 ± 8.6 ml kg -1 min -1 compared with 49.8 ± 9.3 (allometric model) versus 46.8 ± 7.9 and 44.4 ± 9.1 ml kg -1 min -1 for the two linear models respectively. Conclusion : An allometric model provided more accurate predictions of CRF (ml kg -1 min -1 ) in young adults compared with two published linear models.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86800723","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}

{"title":"The Role of Fitness Status and Sex on Metabolic Flexibility during a Bout of High-Intensity Interval Exercise and a High-Fat Meal Challenge","authors":"Olenick Alyssa A., Pearson Regis C., Jenkins Nathan T.","doi":"10.23937/2469-5718/1510227","DOIUrl":"https://doi.org/10.23937/2469-5718/1510227","url":null,"abstract":"We explored whether High-Intensity Interval Exercise (HIIE) could provide a novel method to test metabolic flexibility during exercise. We also aimed to assess substrate oxidation during HIIE and in response to a high-fat meal to determine if these assessments of metabolic flexibility are influenced by fitness and sex. Fat and carbohydrate oxidation were assessed during HIIE ( n = 21) of 4x4:3-min work: recovery (0W) intervals on a cycle ergometer at a power output of halfway between ventilatory threshold and V̇ O 2peak . A high-fat meal challenge (~ 81%fat) ( n = 19) included fasted and postprandial resting metabolic rate. Participants were categorized by sex and fitness status (V̇ O 2peak : High > 40 ml•kg -1 •min -1 vs. low < 40 ml•kg -1 •min - 1 ). During HIIE, fat oxidation (g•kg -1 ) was greater in high fitness (AUC: high: 7.10 (0.04) vs. low: 7.06 (0.01), P = 0.019) and carbohydrate oxidation (g•kg -1 ) was higher in males (AUC: males: 8.27 (0.14) vs. females: 7.87 (0.15), P ≤ 0.001). There were no fitness status or sex group differences during the high-fat meal challenge for fat or carbohydrate oxidation. However, total grams of fat oxidized (g) during HIIE and the high-fat meal were related ( r = 0.631, P = 0.005). Low fit females had poorer metabolic flexibility during HIIE, lower fat oxidation during HIIE (AUC: high fit females 7.10 (0.05) vs. low fit females 7.04 (0.01), P = 0.050) and lower fat oxidation in response to the high-fat meal (AUC: high fit females: 0.59 (0.14) vs. low fit females: 0.33 (0.12), P = 0.030). HIIE may detect metabolic differences associated with training not captured by high-fat meal challenge. Low fitness status negatively impacts metabolic flexibility in response to HIIE, and this effect appears to be more prominent in females.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81450041","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}

{"title":"Most Common Injuries in Crossfit Training: A Systematic Review","authors":"Joelle Brandsema Channah, Mathijssen Mehrab Mirwais, Cornelia Nina Maria","doi":"10.23937/2469-5718/1510228","DOIUrl":"https://doi.org/10.23937/2469-5718/1510228","url":null,"abstract":"Background: The injury rate for CrossFit training is relatively low in comparison to other fitness-related sports. Systematic reviews regarding the extent of number of injuries per body part and injury-related exercises in CrossFit training are scarce. The purpose of this study was to determine the injury prevalence and incidence in CrossFit participants, in particular of injured body parts, and to examine injury related exercises in CrossFit. Methods: In December 2021 a comprehensive search in Embase, PubMed, Cinhal, and Sport Discus databases was conducted using keywords CrossFit, Weightlifting, gymnastics and injuries. Studies investigating injury incidence and prevalence in CrossFit training that specifically reported injured body parts, independently screened by two authors, were included. The NIH Quality assessment tool for observational cohort and cross-sectional studies was used to evaluate the methodological quality and validity of each study. Results: Eighteen studies were included in this review. The injury prevalence was between 19.4 and 73.5%, the injury incidence between 12.8 and 66.2%. Shoulder injuries, accounting for between 6.7 and 40.6% of all injuries, were found as most common injury location among CrossFit participants. Lower back (12.9 to 36.0% of all injuries), hand/wrist (4.0 to 32.7%), knee (4.7 to 21.4%), elbow (2.0 to 17.9%), foot/ankle (3.0 to 10.2%), hip (1.6 to 13.3%) and neck (2.0 to 7.0%) injuries were less commonly reported. Most injuries were associated with weight lifting or power lifting movements. Lower back injuries occurred more in weight lifting and power lifting exercises. Shoulder injuries were associated with gymnastic exercises such as ring dips, ring muscle ups, and exercises containing kipping movements. Conclusion: The injury prevalence and incidence in CrossFit participants was between 19.4 and 73.5% and 12.8 and 66.2, respectively. Shoulder injuries were the most common injured body part among CrossFit participants, followed by lower back and hand/wrist injuries. Gymnastic movements as kipping pull-ups, ring dips and muscle ups were reported as exercises with a higher risk for shoulder injuries. Lower back injuries were more commonly reported in association with weightlifting and power lifting movements such as back squat and dead lift.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"44 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78325460","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}

{"title":"Running Performance during the COVID-19 Pandemic","authors":"Venkatesan Sriram, S. Mary, Eagle Sonja, P. Caleb, Lipman Grant S","doi":"10.23937/2469-5718/1510229","DOIUrl":"https://doi.org/10.23937/2469-5718/1510229","url":null,"abstract":"Background: The COVID-19 pandemic saw government-imposed health mandates that contributed to profound work, exercise, and lifestyle changes. There was an observed increase in weight gain and sedentary behavior during the pandemic in United States, as well as increased outdoor exercise and running in the United States. While road race times have consistently slowed over the last few decades, it is unknown how running performance changed during the pandemic. Methods: This was a retrospective analysis of finishers of the world’s largest 10 km road race in 2019 (pre-pandemic) and 2021 (pandemic). Times were","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87274425","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}

{"title":"Comparison of Head Impact Magnitudes and Frequencies Between Intercollegiate Male and Female Lacrosse Players","authors":"Yates Elizabeth Daidone, Nelson Katelyn, Bradney Debbie A., Breedlove Katherine M., Bowman Thomas G.","doi":"10.23937/2469-5718/1510230","DOIUrl":"https://doi.org/10.23937/2469-5718/1510230","url":null,"abstract":"Context: Research studies have examined effects of player position and type of play on head impacts in intercollegiate football players, but there is little available information on head impacts in lacrosse players. Objective: Compare magnitude and frequency of head impacts between lacrosse players based on player position and type of play. Design: Descriptive epidemiology study. Setting: Lacrosse fields.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74073481","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}

{"title":"The Effect of Implementation of Continuous Assessment in Practical and Theoretical Class for Sport Science Students","authors":"Bitew Fenta","doi":"10.23937/2469-5718/1510222","DOIUrl":"https://doi.org/10.23937/2469-5718/1510222","url":null,"abstract":"The purpose of continuous assessment is to monitor learner’s progress so decisions can be made about the best way to facilitate further learning in terms of expected knowledge, skills, attitude and value. The aim of this study was to investigate the effect of implementation continuous assessment in practical and theoretical class for sport science students. Descriptive survey research design was employed. Sample of the data were 96 students, 15 instructors and 2 heads of departments. Random and purposive sampling techniques were employed. The collected data through questionnaire were tallied, tabulated and interpreted into percentage while, interview and documents were analyzed qualitatively through narration for the purpose of triangulation. The results of the study showed that continuous assessment assists instructors for identify problems; motivates learners to work hard through the academic year; enhances self-esteem of learners; students identify their strengths and weaknesses. The study concluded that effect of continuous assessment motivateslearners not only to participate actively but also creates an opportunity to practice the skill rather than observing the skill; Provides learners with opportunities to master the skills without the need for feedback from other and identify their strength and weakness; Moreover, Student performance/skills were improve over a period of time due to continuous repetition of skills.","PeriodicalId":91298,"journal":{"name":"International journal of sports and exercise medicine","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83786070","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}