International journal of sports medicine最新文献_第9页

Energetics (and Mechanical Determinants) of Sprint and Shuttle Running. 短跑和穿梭跑的能量学(和机械决定因素)。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2023-11-13 DOI: 10.1055/a-2184-9007

Paola Zamparo, Andrea Monte, Gaspare Pavei

引用次数: 0

Left Ventricular Hypertrophy in Male and Female Judo Athletes. 男女柔道运动员的左心室肥大。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2024-02-24 DOI: 10.1055/a-2252-1239

Carlo Rossi, Roberto Roklicer, Patrik Drid, Aleksandra Milovancev, Tatjana Trivic, Antonino Scardina, Attilio Carraro, Antonino Bianco

{"title":"Left Ventricular Hypertrophy in Male and Female Judo Athletes.","authors":"Carlo Rossi, Roberto Roklicer, Patrik Drid, Aleksandra Milovancev, Tatjana Trivic, Antonino Scardina, Attilio Carraro, Antonino Bianco","doi":"10.1055/a-2252-1239","DOIUrl":"10.1055/a-2252-1239","url":null,"abstract":"Changes in cardiac geometry develop after intense and prolonged training. Left ventricular enlargement, increased relative wall thickness, and growing mass of the left ventricle occur after strenuous exercise. Combat sports such as judo can lead to left ventricular hypertrophy. Previous studies have found that there are differences in left ventricular chamber size and thickness between the sexes, with female athletes having smaller wall diameters and less hypertrophy than male athletes. The research aims to examine heart muscle adaptations and remodeling of cardiac geometry among elite judo athletes and to evaluate differences between males and females. A cross-sectional study included a group of 19 (males n=10, females n=9) professional judokas between 20 and 30 years. Demographic and anthropometric data were collected. Cardiac geometry was determined by two-dimensional transthoracic echocardiography. In terms of left ventricular mass and the left ventricular mass index significant differences were found between male and female judokas (233.44±68.75 g vs. 164.11±16.59 g, p=0.009), (105.16±24.89 vs. 84.66±15.06, p=0.044), respectively. A greater enlargement of the heart muscle is observed in male athletes compared to the female group. Left ventricle enlargement is likely to occur among elite-level judokas.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11065483/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139944102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of a Transoceanic Rowing Challenge on Cardiorespiratory Function and Muscle Fitness. 跨洋赛艇挑战对心肺功能和肌肉健康的影响。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2023-11-06 DOI: 10.1055/a-2205-1849

Chris Ellis, Thomas E Ingram, Chris Kite, Suzan R Taylor, Elizabeth Howard, Joanna L Pike, Eveline Lee, John P Buckley

{"title":"Effects of a Transoceanic Rowing Challenge on Cardiorespiratory Function and Muscle Fitness.","authors":"Chris Ellis, Thomas E Ingram, Chris Kite, Suzan R Taylor, Elizabeth Howard, Joanna L Pike, Eveline Lee, John P Buckley","doi":"10.1055/a-2205-1849","DOIUrl":"10.1055/a-2205-1849","url":null,"abstract":"Ultra-endurance sports and exercise events are becoming increasingly popular for older age groups. We aimed to evaluate changes in cardiac function and physical fitness in males aged 50-60 years who completed a 50-day transoceanic rowing challenge. This case account of four self-selected males included electro- and echo-cardiography (ECG, echo), cardiorespiratory and muscular fitness measures recorded nine months prior to and three weeks after a transatlantic team-rowing challenge. No clinically significant changes to myocardial function were found over the course of the study. The training and race created expected functional changes to left ventricular and atrial function; the former associated with training, the latter likely due to dehydration, both resolving towards baseline within three weeks post-event. From race-start to finish all rowers lost 8.4-15.6 kg of body mass. Absolute cardiorespiratory power and muscular strength were lower three weeks post-race compared to pre-race, but cardiorespiratory exercise economy improved in this same period. A structured program of moderate-vigorous aerobic endurance and muscular training for>6 months, followed by 50-days of transoceanic rowing in older males proved not to cause any observable acute or potential long-term risks to cardiovascular health. Pre-event screening, fitness testing, and appropriate training is recommended, especially in older participants where age itself is an increasingly significant risk factor.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71481532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Influence of Pedaling Frequency on Blood Lactate Accumulation in Cycling Sprints. 踩踏频率对自行车短跑中血液乳酸累积的影响

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-22 DOI: 10.1055/a-2255-5254

R. Haase, Anna Katharina Dunst, N. Nitzsche

{"title":"The Influence of Pedaling Frequency on Blood Lactate Accumulation in Cycling Sprints.","authors":"R. Haase, Anna Katharina Dunst, N. Nitzsche","doi":"10.1055/a-2255-5254","DOIUrl":"https://doi.org/10.1055/a-2255-5254","url":null,"abstract":"Anaerobic performance diagnostics in athletes relies on accurate measurements of blood lactate concentration and the calculation of blood lactate accumulation resulting from glycolytic processes. In this study, we investigated the impact of pedaling frequency on blood lactate accumulation during 10-second maximal isokinetic cycling sprints. Thirteen trained males completed five 10-second maximal isokinetic cycling sprints on a bicycle ergometer at different pedaling frequencies (90 rpm, 110 rpm, 130 rpm, 150 rpm, 170 rpm) with continuous power and frequency measurement. Capillary blood samples were taken pre-exercise and up to 30 minutes post-exercise to determine the maximum blood lactate concentration.Blood lactate accumulation was calculated as the difference between maximal post-exercise and pre-start blood lactate concentration. Repeated measurement ANOVA with Bonferroni-adjusted post hoc t-tests revealed significant progressive increases in maximal blood lactate concentration and accumulation with higher pedaling frequencies (p<0.001; η2+>+0.782).The findings demonstrate a significant influence of pedaling frequency on lactate accumulation, emphasizing its relevance in anaerobic diagnostics. Optimal assessment of maximal lactate formation rate is suggested to require a pedaling frequency of at least 130 rpm or higher, while determining metabolic thresholds using the maximal lactate formation rate may benefit from a slightly lower pedaling frequency.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140674730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cardiomyocyte Adaptation to Exercise: K+ Channels, Contractility and Ischemic Injury. 心肌细胞对运动的适应：K+ 通道、收缩力和缺血性损伤。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-22 DOI: 10.1055/a-2296-7604

Robert H. Fitts, Xinrui Wang, Wai-Meng Kwok, A. Camara

{"title":"Cardiomyocyte Adaptation to Exercise: K+ Channels, Contractility and Ischemic Injury.","authors":"Robert H. Fitts, Xinrui Wang, Wai-Meng Kwok, A. Camara","doi":"10.1055/a-2296-7604","DOIUrl":"https://doi.org/10.1055/a-2296-7604","url":null,"abstract":"Cardiovascular disease is a leading cause of morbidity and mortality, and exercise-training (TRN) is known to reduce risk factors and protect the heart from ischemia and reperfusion injury. Though the cardioprotective effects of exercise are well-documented, underlying mechanisms are not well understood. This review highlights recent findings and focuses on cardiac factors with emphasis on K+ channel control of the action potential duration (APD), β-adrenergic and adenosine regulation of cardiomyocyte function, and mitochondrial Ca2+ regulation. TRN-induced prolongation and shortening of the APD at low and high activation rates, respectively, is discussed in the context of a reduced response of the sarcolemma delayed rectifier potassium channel (IK) and increased content and activation of the sarcolemma KATP channel. A proposed mechanism underlying the latter is presented, including the phosphatidylinositol-3kinase/protein kinase B pathway. TRN induced increases in cardiomyocyte contractility and the response to adrenergic agonists are discussed. The TRN-induced protection from reperfusion injury is highlighted by the increased content and activation of the sarcolemma KATP channel and the increased phosphorylated glycogen synthase kinase-3β, which aid in preventing mitochondrial Ca2+ overload and mitochondria-triggered apoptosis. Finally, a brief section is presented on the increased incidences of atrial fibrillation associated with age and in life-long exercisers.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140676552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Open Water Swimming in Elite Triathletes: Physiological and Biomechanical Determinants. 三项全能精英运动员的开放水域游泳：生理和生物力学决定因素。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-22 DOI: 10.1055/a-2289-0873

Ó. López-Belmonte, A. Gay, J. Ruiz-Navarro, F. Cuenca-Fernández, R. Cejuela, R. Arellano

{"title":"Open Water Swimming in Elite Triathletes: Physiological and Biomechanical Determinants.","authors":"Ó. López-Belmonte, A. Gay, J. Ruiz-Navarro, F. Cuenca-Fernández, R. Cejuela, R. Arellano","doi":"10.1055/a-2289-0873","DOIUrl":"https://doi.org/10.1055/a-2289-0873","url":null,"abstract":"This study aimed (i) to analyze the 1500 m open water swimming performance, (ii) to examine the associations between physiological and biomechanical variables with swimming performance, and (iii) to determine which variables can predict swimming performance in triathletes. Fourteen elite triathletes (23.4±3.8 y) performed a 1500 m test in open water swimming conditions. Swimming performance was assessed using World Aquatics Points Scoring, and data were obtained from the 1500 m open water swimming test. Heart rate, end-exercise oxygen uptake (EE˙VO2) and blood lactate concentrations were measured. The initial 250 m of the 1500 m swimming test presented the highest values of biomechanical variables in males (i. e. swimming speed, stroke rate (SR), length (SL), index (SI)). A decrease in SL was observed in the last 250 m in both sexes. Positive association were found between EE˙VO2 (r=0.513; p=0.030), swimming speed (r=0.873; p<0.001) and SI (r=0.704; p=0.002) with swimming performance. In contrast, time constant of the oxygen uptake (r=-0.500; p=0.034) and buoy-turn times (r=-0.525; p=0.027) were negatively associated with performance. SI was the main predictor (R 2=0.495) of open water swimming performance in triathletes. In conclusion, triathletes and coaches must conduct open water training sessions to maximize SI (i. e. swimming efficiency).","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140676239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Change in femoral cartilage cross-sectional area after aerobic and resistance exercise. 有氧运动和阻力运动后股骨软骨横截面积的变化。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-17 DOI: 10.1055/a-2308-3148

Junhyeong Lim, Jaewook Lee, Sang-Pill Park, Jinwoo Lee, Jaewon Kim, Jihong Park

{"title":"Change in femoral cartilage cross-sectional area after aerobic and resistance exercise.","authors":"Junhyeong Lim, Jaewook Lee, Sang-Pill Park, Jinwoo Lee, Jaewon Kim, Jihong Park","doi":"10.1055/a-2308-3148","DOIUrl":"https://doi.org/10.1055/a-2308-3148","url":null,"abstract":"We compared the immediate response and recovery of femoral cartilage morphology following aerobic or resistance exercise to a control condition. Fifteen healthy young males (23.9 years; 170.1 cm; 69.7 kg) visited the laboratory three separate days and randomly performed one of the 30 min exercise aerobic exercise (treadmill running); resistance exercises (leg presses, back squats, and knee extensions); or seated rest as the control, each followed by the 50 min recovery. Ultrasonographic images of the femoral cartilage cross-sectional area (CSA) were obtained before and after exercise and every 5 min thereafter. To test exercise effects over time, a mixed model analysis of variance and Tukey-Kramer post-hoc tests were performed (p<0.05). The femoral cartilage CSA was different (condition × time: F34,742=4.30, p<0.0001) that the femoral cartilage CSA was decreased after the aerobic (-5.8%, p<0.0001) and the resistance (-3.4%, p=0.04) exercises, compared to the pre-exercise levels. Deformed femoral cartilage CSA took 35- and 10 min to return to the pre-exercise levels after aerobic and resistance exercises (p>0.09), respectively. Thirty minutes of moderate exertion performing aerobic or resistance exercises immediately reduced the femoral cartilage CSA. A rest period ranging from 10 to 35 min was required for cartilage recovery after weight-bearing exercises.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140693716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perimenopausal physical activity and dementia risk: A systematic review. 围绝经期体力活动与痴呆症风险：系统综述。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-16 DOI: 10.1055/a-2307-8122

Niall Simmons, Miguel Rodriguez Ruiz, F. Ronca

{"title":"Perimenopausal physical activity and dementia risk: A systematic review.","authors":"Niall Simmons, Miguel Rodriguez Ruiz, F. Ronca","doi":"10.1055/a-2307-8122","DOIUrl":"https://doi.org/10.1055/a-2307-8122","url":null,"abstract":"Mixed-gender studies predominate the current literature exploring the interaction between physical activity and dementia risk. Considering that menopause appears to contribute to females' increased risk of cognitive decline when compared to males, further clarity is required on the impact of physical activity in reducing late-life dementia risk specifically in perimenopausal females. A literature search of MEDLINE, EMBASE, Web of Science, SCOPUS and CINAHL databases yielded fourteen studies for review. A significant inverse relationship between perimenopausal leisure time physical activity, or physical fitness, and future all-cause dementia risk was found in most studies exploring this interaction. Higher levels of perimenopausal household physical activity and combined non-leisure time physical activity also displayed a favourable impact in lowering dementia risk. A dose-response effect was demonstrated, with approximately 10 MET-hour/week of leisure time physical activity required for significant dementia risk reduction. Three of four papers exploring causality provided analyses that are proposed to counter the 'reverse causation' argument, suggesting that physical activity may indeed have a protective role in reducing dementia risk post-menopause. The current systematic review provides promising results regarding the impact of pre- and perimenopausal physical activity on reducing late-life dementia risk, suggesting that promoting perimenopausal physical activity may serve as a crucial tool in mitigating the risk of post-menopausal cognitive decline.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140698746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Relationship between Workload, Psychological State and Sleep in Female Soccer Athletes. 女足球运动员的工作量、心理状态和睡眠之间的关系。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-10 DOI: 10.1055/a-2304-3694

John Long, Denver Brown, John Farrell, Matthew Gonzalez, Kelly Cheever

{"title":"Relationship between Workload, Psychological State and Sleep in Female Soccer Athletes.","authors":"John Long, Denver Brown, John Farrell, Matthew Gonzalez, Kelly Cheever","doi":"10.1055/a-2304-3694","DOIUrl":"https://doi.org/10.1055/a-2304-3694","url":null,"abstract":"This study assessed the multifaceted relations between measures of workload, psychological state, and recovery throughout an entire soccer season. A prospective longitudinal study was utilized to measure workload (GPS training load, RPE), psychological state (mental stress, mental fatigue, and mood), and recovery (sleep duration, sleep quality, and soreness), across ninety observations. Separate linear-mixed effect models were used to assess outcomes of RPE, soreness, and sleep duration. A linear mixed-effects model explained 59% of the variance in RPE following each session. Specifically, each standard deviation increase in GPS load and mental stress in the morning prior to training increased RPE by 1.46(SE=0.08) and 0.29(SE= 0.07) respectively, following that day's training. Furthermore, a significant interaction was found between several predictor variables and chronological day in the season while predicting RPE. Specifically, for each standard deviation increase in GPS load, RPE went up by 0.055 per day across the season suggesting that load had a higher impact on RPE as the season progressed. In contrast, the interaction of day by mental stress, sleep duration, and soreness continued to be stronger as the season progressed. Each linear mixed-effect model predicted a larger amount of variance when accounting for individual variations in the random effects.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140716777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hypoalgesia and Conditioned Pain Modulation in Blood Flow Restriction Resistance Exercise. 血流受限阻力运动中的低痛感和条件性疼痛调节。

IF 2.5 4区医学

International journal of sports medicine Pub Date : 2024-04-08 DOI: 10.1055/a-2301-9115

Jinghui Yang, Nicholas Rolnick, Ericka N. Merriwether, Smita Rao

{"title":"Hypoalgesia and Conditioned Pain Modulation in Blood Flow Restriction Resistance Exercise.","authors":"Jinghui Yang, Nicholas Rolnick, Ericka N. Merriwether, Smita Rao","doi":"10.1055/a-2301-9115","DOIUrl":"https://doi.org/10.1055/a-2301-9115","url":null,"abstract":"We compared the magnitude of exercise-induced hypoalgesia and conditioned pain modulation between blood-flow restriction (BFR) resistance exercise (RE) and moderate-intensity RE. Twenty-five asymptomatic participants performed unilateral leg press in two visits. For moderate-intensity RE, subjects exercised at 50% 1RM without BFR whereas BFR RE exercised at 30% 1RM with a cuff inflated to 60% limb occlusion pressure. Exercise-induced hypoalgesia was quantified by pressure pain threshold changes before and after RE. Conditioned pain modulation was tested using cold water as the conditioning stimulus and mechanical pressure as the test stimulus and quantified as pressure pain threshold change. Difference in conditioned pain modulation pre- to post- RE was then calculated. The differences of RE on pain modulations were compared using paired t-tests. Pearson's r was used to examine the correlation between exercise-induced hypoalgesia and changes in conditioned pain modulation. We found greater hypoalgesia with BFR RE compared to moderate-intensity RE (p = 0.008). Significant moderate correlations were found between exercise-induced hypoalgesia and changes in conditioned pain modulation (BFR: r = 0.63, moderate-intensity: r = 0.72). BFR RE has favorable effects on pain modulation in healthy adults and the magnitude of exercise-induced hypoalgesia is positively correlated with conditioned pain modulation activation.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140732428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0