International journal of sports medicine最新文献_第2页

Effect of lumbar spine motion on psoas major length during running at different speeds. 不同速度跑步时腰椎运动对腰大肌长度的影响。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-18 DOI: 10.1055/a-2726-4968

Tempei Tominaga, Natsuki Sado

{"title":"Effect of lumbar spine motion on psoas major length during running at different speeds.","authors":"Tempei Tominaga, Natsuki Sado","doi":"10.1055/a-2726-4968","DOIUrl":"https://doi.org/10.1055/a-2726-4968","url":null,"abstract":"Among the paraspinal muscles, the psoas major is essential for leg swing during running. As its sarcomere length indicates lower force-generating capacity at a lengthened position, greater hip extension at higher speeds may limit its force. Meanwhile, the lumbar spine becomes more lordotic and tilts anteriorly as running speed increases, which may shorten the psoas major. However, lumbar spine motion has been neglected when estimating psoas major length. We examined the effect of lumbar spine motion on psoas major length, comparing models with (MOVING) and without (FIXED) considering lumbar spine motion. Psoas major length was estimated during treadmill running at four different speeds (4.0-8.5 m/s). The main effect of running speed on PM length was not significant in MOVING (length normalised to standing: from 102.1±1.7 to 102.3±2.0%), whereas it was significant in FIXED (from 102.2±0.8 to 104.1±0.9%). A strong linear relationship between hip angle and psoas major length was found in FIXED (r 2>0.92), but was compromised in MOVING (r 2=0.74±0.17). Lumbar spine motion alters psoas major dynamics and prevents psoas major elongation at higher speeds. This may facilitate rapid leg swing by preserving the force-generating capacity of the psoas major.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145318247","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

Effects of myofascial exercises on instep kick biomechanics and myofascial elasticity. 肌筋膜运动对脚背踢生物力学和肌筋膜弹性的影响。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-13 DOI: 10.1055/a-2722-7468

Volkan Deniz, Aleyna Isik, Abdullah Kılcı, Inci Kesilmis

{"title":"Effects of myofascial exercises on instep kick biomechanics and myofascial elasticity.","authors":"Volkan Deniz, Aleyna Isik, Abdullah Kılcı, Inci Kesilmis","doi":"10.1055/a-2722-7468","DOIUrl":"https://doi.org/10.1055/a-2722-7468","url":null,"abstract":"This study aimed to investigate the effects of an anterior superficial myofascial chain strengthening program on maximum ball speed, myofascial elasticity, muscle activation, and shank kinematics. in young soccer players. A total of 32 licensed soccer players, aged 13-14 years, were recruited and randomly assigned to either an exercise group or a control group. Participants in the exercise group underwent an eight-week anterior superficial myofascial chain strengthening program consisting of three progressive phases. At baseline and after the eight-week intervention, maximum ball speed during the instep kick was measured using a radar gun; muscle activation was assessed via surface electromyography; and shank rotational velocity and acceleration were recorded using an inertial measurement unit. Myofascial elasticity was evaluated using a myotonometer. Compared to the control group, the exercise group demonstrated significant improvements in maximum ball speed, muscle activation, and myofascial elasticity. However, no significant changes were observed in shank rotational velocities or accelerations. Correlation analysis revealed that changes in maximum ball speed were significantly associated with alterations in muscle activation and myofascial elasticity. Anterior superficial myofascial chain strengthening program increases the maximum ball velocity during instep kick in young soccer players by improving muscle activation and myofascial elasticity.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145286115","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

Estimation of Runners' Lactate Threshold Heart Rate and Speed by Heart Rate Variability. 心率变异性对跑步者乳酸阈值心率和速度的估计。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-13 DOI: 10.1055/a-2721-9979

Changda Lu, Siyu Lu, Yiwei Wu, Qingjun Xing, Bingyu Pan, Yanfei Shen

{"title":"Estimation of Runners' Lactate Threshold Heart Rate and Speed by Heart Rate Variability.","authors":"Changda Lu, Siyu Lu, Yiwei Wu, Qingjun Xing, Bingyu Pan, Yanfei Shen","doi":"10.1055/a-2721-9979","DOIUrl":"https://doi.org/10.1055/a-2721-9979","url":null,"abstract":"Accurate measurement of training intensity is crucial for optimizing endurance running performance. Lactate Threshold Heart Rate (LTHR) and Speed (LTspeed) are commonly used but require invasive, costly methods. Heart Rate Variability (HRV) metrics offer a non-invasive alternative by assessing autonomic nervous system activity. This study evaluated the validity of various HRV metrics in predicting LTHR and LTspeed during indoor and outdoor graded exercise tests (GXTs) in 19 recreational runners. HRV thresholds (HRVTs) were determined using SD1, SD2, DFA-α1, DFA-α2, SDNN, and RMSSD via the Dmax method, and are referred to as HRVT1 to HRVT6. Indoor GXT results showed HRVTHR often underestimated LTHR, with all HRVTs, except HRVT4speed (DFA-α2, p = 0.06), showing significant differences from LT. Moderate correlations were observed for HRVT5HR (SDNN, r = 0.66), HRVT2speed (SD2, r = 0.56), and HRVT3speed (DFA-α1, r = 0.70). Outdoor GXTs showed no significant differences between most HRVTs and LT, except HRVT6HR (RMSSD, p = 0.03). HRVTspeed demonstrated moderate correlations (r = 0.54-0.7) with LTspeed. While HRVT and LT may reflect different physiological thresholds, HRVTs, particularly those based on DFA-α2, show promise as non-invasive predictors of LT in recreational runners.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145286071","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

Total genotype score and playing time and starter status in football: a pilot study. 总基因型得分与足球比赛时间和首发状态：一项初步研究。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-13 DOI: 10.1055/a-2722-7414

David Varillas-Delgado, Arturo Franco-Andrés, Jaime González-García

{"title":"Total genotype score and playing time and starter status in football: a pilot study.","authors":"David Varillas-Delgado, Arturo Franco-Andrés, Jaime González-García","doi":"10.1055/a-2722-7414","DOIUrl":"https://doi.org/10.1055/a-2722-7414","url":null,"abstract":"The aims of this research were to identify the relationships between the Total Genotype Score (TGS) and total competition time, as well as the total and relative distances covered during competition at different speed thresholds and to examine the probability of being a starter or non-starter based on TGS. A prospective pilot study was conducted with 34 professional male football players competing in the Spanish second division across three consecutive seasons. DNA samples were genotyped for six muscle performance-related polymorphisms, and TGS values were calculated. The total competition time and competition distances at different speed thresholds were evaluated. A TGS threshold of 75.0 a.u. discriminated starters with an AUC of 0.689. Players with higher TGS scores (TGS>75.0) accumulated more matches played (p=0.002), more matches as starters (p=0.009), greater playing time (p=0.009), and higher total distances covered (p=0.009). Players above this threshold were five times more likely to be starters (OR=5.00; 95% CI: 1.31-19.07; p=0.030). TGS was related with the number of matches played (β=1.088, p=0.006) matches as starter (β=1.087, p=0.004), playing time (β=28.1, p=0.018), and distance covered during season (β=3116, p=0.01). Genetic profiling is associated with starter status. Integrating genetic and GPS data provides a novel approach to player development and talent identification in elite sports.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145286026","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

Predicting Running-Related Injuries from Functional, Kinetic and Kinematic Data. 从功能、动力学和运动学数据预测跑步相关损伤。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-13 DOI: 10.1055/a-2706-5516

Ray Ban Chuan Loh, Jing Wen Pan, Muhammad Nur Shahril Iskandar, Pui Wah Kong

{"title":"Predicting Running-Related Injuries from Functional, Kinetic and Kinematic Data.","authors":"Ray Ban Chuan Loh, Jing Wen Pan, Muhammad Nur Shahril Iskandar, Pui Wah Kong","doi":"10.1055/a-2706-5516","DOIUrl":"10.1055/a-2706-5516","url":null,"abstract":"The literature has identified inconsistent biomechanical risk factors for running-related injuries but lacks investigations on interactions between biomechanics and other risk factors. This prospective cohort study aimed to develop and compare prediction models of various levels of complexity to predict running-related injuries over 12 months in recreational runners. The seven-item functional movement screen test was administered at baseline for 83 participants. Running biomechanics were evaluated using clinically friendly tools, including wearable in-shoe force sensors to measure vertical ground reaction forces and 2D video-based kinematic analysis of lower extremities. The participants were subsequently monitored over a 12-month follow-up period to track whether they sustained running-related injuries. Differences between the injured (n=26) and non-injured (n=55) groups were examined using the Mann-Whitney U-test. Binary logistic regression was performed to identify significant indicators for running-related injuries, with six models developed involving different sets of variables. Neither simple (involving one variable) nor complex models (including multiple variables) were statistically significant (p-values ranged from 0.106 to 0.972). In conclusion, prediction models developed using variables obtained from accessible tools are unable to accurately predict future running-related injuries regardless of model complexity. Researchers and practitioners should avoid over-reliance on simple measures for screening injury risks.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103003","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

Correction: Does Breathing Every Two Cycles Reduce the Breaststroke Energy Cost? 更正：每两个周期换气会降低蛙泳的能量消耗吗？

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-10 DOI: 10.1055/a-2694-3227

Miriam Natacha Alves, Ana Sofia Monteiro, Ricardo J Fernandes, Tiago M Barbosa, Joao Paulo Vilas Boas

引用次数: 0

Exercise-Induced Epigenetic Modifications: Implications for Healthy Aging. 运动诱导的表观遗传修饰：对健康衰老的影响。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-09 DOI: 10.1055/a-2702-4789

Qi Yang, Yue Hu, Bing Zhang, Weihao Hong

引用次数: 0

Sex- and sport-specific differences among elite strength and physique competitors. 精英力量和体格选手的性别和运动特异性差异。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-01 Epub Date: 2025-04-29 DOI: 10.1055/a-2597-1900

Juha J Hulmi, Jeve Ojala, Veli-Matti Lappi, Neil J Cronin, Timo Törmäkangas, Juha P Ahtiainen

{"title":"Sex- and sport-specific differences among elite strength and physique competitors.","authors":"Juha J Hulmi, Jeve Ojala, Veli-Matti Lappi, Neil J Cronin, Timo Törmäkangas, Juha P Ahtiainen","doi":"10.1055/a-2597-1900","DOIUrl":"10.1055/a-2597-1900","url":null,"abstract":"We aimed to characterize and compare elite strength athletes and physique athletes and to investigate potential sex differences and the contribution of muscle size to strength in this unique population. We examined male and female strength athletes (n=12), physique athletes (n=13) and non-trained controls (n=14). Anthropometry, maximal strength and strength endurance, and muscle cross-sectional area (ultrasound) were measured. Statistical significance was set at p<0.05. Although strength athletes excelled in their own sports, generic dynamic (leg press and arm curl one repetition maximum) or isometric knee extension torque did not differ compared to physique athletes. However, strength athletes had better muscle power in vertical jumps, while the cross-sectional area of biceps brachii was higher and body fat was lower in physique athletes. Males were more muscular and stronger, whereas females performed more repetitions in a multiple-set leg press protocol. Athletes had better strength/cross-sectional area ratios than controls only in complex tasks, but not in simple strength tasks. Partial correlation analysis with sex and training background as covariates showed that the cross-sectional area moderately explained the variance in maximal strength. In conclusion, strength athletes and physique athletes differ in sport-specific muscle size and power. In these athletes, the muscle size contributes to muscle strength. Finally, females have better strength endurance than males, independent of the training background.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"827-839"},"PeriodicalIF":2.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144012483","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

Hypoxic exercise enhances post-exercise hypotension compared to normoxic exercise. 与正常运动相比，低氧运动可增强运动后低血压。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-01 Epub Date: 2025-07-07 DOI: 10.1055/a-2602-9020

Tae-Jin Kim, Min-Hyeok Jang, Jean-Hee Han, Hyun-Chul Jung, Jung-Hyun Kim

{"title":"Hypoxic exercise enhances post-exercise hypotension compared to normoxic exercise.","authors":"Tae-Jin Kim, Min-Hyeok Jang, Jean-Hee Han, Hyun-Chul Jung, Jung-Hyun Kim","doi":"10.1055/a-2602-9020","DOIUrl":"10.1055/a-2602-9020","url":null,"abstract":"This study aimed to investigate the effect of aerobic exercise under hypoxic conditions (FiO2: 14.9%) on post-exercise hypotension compared to normoxic exercise matched for mechanical and physiological intensities. Twenty sedentary men completed three exercise sessions using a crossover design: (1) hypoxic exercise at 50% of peak power output, (2) normoxic exercise at 50% of peak power output (normoxic exercise matched for mechanical intensity), and (3) normoxic exercise with heart rates matched for hypoxic exercise. Expired gases and peripheral and muscle oxygen saturation were measured during the exercise. Blood pressure and hemodynamic variables were assessed before and after each exercise session. Hypoxic exercise and normoxic exercise matched for physiological intensity elicited higher heart rate, oxygen consumption, and ventilation compared to normoxic exercise matched for mechanical intensity (p<0.05). Hypoxic exercise showed the lowest ventilation efficiency (p<0.01) and the most severe systemic and muscle hypoxemia (p<0.01) during exercise. Only hypoxic exercise induced significant post-exercise hypotension (-6.9 mmHg; p<0.01) with a significant increase in common femoral artery diameter during recovery (p<0.05). Our findings suggested that hypoxic exercise significantly enhances post-exercise vasodilation compared to normoxic exercise, resulting in greater post-exercise hypotension. This highlighted hypoxic exercise as a promising strategy for managing hypertension with reduced mechanical stress, particularly beneficial for individuals with low exercise tolerance.","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"817-826"},"PeriodicalIF":2.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144583918","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

Correction: Autoregulated and Non-Autoregulated Blood Flow Restriction on Acute Arterial Stiffness. 更正：急性动脉硬化的自动和非自动血流限制。

IF 2.2 4区医学

International journal of sports medicine Pub Date : 2025-10-01 Epub Date: 2023-11-09 DOI: 10.1055/a-2197-7700

Nicholas Rolnick, Nicholas Licameli, Masoud Moghaddam, Lisa Marquette, Jessica Walter, Brent Fedorko, Tim Werner

引用次数: 0