International journal of sports physiology and performance最新文献_第3页

Invisible Monitoring for Athlete Health and Performance: A Call for a Better Conceptualization and Practical Recommendations.

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-24 DOI: 10.1123/ijspp.2024-0292

Cedric Leduc, Daniel Weaving

{"title":"Invisible Monitoring for Athlete Health and Performance: A Call for a Better Conceptualization and Practical Recommendations.","authors":"Cedric Leduc, Daniel Weaving","doi":"10.1123/ijspp.2024-0292","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0292","url":null,"abstract":"Background: Practices to routinely monitor athletes are rapidly changing. With the concurrent exponential rise in wearable technologies and advanced data analysis, tracking training exposures and responses is widespread and more frequent in the athlete-coach decision-making process. Within this scenario, the concept of invisible monitoring emerged, which was initially vaguely defined as testing athletes without testing them. Despite sound practical applications and benefits (eg, reduced burden on player staff and more frequent measurement), a clear lack of constitutive definition has led to multiple cleavages in both research and practice, including ethical concerns.Purpose: The purpose of this study is to (1) extend the current conceptualization of invisible monitoring by considering subdimensions of the concept and (2) its data-related and ethical challenges and (3) provide practical considerations to implement invisible monitoring. Monitoring burden (degree of obtrusion and frequency of measurement) and the number of constructs a single measurement tool can assess have been proposed as subdimensions of the concept of invisible monitoring. Challenges include the governance and analysis of data required to make estimates, validity and reliability of an invisible monitoring measure, and communication to athletes.Conclusions: This commentary presents a first attempt to conceptualize invisible monitoring in the context of elite sport and provide subdimensions of the concept that can be used to classify choices of measurement tools. A consensus is required from both researchers and practitioners regarding its definition and operationalization to optimize current monitoring services to elite athletes.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-5"},"PeriodicalIF":3.5,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143038847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Squash in Los Angeles: Heat Strain and Performance Considerations at the 2028 Olympic Games. 洛杉矶壁球：2028年奥运会的热负荷和表现考虑。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-21 DOI: 10.1123/ijspp.2024-0355

Mohammed Ihsan, Vincent Kwok, Ho Yi Wong, Olivier Girard, Carl James

{"title":"Squash in Los Angeles: Heat Strain and Performance Considerations at the 2028 Olympic Games.","authors":"Mohammed Ihsan, Vincent Kwok, Ho Yi Wong, Olivier Girard, Carl James","doi":"10.1123/ijspp.2024-0355","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0355","url":null,"abstract":"Background: The Los Angeles 2028 Olympics will mark the debut of squash, a high-intensity sport characterized by repeated efforts, posing potential thermoregulatory challenges. The demanding nature of squash results in substantial metabolic heat production, with consequential heat strain exacerbated by the indoor environment of squash courts, where low to moderate evaporative potential limits effective cooling. Players often experience increased body-heat storage and thermal strain, with muscle cramps (an early warning sign of more severe heat-related illnesses) commonly observed during tournaments. Despite these challenges, there are limited data on the thermoregulatory responses of elite squash players during match play.Purpose: We discuss the thermoregulatory challenges faced by squash players and highlight key areas for research. Additionally, practical guidelines are provided for practitioners preparing squash players for the Los Angeles 2028 Olympics.Evidence: Preliminary findings from international squash tournaments reveal that elite players endure significant physiological strain, with core temperatures rising to 39.0 °C to 40.1 °C, despite matches being played in mild wet-bulb globe temperatures of 19.4 °C (0.9 °C). Sustained heart rates exceeding 90% of maximal heart rate further compound this thermal strain. However, research on how thermal strain affects squash-specific fitness, recovery, and stroke mechanics are lacking. Such information is crucial for evaluating the need and effectiveness of tailored mitigation strategies such as heat training/exposures and precooling and midcooling during warm-up and match play.Conclusion: Systematic research into the thermal demands of squash and their impact on fitness and skills is needed. These insights can inform evidence-based strategies to safeguard athlete well-being and optimize performance at Los Angeles 2028.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-4"},"PeriodicalIF":3.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143004927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Improving the Use of Lifting Velocity to Predict Repetitions to Failure: A Systematic Review. 改进使用提升速度来预测重复失败：系统回顾。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-21 DOI: 10.1123/ijspp.2024-0337

Sergio Miras-Moreno, Alejandro Pérez-Castilla, Jonathon Weakley, Francisco J Rojas-Ruiz, Amador García-Ramos

{"title":"Improving the Use of Lifting Velocity to Predict Repetitions to Failure: A Systematic Review.","authors":"Sergio Miras-Moreno, Alejandro Pérez-Castilla, Jonathon Weakley, Francisco J Rojas-Ruiz, Amador García-Ramos","doi":"10.1123/ijspp.2024-0337","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0337","url":null,"abstract":"Background: A recent advancement in velocity-based training involves estimating the maximum number of repetitions to failure (RTF) by analyzing the fastest velocity recorded within a set. A systematic review examining the fundamental characteristics of the RTF-velocity relationship is still lacking.Purpose: This study aimed to (1) determine the basic properties of the RTF-velocity relationships (goodness of fit, reliability, and accuracy) and (2) offer guidance on implementing various methodological factors that can impact the RTF accuracy prediction.Methods: Data were sourced from 3 databases: PubMed, SPORTDiscus, and Scopus. Studies were qualified for inclusion if they involved at least 2 sets performed to failure with different loads, utilized multijoint weight-lifting exercises, and monitored the RTF and fastest velocity for each set.Results: Six studies demonstrated (1) robust goodness of fit, (2) acceptable to high between-sessions reliability for the velocities associated to each RTF (1-15 RTF), and (3) acceptable RTF prediction accuracy during fatigue-free sessions (long interset rest), but, when fatigued (ie, short interset rest) the accuracy was compromised except for athletes with high training experience (eg, >2 y training-to-failure experience).Conclusions: The relationship properties remain unaffected regardless of the exercise (upper- vs lower-body), equipment (Smith- vs free-weight), velocity variable (mean and peak velocity), and resting time (from 5 to 10 min). However, the modeling procedure used (multiple- vs 2-point) did alter the accuracy. The individualized RTF-velocity relationships can be constructed through a linear regression model, but the failure experience seems to be a critical factor to increase its accuracy.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-10"},"PeriodicalIF":3.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143004922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Impact of Ankle Plantar-Flexor Muscle Strength on Sprint Acceleration in Floorball Players. 踝关节跖屈肌力量对地板运动员冲刺加速的影响。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-21 DOI: 10.1123/ijspp.2024-0272

Līga Vecbērza, Zane Šmite, Līga Plakane, Ilvis Ābeļkalns

{"title":"The Impact of Ankle Plantar-Flexor Muscle Strength on Sprint Acceleration in Floorball Players.","authors":"Līga Vecbērza, Zane Šmite, Līga Plakane, Ilvis Ābeļkalns","doi":"10.1123/ijspp.2024-0272","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0272","url":null,"abstract":"Purpose: Speed is a crucial physical characteristic where each lower-limb ankle plantar-flexor (PF) muscle needs to generate significant force; however, there is limited evidence about the relationship between single-limb isometric, and reactive strength forms, and linear sprint. The aim of this study was to determine the impact of the maximal unilateral isometric strength of the ankle PF muscle and reactive strength on sprint acceleration performance.Material and methods: Thirty-two male floorball players (mean [SD] age 20.3 [3.0] y, height 181.5 [8.5] cm, body mass 77.4 [12.2] kg, and body mass index 22.3 [2.8]) from 2 clubs in the highest division in Latvia performed 20-m linear sprint, unilateral 10/5 repeated jump (reactive strength index [RSI]), ankle-dorsiflexion range of motion, and isometric seated plantar-flexion strength tests, where all data were used for correlational analysis.Results: Unilateral RSI was associated with 20-m sprint time (r = -.52, P < .01) and average speed from 10 to 20 m (r = .72, P < .01). Relative PF strength was associated with unilateral RSI (r = .35, P < .05) and 20-m sprint time (r = -.36, P < .05), whereas ankle-dorsiflexion range of motion was associated with unilateral RSI jump height (r = .47, P < .05).Conclusions: Floorball athletes with higher unilateral RSI and isometric PF muscle strength tend to accelerate faster, but subjects with better ankle-dorsiflexion range of motion jump higher in vertical repeated jumps. These findings suggest that both reactive and isometric strength are key indicators for sprint acceleration performance in floorball athletes, providing coaches with tools to monitor and improve performance.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-6"},"PeriodicalIF":3.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143004930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Future Directions in Understanding Acute and Chronic Effects of Mental Fatigue in Sports: A Commentary on Bridging Laboratory Findings and Real-World Applications. 了解运动中精神疲劳的急性和慢性影响的未来方向：对衔接实验室发现和现实世界应用的评论。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-21 DOI: 10.1123/ijspp.2024-0363

Hui Kwan Nicholas Lam, John Sproule, Shaun M Phillips

{"title":"Future Directions in Understanding Acute and Chronic Effects of Mental Fatigue in Sports: A Commentary on Bridging Laboratory Findings and Real-World Applications.","authors":"Hui Kwan Nicholas Lam, John Sproule, Shaun M Phillips","doi":"10.1123/ijspp.2024-0363","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0363","url":null,"abstract":"Background: Mental fatigue (MF) is a psychobiological state that could negatively impact physical and cognitive performance, although the extent of this impact remains controversial. While laboratory studies have provided valuable insights into the acute effects of MF, their ecological validity in real-world sport settings remains limited. Recent research indicates that MF can naturally arise during sport activities, leading to chronic effects on endurance and perceptual-cognitive skills. These effects may persist beyond individual sessions, potentially increasing the risk of injury due to their cumulative nature.Purpose: This commentary aims to guide future research by emphasizing the need to investigate the natural occurrence and chronic effects of MF in applied sport settings.Conclusions: Understanding how MF develops and manifests in real-world settings, particularly individual differences in perception and response, is crucial for creating more effective management strategies. Addressing these factors will enable better support for athletes who may experience prolonged periods of MF that could affect their training and competitive performance. Future research should prioritize studying MF in natural sport settings to enhance the ecological validity of findings. By focusing on the chronic and cumulative nature of MF, as well as individual variability, researchers can develop more tailored and effective strategies for managing MF. This research will not only bridge the gap between laboratory studies and real-world applications but also contribute to more precise monitoring and intervention techniques. Ultimately, these advancements will improve athletes' ability to maintain peak performance and reduce the risk of injury, thereby enhancing overall athletic well-being.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-5"},"PeriodicalIF":3.5,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143004713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Does Core Training Improve Agility Performance in Soccer Players With Groin Pain? A Randomized, Single-Blind Study. 核心训练能提高腹股沟疼痛的足球运动员的敏捷性吗？一项随机、单盲研究。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-17 DOI: 10.1123/ijspp.2024-0259

Fatma Chaari, Abderrahmane Rahmani, Nicolas Peyrot, Mohamed A Harrabi, Thouraya Fendri, Haithem Rebai, Sébastien Boyas, Sonia Sahli

{"title":"Does Core Training Improve Agility Performance in Soccer Players With Groin Pain? A Randomized, Single-Blind Study.","authors":"Fatma Chaari, Abderrahmane Rahmani, Nicolas Peyrot, Mohamed A Harrabi, Thouraya Fendri, Haithem Rebai, Sébastien Boyas, Sonia Sahli","doi":"10.1123/ijspp.2024-0259","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0259","url":null,"abstract":"Context: Agility is crucial for soccer players, and core training can improve it. One study showed significant agility improvements after an intervention including core training for athletes with groin pain. However, it is unclear if these improvements resulted specifically from the core exercises or the entire program. Additionally, the study lacked a control group, making the findings inconclusive.Purpose: The current study aimed to explore the effect of core training, previously reported in the context of groin-pain rehabilitation, on agility performance in soccer players with groin pain.Methods: Twenty soccer players with groin pain volunteered to participate. They were randomly assigned to a core training group (n = 10) and a control group (n = 10). Before and immediately after that period, agility performance (T test and Edgren Side Step Test) and self-reported outcomes (Copenhagen Hip and Groin Outcome Score) were assessed in both groups.Results: No significant session × group interaction was observed in agility T test (F = 2.55; P = .12; ηp2=.12) and Edgren Side Step Test (F = 3.18; P = .09; ηp2=.15) performances. Besides, Copenhagen Hip and Groin Outcome scores showed significant improvements (P = .007 to <.001) in the core training group following the 12 weeks of core training and compared with the control group.Conclusion: The results showed that soccer players with groin pain who received or did not receive core training showed similar agility performance. However, significant improvements in self-reported outcomes were observed in soccer players compared with the control group. Clinicians and coaches should therefore consider core training when designing training and rehabilitation programs for this population to enhance recovery.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-8"},"PeriodicalIF":3.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143004162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Selected Immunoendocrine and Physiological Performance Adaptations to Different Volume of Upper-Body Plyometric Training in National-Level Male Volleyball Players. 国家级男子排球运动员不同上肢增力训练量对免疫内分泌和生理表现的适应性

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-13 DOI: 10.1123/ijspp.2024-0229

Changfeng Ning, Mohsen Sheykhlouvand

{"title":"Selected Immunoendocrine and Physiological Performance Adaptations to Different Volume of Upper-Body Plyometric Training in National-Level Male Volleyball Players.","authors":"Changfeng Ning, Mohsen Sheykhlouvand","doi":"10.1123/ijspp.2024-0229","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0229","url":null,"abstract":"Purpose: This study aimed to investigate the impact of a 6-week upper-body plyometric-training (PT) program with varying volumes on the immunoendocrine, physiological parameters, and physical performance adaptations in male volleyball players.Methods: Twenty-four trained college players were randomly allocated into 3 groups with 8 participants. Each group performed 5 exercises at maximal effort with differences in volume: low (3 sets of 7 repetitions), moderate (3 sets of 10 repetitions), and high (3 sets of 13 repetitions). The training program lasted 6 weeks with participants undertaking 3 sessions of PT per week.Results: Following the intervention, all groups exhibited significant (P = .001) improvements in physical and physiological parameters, as well as skill-based performances, with effect sizes ranging from small to very large. Comparative analysis of individual changes indicated that the high-volume group resulted in greater adaptive responses in the medicine-ball throw (P = .004), peak (P = .001) and average (P = .022) power output, push-ups (P = .001), and strength (P = .032) compared with the low-volume group. No significant between-groups difference (P > .05) was observed regarding immunoendocrine measures, reaction time, attacking, and serving skills.Conclusions: The findings indicate that short-term upper-body PT positively influenced performance adaptations, emphasizing that the adaptive response to PT depends on the varying volumes. The study proposes that integrating higher volumes of PT results in more significant adaptive responses among volleyball players with the same immunoendocrine responses as the other training volumes.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-9"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142978445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Physiological Responses of Elite Cheerleaders During Training and Simulated Competition Routines. 精英啦啦队员在训练和模拟比赛中的生理反应。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-09 DOI: 10.1123/ijspp.2024-0269

Saida Riddell, Christoph Zinner, Sean M Lubiak, Gillian Tiralla, Travis Foster, Nauris Tamulevicius, Oliver J Quittmann, Martin Lange, Simon Gavanda

{"title":"Physiological Responses of Elite Cheerleaders During Training and Simulated Competition Routines.","authors":"Saida Riddell, Christoph Zinner, Sean M Lubiak, Gillian Tiralla, Travis Foster, Nauris Tamulevicius, Oliver J Quittmann, Martin Lange, Simon Gavanda","doi":"10.1123/ijspp.2024-0269","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0269","url":null,"abstract":"Purpose: Competitive cheerleading (cheersport) is a physically demanding sport; however, there is a lack of information regarding its acute physiological responses during training or competition in these athletes. Thus, this study aimed to investigate these responses during both training sessions and simulated cheerleading competition routines (full-outs) among elite cheersport athletes.Methods: Six Coed and 10 All Girl elite cheerleaders were included in this study. Countermovement-jump (CMJ) height and blood lactate concentration were measured prepractice, after warm-up, after a full-out, and at the end of the training session. Heart rate (HR) was monitored throughout all the sessions. One-way analysis of variance was used to analyze changes over time.Results: Most of the training time (51%-68%) was spent between 50% and 69% maximum HR. Only 3% to 4% was spent above 90% HRmax. During full-outs, most of the time (67%-80%), HR was ≥80% maximum HR. The blood lactate concentration was significantly elevated post-full-out (6.4 [1.6] mmol/L) compared with pretraining and post-warm-up (P < .001). In addition, blood lactate concentration was higher after training (3.4 [2.2] mmol/L) compared with prepractice and post-warm-up (P ≤ .025). CMJ height did not change over time (P ≤ .268).Conclusion: Cheersport training leads to a low overall metabolic demand but is interspersed with short, high-intensity \"intervals.\" The highest intensities were achieved during full-outs, indicating the anaerobic nature of competition routines. Therefore, cheerleaders should train both the aerobic and the anaerobic systems to increase recovery capacity between drills and to maximize anaerobic power during competition.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-8"},"PeriodicalIF":3.5,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142948867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Lactate Threshold and Swimming Performance in World-Class Open-Water Swimmers. 世界级开放水域游泳运动员乳酸阈值与游泳表现。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-09 Print Date: 2025-02-01 DOI: 10.1123/ijspp.2024-0342

Óscar López-Belmonte, Roberto Baldassarre, Jesús J Ruiz-Navarro, Marco Bonifazi, Raúl Arellano, Maria Francesca Piacentini

{"title":"Lactate Threshold and Swimming Performance in World-Class Open-Water Swimmers.","authors":"Óscar López-Belmonte, Roberto Baldassarre, Jesús J Ruiz-Navarro, Marco Bonifazi, Raúl Arellano, Maria Francesca Piacentini","doi":"10.1123/ijspp.2024-0342","DOIUrl":"10.1123/ijspp.2024-0342","url":null,"abstract":"Purpose: The assessment of lactate threshold (LT) and its relationship to open-water (OW) performance is crucial. This study aimed (1) to analyze LT in world-class OW swimmers, (2) to compare swimming speed at LT (SSLT) and 4 mmol·L-1 of blood lactate concentration ([La-]; SS4), and (3) to examine the relationships between SSLT and swimming performance.Methods: Twenty world-class and elite (11 male, 26.4 [3.0] y; 9 female, 25.8 [3.6] y) OW swimmers voluntarily participated. A total of 46 (29 male and 17 female) intermittent incremental tests (7 × 400 m) conducted in a 50-m pool were analyzed. Seasonal best performances on 400-, 800-, and 1500-m and 10-km OW swimming events were obtained.Results: The SSLT was 1.62 (0.02) (3.8 [1.0] mmol·L-1) and 1.46 (0.04) m·s-1 (3.0 [0.7] mmol·L-1) in males and females, respectively, which corresponded to 97% of the peak speed reached in the tests. There were no differences (P = .148) between SSLT and SS4 in males; however, SSLT was lower (P = .019) than SS4 in females. The SSLT was negatively correlated with swimming performance, with the exception of 10-km OW and 400-m times in males and females, respectively.Conclusions: World-class and elite OW swimmers exhibited a greatly developed aerobic capacity with LT close to their maximum speed. The SS4 could be used as an approximation to SSLT in males but overestimates true aerobic capacity in females. LT is a useful tool for assessing performance, as OW swimmers with higher SSLT showed better swimming performance.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"309-315"},"PeriodicalIF":3.5,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142948865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Determination of Ventilatory Thresholds Using Near-Infrared Spectroscopy in Recreational Endurance and CrossFit Athletes. 利用近红外光谱测定休闲耐力和综合健身运动员的通气阈值。

IF 3.5 2区医学

International journal of sports physiology and performance Pub Date : 2025-01-08 DOI: 10.1123/ijspp.2024-0265

Janik Arnet, Raphael Knaier, Raphael Schoch, Gommaar D'Hulst, Fabienne Bruggisser, Andri Feldmann, Rahel Leuenberger, Elena Westerhuis, Denis Infanger, Arno Schmidt-Trucksäss, Jonathan Wagner

{"title":"Determination of Ventilatory Thresholds Using Near-Infrared Spectroscopy in Recreational Endurance and CrossFit Athletes.","authors":"Janik Arnet, Raphael Knaier, Raphael Schoch, Gommaar D'Hulst, Fabienne Bruggisser, Andri Feldmann, Rahel Leuenberger, Elena Westerhuis, Denis Infanger, Arno Schmidt-Trucksäss, Jonathan Wagner","doi":"10.1123/ijspp.2024-0265","DOIUrl":"https://doi.org/10.1123/ijspp.2024-0265","url":null,"abstract":"To define training zones, ventilatory thresholds (VTs) are commonly established by cardiopulmonary gas-exchange analysis during incremental exercise tests. Portable near-infrared spectroscopy (NIRS) devices have emerged as a potential tool for detecting these thresholds by monitoring muscle oxygenation. This study evaluated the accuracy of NIRS measurements to determine VTs or critical power (CP) based on muscle oxygen saturation and assesses the device's consistency across 2 constant-load tests. Data from 2 cross-sectional studies involving trained recreational endurance athletes (26 from study 1) and CrossFit athletes (59 from study 2) were examined. Incremental ramp tests on a cycle ergometer were performed and followed by either a constant-load test (study 1) or a CP test (study 2). When comparing power output or heart rate between NIRS-derived breakpoints and VTs, weak to moderate agreement was found. Mean differences in power output and heart rate ranged from 16.8 to 22.4 W and 3.8 to 6.0 beats·min-1 at the first threshold and 27.4 to 31.2 W and 7.1 to 7.8 beats·min-1 at the second threshold. Comparing with CP, mean differences ranged from -0.4 to 0.4 W and -0.6 to 0.9 beats·min-1. Test-retest reliability showed moderate agreement, with a mean bias of 1.2 percentage points between constant-load tests. Thus, NIRS may not be accurate for determining VTs or CP during exercise due to limited agreement in power output or hear rate, notable variability on individual level, and moderate reproducibility.","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-10"},"PeriodicalIF":3.5,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142948775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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