International journal of sports medicine最新文献

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Parenteral Iron Therapy: Examining Current Evidence for Use in Athletes. 肠外铁治疗:检查运动员使用的现有证据。
IF 2 4区 医学
International journal of sports medicine Pub Date : 2024-06-01 Epub Date: 2023-11-14 DOI: 10.1055/a-2211-0813
Nikita Fensham, Alannah Kelly Anne McKay, Marc Sim, Peter Peeling
{"title":"Parenteral Iron Therapy: Examining Current Evidence for Use in Athletes.","authors":"Nikita Fensham, Alannah Kelly Anne McKay, Marc Sim, Peter Peeling","doi":"10.1055/a-2211-0813","DOIUrl":"10.1055/a-2211-0813","url":null,"abstract":"<p><p>A high prevalence of iron deficiency exists in athlete populations. Various mechanisms, including increased losses through sweat, haemolysis, haematuria, and gastrointestinal micro-ischemia; inadequate dietary intake; and transient exercise-induced increases in the regulatory hormone, hepcidin, contribute to the increased prevalence in athletes. Indeed, hepcidin has been shown to peak around 3-6 hours post-exercise, limiting iron absorption from the gut. As the practitioner's ability to control losses is limited, the key to treatment of iron deficiency in athletes is optimal timing of dietary and oral iron supplementation around these periods of reduced gut absorption. While timing and dosing schedule strategies might be sufficient to treat iron deficiency non-anaemia, the significant lag to impact iron status is relatively long. Therefore, in iron deficiency anaemia, the use of parenteral iron has the benefit of rapid repletion of iron stores and normalisation of haemoglobin status, while bypassing the action of hepcidin at the gut. Furthermore, newer intravenous formulations can be administered as a single total dose over 15-60 min and have a similar safety profile to oral treatment. This review discusses the existing evidence for parenteral iron use in athletes and the unique context for consideration when choosing the parenteral route in this population.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107591258","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 Resistance Training Overload Progression Protocols on Strength and Muscle Mass. 阻力训练超负荷进展方案对力量和肌肉质量的影响。
IF 2 4区 医学
International journal of sports medicine Pub Date : 2024-06-01 Epub Date: 2024-01-29 DOI: 10.1055/a-2256-5857
Talisson Santos Chaves, Maíra Camargo Scarpelli, João Guilherme Almeida Bergamasco, Deivid Gomes da Silva, Ricardo Alessandro Medalha Junior, Nathalia Fernanda Dias, Diego Bittencourt, Paulo Cesar Carello Filho, Vitor Angleri, Sanmy Rocha Nóbrega, Michael D Roberts, Carlos Ugrinowitsch, Cleiton Augusto Libardi
{"title":"Effects of Resistance Training Overload Progression Protocols on Strength and Muscle Mass.","authors":"Talisson Santos Chaves, Maíra Camargo Scarpelli, João Guilherme Almeida Bergamasco, Deivid Gomes da Silva, Ricardo Alessandro Medalha Junior, Nathalia Fernanda Dias, Diego Bittencourt, Paulo Cesar Carello Filho, Vitor Angleri, Sanmy Rocha Nóbrega, Michael D Roberts, Carlos Ugrinowitsch, Cleiton Augusto Libardi","doi":"10.1055/a-2256-5857","DOIUrl":"10.1055/a-2256-5857","url":null,"abstract":"<p><p>The aim of this study was to compare the effects of progressive overload in resistance training on muscle strength and cross-sectional area (CSA) by specifically comparing the impact of increasing load (LOADprog) versus an increase in repetitions (REPSprog). We used a within-subject experimental design in which 39 previously untrained young persons (20 men and 19 women) had their legs randomized to LOADprog and REPSprog. Outcomes were assessed before and after 10 weeks of training. Muscle strength was assessed using the one repetition maximum (1RM) test on the leg extension exercise, and the CSA of the vastus lateralis was assessed by ultrasonography. Both protocols increased 1RM values from pre (LOADprog: 52.90±16.32 kg; REPSprog: 51.67±15.84 kg) to post (LOADprog: 69.05±18.55 kg, REPSprog: 66.82±17.95 kg), with no difference between them (<i>P</i>+>+0.05). Similarly, both protocols also increased in CSA values from pre (LOADprog: 21.34±4.71 cm²; REPSprog: 21.08±4.62 cm²) to post (LOADprog: 23.53±5.41 cm², REPSprog: 23.39±5.19 cm²), with no difference between them (<i>P</i>+>+0.05). In conclusion, our findings indicate that the progression of overload through load or repetitions can be used to promote gains in strength and muscle hypertrophy in young men and women in the early stages of training.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139575281","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
Practical Aspects of Cardiopulmonary Exercise Testing in Children. 儿童心肺运动测试的实践方面。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-06-01 Epub Date: 2023-10-12 DOI: 10.1055/a-2191-0518
Tim Takken, Erik H Hulzebos
{"title":"Practical Aspects of Cardiopulmonary Exercise Testing in Children.","authors":"Tim Takken, Erik H Hulzebos","doi":"10.1055/a-2191-0518","DOIUrl":"10.1055/a-2191-0518","url":null,"abstract":"<p><p>The use of cardiopulmonary exercise testing (CPET) in pediatrics provides critical insights into potential physiological causes of unexplained exercise-related complaints or symptoms, as well as specific pathophysiological patterns based on physiological responses or abnormalities. Furthermore, CPET helps evaluate exercise performance in children with chronic (lung/heart) diseases. For instance, it can ascertain any adverse reaction to exercise and estimate the effects of specific treatment measures. It affords a global assessment of the pathophysiological patterns, responses and abnormalities to exercise that is inadequately reflected by resting lung function and/or cardiac function assessment. Clinical interpretation of the results of a CPET in pediatrics requires specific knowledge regarding pathophysiological responses and interpretative strategies that can be adapted to address concerns specific to the child's medical condition or disability.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11150037/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41201203","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
Olympic Weightlifting Training for Sprint Performance in Athletes: A Systematic Review with Meta-analysis. 奥运举重训练对短跑成绩的影响:Meta分析的系统评价。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-06-01 Epub Date: 2023-08-28 DOI: 10.1055/a-2161-4867
Kristen Crenshaw, Giorgio Zeppieri, Cheng-Ju Hung, Tania Schmitfranz, Patti McCall, Greta Castellini, Silvia Gianola, Federico Pozzi
{"title":"Olympic Weightlifting Training for Sprint Performance in Athletes: A Systematic Review with Meta-analysis.","authors":"Kristen Crenshaw, Giorgio Zeppieri, Cheng-Ju Hung, Tania Schmitfranz, Patti McCall, Greta Castellini, Silvia Gianola, Federico Pozzi","doi":"10.1055/a-2161-4867","DOIUrl":"10.1055/a-2161-4867","url":null,"abstract":"<p><p>This systematic review and meta-analysis aimed to determine whether Olympic weightlifting (OW) exercises would improve sprint performance when compared to a control intervention, (no training, standard sport-specific training, traditional resistance training, or plyometric training). Medline, Web of Science, SportDiscus, CINAHL, and Biological Science from inception to September 2022 was searched. Two authors independently selected the included studies, extracted data, and appraised the risk of bias. Certainty of the evidence was assessed using the Grading of Recommendations Assessment, Development, and Evaluation methodology. The primary meta-analysis combined the results of the sprint performance over the full length of each sprint test. The secondary meta-analyses combined the results of the sprint performance at 5, 10, and 20 m distance to capture information about the acceleration phase of the sprint tests. Eight studies with 206 athletes (female n=10, age range: 18.9-24.2 years) were identified. Sprint performance did not differ significantly comparing OW to the control intervention, nor at the full length (standardized mean difference=-0.07, 95% CI=-0.47 to 0.34, <i>p</i>=0.75, I<sup>2</sup>=46%) or during the acceleration phase (<i>p</i>≥0.26) of the sprint test. OW training does not improve sprint performance to a greater extent than comparator interventions.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11153037/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10111651","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
A Model for Causality of Pitching-related Overuse Injuries in Women's Fastpitch Softball. 女子快投垒球中与投球相关的过度运动损伤的因果关系模型》(A Model for Causality of Pitching-related Overuse Injuries in Women's Fastpitch Softball)。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-05-27 DOI: 10.1055/a-2312-5051
Kaila A Holtz, Jason L Zaremski, Joseph Janosky, Kenzie B Friesen, Gretchen D Oliver
{"title":"A Model for Causality of Pitching-related Overuse Injuries in Women's Fastpitch Softball.","authors":"Kaila A Holtz, Jason L Zaremski, Joseph Janosky, Kenzie B Friesen, Gretchen D Oliver","doi":"10.1055/a-2312-5051","DOIUrl":"https://doi.org/10.1055/a-2312-5051","url":null,"abstract":"<p><p>Fastpitch softball is a popular women's sport, and athletes, particularly pitchers, are at high risk for overuse injury. Softball-related injury rates are low; however, the prevalence of overuse injuries is high. Injuries at the high school and collegiate levels occur early in the season, and approximately 50% of shoulder and elbow injuries in softball are attributable to overuse. Survey research showed 77% of high school pitchers pitch with pain, and 73% of collegiate pitchers reported an overuse injury in the previous season. Modifiable and non-modifiable intrinsic and extrinsic risk factors contribute to injury risk in a model that can be used in history taking, clinical examination, and management of softball-related injuries. In this manuscript, we present a scoping review of fastpitch softball injury research by competitive levels from 1990 to present. We also introduce a model for overuse injury causality in this athlete population. With this information, clinicians will be able to identify risk factors related to injury in softball pitchers. More research is needed to make evidence-based recommendations for injury prevention in this athlete population.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141157632","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 Variability of the Components of Fitness along the Menstrual Cycle. 体质组成部分在月经周期中的变化。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2023-10-16 DOI: 10.1055/a-2192-8631
Santiago A Ruiz-Alias, Alejandro Pérez-Castilla, Aitor Marcos-Blanco, Claudia Moreno-Ortega, Iván Fernández-Navarrete, Felipe García-Pinillos
{"title":"The Variability of the Components of Fitness along the Menstrual Cycle.","authors":"Santiago A Ruiz-Alias, Alejandro Pérez-Castilla, Aitor Marcos-Blanco, Claudia Moreno-Ortega, Iván Fernández-Navarrete, Felipe García-Pinillos","doi":"10.1055/a-2192-8631","DOIUrl":"10.1055/a-2192-8631","url":null,"abstract":"<p><p>This study aims to determine the variability of the components of fitness along the menstrual cycle (MC) of physically active eumenorrheic women. Fifteen subjects were monitored along two consecutive MCs through the calendar-based counting method in combination with a urine luteinizing hormone surge kit. Subjects were tested at the early follicular phase (EFP), pre-ovulatory or late follicular phase (LFP), and post-ovulatory or mid-luteal phase (MLP). In each session, the back squat one-repetition maximum (1-RM), maximum fat oxidation (MFO), maximum oxygen uptake (VO<sub>2max</sub>) and acute recovery capacity were determined. The results revealed a wide variability among components of fitness and a low to high variability among subjects (acute recovery: 3.6% [range 1.5 to 9.5%]; back squat 1-RM: 6.1% [range 2.2 to 11%]; VO<sub>2max</sub>: 6.6% [range 1.1 to 15%]; MFO: 23% [range 4.6 to 35%]). Despite the individual nature, considering the number and magnitude of the responses in each MC phase, VO<sub>2max</sub> and acute recovery capacity tended to be enhanced at the LFP, the MFO at the MLP, and the back squat 1-RM remained stable along the MC. Thus, practitioners are aware of which components are susceptible to change along the MC phase, but an individual monitoring is recommended.</p>","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":"41235252","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
Difference of Knee Strength Recovery Between Revision and Primary ACL Reconstruction. 前交叉韧带翻修与初次重建在膝关节力量恢复方面的差异。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2024-01-24 DOI: 10.1055/a-2253-0103
Marc Dauty, Philippe Combes, Marie Gernigon, Pierre Menu, Vincent Crenn, Pauline Daley, Alban Fouasson-Chailloux
{"title":"Difference of Knee Strength Recovery Between Revision and Primary ACL Reconstruction.","authors":"Marc Dauty, Philippe Combes, Marie Gernigon, Pierre Menu, Vincent Crenn, Pauline Daley, Alban Fouasson-Chailloux","doi":"10.1055/a-2253-0103","DOIUrl":"10.1055/a-2253-0103","url":null,"abstract":"<p><p>Different grafting procedures are available to restore knee stability after revision anterior cruciate ligament (ACL) reconstruction. We compared knee strength recovery between ACL revision surgery and primary reconstruction. One hundred and ten patients with ACL revision surgery were matched with 110 patients with primary reconstruction based on the graft procedure. The isokinetic knee strength had been assessed for the first 9 months post-surgery. Knee laxity, function, and activity score were also evaluated. Limb symmetry index for knee extensor and flexor strength was not different at 4-, 6- and 9-months post-surgery between revision surgery and primary reconstruction. These results depended on ipsilateral or contralateral graft choice. Ipsilateral hamstring tendon (HT) and contralateral bone-patellar-tendon-bone (BPTB) graft procedures were similar for a revision of a BPTB graft failure. Contralateral HT procedure was better than ipsilateral BPTB procedure for a revision of a HT graft failure. The early recovery of isokinetic knee strength after ACL revision surgery regardless of the HT or BPTB procedures, was similar to the recovery after primary ACL reconstruction with the same graft technique. These results apparently depended on a temporary quadriceps arthrogenic muscle inhibition and on a persistent donor site morbidity, concerning the new and the previous grafts, respectively.</p>","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":"139544929","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
An Epidemiologic Comparison of Injuries to Skiers and Snowboarders Treated at United States Emergency Departments, 2000-2019. 2000-2019 年美国急诊科治疗的滑雪和单板滑雪伤害。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2024-01-08 DOI: 10.1055/a-2240-7747
Naomi Kelley, Lauren Pierpoint, Anahita Saeedi, Justin E Hellwinkel, Morteza Khodaee
{"title":"An Epidemiologic Comparison of Injuries to Skiers and Snowboarders Treated at United States Emergency Departments, 2000-2019.","authors":"Naomi Kelley, Lauren Pierpoint, Anahita Saeedi, Justin E Hellwinkel, Morteza Khodaee","doi":"10.1055/a-2240-7747","DOIUrl":"10.1055/a-2240-7747","url":null,"abstract":"<p><p>Skiing and snowboarding are popular competitive and recreational sports that can be associated with significant injury. Previous studies of skiing and snowboarding injuries have been conducted, but studies evaluating injury types and patterns over long periods of time are needed to drive effective injury prevention efforts. We hypothesized that injury patterns would differ among snowboarders and skiers and that the number of injuries remained constant over time. This is a retrospective study of patients presenting with skiing or snowboarding injuries to the United States emergency departments from 2000 to 2019. A total of 34,720 injured skiers (48.0%) and snowboarders (52.0%) presented to US emergency departments over a 20-year period, representing an estimated 1,620,576 injuries nationwide. There is a decreasing trend of the number of injuries over the study period (<i>p</i>=0.012). Males represented the majority (65.7%) of injuries. Skiers were older than snowboarders (mean 30.1 vs. 20.0 years; <i>p</i><0.001) and patients aged<18 represented more snowboarding (57.0%) than skiing (43.0%) injuries (<i>p</i><0.001). Common diagnoses included fractures (33.0%) and sprains/strains (26.9%). Snowboarders primarily presented with upper extremity injuries, meanwhile, skiers primarily presented with lower extremity injuries. Most patients (93.2%), were treated and discharged from the emergency departments. Understanding the epidemiology of injuries presenting to emergency departments can help guide prehospital care and medical coverage allocation for resorts and event organizers, as well as identifying areas for targeted injury prevention efforts.</p>","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":"139402783","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 Eccentric Phase Velocity on Bench Press Concentric Bar Velocity in the Young and Elderly. 偏心阶段速度对年轻人和老年人卧推同心杆速度的影响。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2024-02-12 DOI: 10.1055/a-2235-1694
Antenor Calandrini, Eduardo Macedo Penna, Elren Passos Monteiro, Daniel Boullosa, Victor Silveira Coswig
{"title":"Effects of Eccentric Phase Velocity on Bench Press Concentric Bar Velocity in the Young and Elderly.","authors":"Antenor Calandrini, Eduardo Macedo Penna, Elren Passos Monteiro, Daniel Boullosa, Victor Silveira Coswig","doi":"10.1055/a-2235-1694","DOIUrl":"10.1055/a-2235-1694","url":null,"abstract":"<p><p>This study aimed to investigate the impact of bar velocity during the eccentric phase on subsequent concentric performance in the young and elderly. Twelve elderly women (65.2+4.2 years) and 16 young women (23.1+2.1 years) were randomly assigned to four experimental conditions that combined high-velocity eccentric actions (HV<sub>ECC</sub>; maximum velocity) and moderate-velocity eccentric actions (MV<sub>ECC</sub>; 2.0 s), using 30% and 60% of their 1-repetition maximum (1RM) on the Smith machine bench press. Measurements of mean propulsive velocity (MPV), peak velocity (PV), and mean power (MP) were recorded. Two-way ANOVA with repeated measures was applied for each variable, when needed, the Bonferroni post hoc was used. Statistical significance was set at p<0.05, and effect size (ES) was established by Cohen's <i>d</i> <sub>z</sub>. The results demonstrated that elderly women showed improved performance in MPV (+10.0%; ES=- 0.58; p=0.009) and MP (+11.7%; ES=- 0.14; p=0.045) when utilizing HV<sub>ECC</sub> at 30% 1RM only. Moreover, young women exhibited superior performance for both 30% and 60% 1RM when using HV<sub>ECC</sub> for all variables analyzed (p<0.05). The HV<sub>ECC</sub> appears to have an impact on the subsequent performance of the concentric phase, particularly when lighter loads (30% 1RM) are utilized, regardless of the age group.</p>","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":"139722561","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
Reliability of Anaerobic Contributions during a Single Exhaustive Knee-extensor Exercise. 单次膝关节伸肌力竭运动中无氧贡献的可靠性。
IF 2.5 4区 医学
International journal of sports medicine Pub Date : 2024-05-01 Epub Date: 2023-11-08 DOI: 10.1055/a-2207-2578
Gabriel Luches-Pereira, Carlos Augusto Kalva-Filho, Danilo Rodrigues Bertucci, Carlos Dellavechia de Carvalho, Ricardo Augusto Barbieri, Marcelo Papoti
{"title":"Reliability of Anaerobic Contributions during a Single Exhaustive Knee-extensor Exercise.","authors":"Gabriel Luches-Pereira, Carlos Augusto Kalva-Filho, Danilo Rodrigues Bertucci, Carlos Dellavechia de Carvalho, Ricardo Augusto Barbieri, Marcelo Papoti","doi":"10.1055/a-2207-2578","DOIUrl":"10.1055/a-2207-2578","url":null,"abstract":"<p><p>The total anaerobic contribution (AC<sub>[La-]+PCr</sub>) is a valid and reliable methodology. However, the active muscle mass plays an important role in the AC<sub>[La-]+PCr</sub> determination, which might influence its reliability. Thus, this study aimed to investigate the effects of two exhaustive intensities on the reliability of the AC<sub>[La-]+PCr</sub> during a one-legged knee extension (1L-KE) exercise. Thirteen physically active males were submitted to a graded exercise to determine the peak power output (PPO) in the 1L-KE. Then, two constant-load exercises were conducted to task failure at 100% (TTF<sub>100</sub>) and 110% (TTF<sub>110</sub>) of PPO, and the exercises were repeated on a third day. The blood lactate accumulation and the oxygen uptake after exercise were used to estimate the anaerobic lactic and alactic contributions, respectively. Higher values of AC<sub>[La-]+PCr</sub> were found after the TTF<sub>100</sub> compared to TTF<sub>110</sub> (p=0.042). In addition, no significant differences (p=0.432), low systematic error (80.9 mL), and a significant ICC (0.71; p=0.004) were found for AC<sub>[La-]+PCr</sub> in the TTF<sub>100</sub>. However, an elevated coefficient of variation was found (13.7%). In conclusion, we suggest the use of the exhaustive efforts performed at 100% of the PPO with the 1L-KE model, but its elevated individual variability must be carefully considered in future studies.</p>","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":"71521430","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
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