Journal of Sports Sciences最新文献

Validity and normative scores of finger flexor strength and endurance tests estimated from a large sample of female and male climbers.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2025-01-04 DOI: 10.1080/02640414.2024.2449316

Patrik Berta, Michail Michailov, Dávid Kaško, Jan Gajdošík, Michal Běhounek, Jiří Baláš

{"title":"Validity and normative scores of finger flexor strength and endurance tests estimated from a large sample of female and male climbers.","authors":"Patrik Berta, Michail Michailov, Dávid Kaško, Jan Gajdošík, Michal Běhounek, Jiří Baláš","doi":"10.1080/02640414.2024.2449316","DOIUrl":"https://doi.org/10.1080/02640414.2024.2449316","url":null,"abstract":"Recent reviews have highlighted conflicting findings regarding the validity of finger flexor strength and endurance tests in sport climbers, often due to small sample sizes and low ecological validity of the tests used. To address these gaps, 185 male and 122 female climbers underwent maximal finger flexor strength, intermittent and continuous finger flexor endurance, and the finger hang tests in a sport-specific setting to determine the predictive and concurrent validity of these tests. The finger hang test showed the strongest relationship to climbing ability for both sexes (R ≈ 0.75). However, despite its widespread use as an endurance test, the finger hang was found to be primarily determined by finger strength, explaining 65% and 80% of the variance in males and females, respectively. Finger strength emerged as the dominant factor, explaining the majority of variance in climbing ability (males 68%; females 64%), followed by intermittent endurance (males 28%; females 34%). These findings emphasize finger strength as the primary predictor of climbing ability and highlight the importance of intermittent endurance testing for assessing climbing-specific endurance of the finger flexors. No significant differences were found between male and female climbers in finger flexor strength and endurance when normalized to body mass.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-11"},"PeriodicalIF":2.3,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142927363","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

Low and high frequency isometric handgrip exercise training similarly reduce resting blood pressure in young normotensive adults: A randomised controlled trial.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2025-01-04 DOI: 10.1080/02640414.2024.2448638

Y C Chen, C Y Cheng, B McNally, J Benn, H Varnom, K Robbins, R S Metcalfe

{"title":"Low and high frequency isometric handgrip exercise training similarly reduce resting blood pressure in young normotensive adults: A randomised controlled trial.","authors":"Y C Chen, C Y Cheng, B McNally, J Benn, H Varnom, K Robbins, R S Metcalfe","doi":"10.1080/02640414.2024.2448638","DOIUrl":"https://doi.org/10.1080/02640414.2024.2448638","url":null,"abstract":"We investigated the effects of low and high frequency isometric handgrip exercise training (IHGT) on resting blood pressure, and the affective/perceptual responses during training. Sixty young normotensive adults were randomised to either a no-intervention control group (CON: n = 20; 12 female) or a group performing either two (LOW: n = 20; 18 female) or four (HIGH: n = 20; 13 female) sessions/week of IHGT for 4 weeks. IHGT involved 4 × 2-min holds at 30% maximal voluntary contraction using the dominant hand. Resting blood pressure was measured before and after training. Affective valence was measured during the first session of each training week. Systolic blood pressure was reduced following both LOW (adjusted mean change [95% CI]: -4.5 [-6.8, -2.2] mmHg) and HIGH (-5.3 [-7.6, -3.0] mmHg) frequency IHGT groups compared to CON (+0.5 [-1.8, 2.8] mmHg; p < 0.01), with no difference between LOW and HIGH. There were no changes in diastolic blood pressure. During the first session, affective valence decreased by 2.5 ± 2.6 units and became negative (lowest affect: -0.75 ± 1.84 units). However, affective responses improved as training progressed. Low and high frequency IHGT similarly reduce resting blood pressure in young normotensive adults. Negative affective responses in the early phase of training improve as the intervention progresses.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-11"},"PeriodicalIF":2.3,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142927286","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

Inclined distance running at iso-efficient speeds: Effect on joint work.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2025-01-01 DOI: 10.1080/02640414.2024.2440675

George M Pamboris, Alexis K Nelson, Lauren Williams, Hailey B Fong, Siena Senatore, Samuel M Lyons, Shelby Peel, Tyler Sandiford, Douglas W Powell

{"title":"Inclined distance running at iso-efficient speeds: Effect on joint work.","authors":"George M Pamboris, Alexis K Nelson, Lauren Williams, Hailey B Fong, Siena Senatore, Samuel M Lyons, Shelby Peel, Tyler Sandiford, Douglas W Powell","doi":"10.1080/02640414.2024.2440675","DOIUrl":"https://doi.org/10.1080/02640414.2024.2440675","url":null,"abstract":"Runners often reduce their pace during inclined running to maintain a constant metabolic workload, known as iso-efficiency speed (a speed-incline combination with the same metabolic intensity as level running). This study investigates changes in lower extremity (LE) joint work profiles when running on an incline at iso-efficiency speed. Eleven collegiate distance runners completed a treadmill running task under three conditions (0%, 4%, and 8% incline). Running velocity was reduced with increasing incline to ensure a consistent metabolic workload across conditions. An 8-camera motion capture system and an instrumented treadmill collected kinematics and ground reaction forces. Visual 3D was used to calculate ankle, knee, and hip joint powers, while custom software (MATLAB) calculated ankle, knee, and hip joint positive and negative work values. A significant increase in LE total positive work was attributed to greater ankle and hip joint positive work with steeper inclines. Reduced LE total negative work resulted from lower knee and hip joint negative work as incline increased. Results suggest that at iso-efficiency speeds, inclined treadmill running increases eccentric demands on the ankle joint and concentric demands on the ankle and hip joints, benefiting training programmes to optimize cardiorespiratory stimuli while reducing mechanical demand on specific extremity structures.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-6"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142915218","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

Individual sex-based variability to altitude training in elite badminton players.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2025-01-01 DOI: 10.1080/02640414.2024.2448358

Camille Précart, Janne Bouten, Caroline Giroux, Antonio Morales-Artacho, Quentin Rousseau, Giuseppe Rabita, Enzo Hollville, Jaime De la Calle-Herrero, Franck Brocherie

{"title":"Individual sex-based variability to altitude training in elite badminton players.","authors":"Camille Précart, Janne Bouten, Caroline Giroux, Antonio Morales-Artacho, Quentin Rousseau, Giuseppe Rabita, Enzo Hollville, Jaime De la Calle-Herrero, Franck Brocherie","doi":"10.1080/02640414.2024.2448358","DOIUrl":"https://doi.org/10.1080/02640414.2024.2448358","url":null,"abstract":"To assess how altitude training impacts force-velocity-power (F-V-P) profiling and muscular power and anaerobic capacity in elite badminton players in reference to intra- and inter-individual sex-based variability. Following a quasi-experimental design, 14 players (6 females, 8 males) from the French national badminton singles and doubles teams performed a 3-week 'living high-training high' camp at natural altitude (2320 m). F-V-P profile and Wingate anaerobic test were assessed Pre- and Post-intervention, using ANOVA repeated measures conventional statistics, with further estimation statistics to show the magnitude of the testing condition and visualize intra- and inter-individual responses. No significant interaction nor time effect (Pre- vs. Post-) was observed for any variables (all p > 0.05), but a significant sex effect was observed for maximal theoretical velocity (p < 0.01), relative maximal theoretical power (Pmaxrel) (p = 0.02) and relative F-V-P profile and for peak and mean power outputs (both p < 0.001) during Wingate test. Pre-to-Post changes (from -11.0% to + 14.4%) did not significantly differ between sexes, except for Pmaxrel (p < 0.05) in favor of female athletes (+10.2% vs. -4.3% for male athletes). Hedge's g effect sizes (male minus female) revealed moderate and large effects for F-V-P profiling-derived variables. Mean conventional statistics did not reveal significant effect of altitude training, mainly due to high intra- and inter-variability across F-V-P profiling-derived variables and Wingate test. Substantial sex-based difference contributes to this variability, emphasizing the importance of individualized approach to enhance participant responsiveness to altitude training.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-6"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142915220","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

Game-related statistics for distinguishing winning and losing teams in Olympic basketball: The impact of game pace.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2025-01-01 DOI: 10.1080/02640414.2024.2448360

Ruobing Chen, Mingxin Zhang, Xiao Xu, Yongfeng Liu

{"title":"Game-related statistics for distinguishing winning and losing teams in Olympic basketball: The impact of game pace.","authors":"Ruobing Chen, Mingxin Zhang, Xiao Xu, Yongfeng Liu","doi":"10.1080/02640414.2024.2448360","DOIUrl":"https://doi.org/10.1080/02640414.2024.2448360","url":null,"abstract":"The pace of play, a critical tactical element in basketball, significantly influences offensive and defensive strategies. This study aimed to identify statistical indicators that differentiate winners from losers across varying game paces using a sample of 90 Olympic men's basketball games from 2016, 2021, and 2024. Games were categorized as fast-paced or slow-paced via clustering algorithms. Stepwise Discriminant Analysis (SDA) identified key performance metrics, while an Exhaustive CHAID decision tree (E-CHAID) simulated outcomes based on game statistics. In fast-paced games, defensive rebounds (SC = 0.403), three-point field goals made (SC = 0.329), and free throws made (SC = 0.305) were crucial for distinguishing winners. In contrast, slow-paced games highlighted the importance of defensive rebounds (SC = 0.513), pick-and-roll ball-handler field goals missed (SC = -0.388), and cut field goals made (SC = 0.325). The decision tree further emphasized the significance of off-screen field goals made and steals as pivotal metrics. These findings offer insights into how game pace shapes performance indicators, providing strategic guidance for optimizing team tactics. By linking game statistics with match outcomes, this study contributes to understanding developmental trends in competitive basketball and enhancing technical and tactical performance.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-12"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142915217","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

Clinically feasible dual-task detects residual post-concussion deficits after return-to-play.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2024-12-27 DOI: 10.1080/02640414.2024.2447666

Kumiko Hashida, Kyoko Shirahata, Troy Furutani, Kaori Tamura

{"title":"Clinically feasible dual-task detects residual post-concussion deficits after return-to-play.","authors":"Kumiko Hashida, Kyoko Shirahata, Troy Furutani, Kaori Tamura","doi":"10.1080/02640414.2024.2447666","DOIUrl":"https://doi.org/10.1080/02640414.2024.2447666","url":null,"abstract":"Dual-task (DT) has been shown to detect post-concussion deficits even after traditional measures returned to normal. However, previous studies were conducted in laboratory settings that were not feasible in the clinical setting. Prospective Cohort Study. Two groups (concussion and control groups) completed two testing sessions. The concussion group was tested at 7-10 days post-concussion (subacute) and after Return-to-Play (RTP). The control group was tested with similar time windows. Participants completed 2 single task (ST): Expanded Timed Get Up and Go (ETGUG) as a physical task and Auditory Pure Switch Task (APST) as a cognitive task. After completing STs, participants completed DT performing ETGUG and APST simultaneously. A mixed method ANOVA was conducted to analyze the effects of concussion on ST and DT performance. Another mixed method ANOVA was conducted to examine the effect of concussion recovery time. The concussion group took significantly longer to complete ST and DT than controls at the subacute phase (p = 0.018, p = 0.014, respectively). At RTP timepoint, the concussion group took significantly longer to complete ST and DT than the controls (p=0.007, p < 0.001, respectively). The deficits were more clearly shown for DT. Clinically feasible DT detected subtle and residual post-concussion deficits after athletes were cleared to RTP.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-8"},"PeriodicalIF":2.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895582","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

Support leg joint kinetic determinants of maximal speed sprint performance.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2024-12-24 DOI: 10.1080/02640414.2024.2445430

Ryu Nagahara, Munenori Murata

{"title":"Support leg joint kinetic determinants of maximal speed sprint performance.","authors":"Ryu Nagahara, Munenori Murata","doi":"10.1080/02640414.2024.2445430","DOIUrl":"https://doi.org/10.1080/02640414.2024.2445430","url":null,"abstract":"This study aimed to comprehensively demonstrate support leg joint kinetic determinants of maximal speed sprint performance. Ground reaction forces and marker coordinates attached to the body were measured in the maximal speed phase from 44 male sprinters. Then, three-dimensional leg joint torque, angular velocity and power were calculated. Greater maximal running speed (9.47 ± 0.32 m/s) was correlated with greater mean hip extension (r = 0.354, p = 0.018) and flexion (r = -0.322, p = 0.033) and ankle plantar flexion torques (r = 0.464, p = 0.002), as well as greater ankle plantar flexion torque from 30% to 70% of the support phase (p < 0.001). Greater maximal running speed was associated with greater mean hip extension (r = 0.386, p = 0.010) and smaller knee extension velocities (r = -0.426, p = 0.004). Regarding joint torque power, greater maximal running speed was associated with greater mean positive (r = 0.416, p = 0.005) and negative (r = -0.390, p = 0.009) hip flexion - extension powers and positive (r = 0.642, p < 0.001) and negative (r = -0.512, p < 0.001) ankle plantar - dorsi flexion powers. Moreover, greater maximal speed was correlated with greater positive and negative ankle plantar - dorsi flexion powers from 21% to 39% (p < 0.001) and from 56% to 80% (p < 0.001), respectively, during the support phase. Understanding the joint kinetics related to maximal running speed will improve technical considerations and strength training direction for sprinters.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-11"},"PeriodicalIF":2.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142882391","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

"Outlier detection: Underused in sport science despite outliers' impact on inference and prediction".

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2024-12-24 DOI: 10.1080/02640414.2024.2443313

Marco Zanin, Réka Lóczi, Alisa Zanin

{"title":"\"Outlier detection: Underused in sport science despite outliers' impact on inference and prediction\".","authors":"Marco Zanin, Réka Lóczi, Alisa Zanin","doi":"10.1080/02640414.2024.2443313","DOIUrl":"https://doi.org/10.1080/02640414.2024.2443313","url":null,"abstract":"Outlier detection is critical in statistical analysis and predictive modelling, but it is often overlooked in research, leading to potentially inaccurate conclusions. This study aimed to (1) assess the prevalence of outlier detection strategies in sport science publications, (2) examine the effect of outliers on statistical inference using general linear mixed-effects models with longitudinal data, and (3) evaluate the impact of outliers on regression predictive models using the same dataset. A systematic literature search of 4,622 articles published in 2023 in Q1 journals in \"sport science\" category found that only 9.05% (99% CI: 4.87%-14.99%) reported employing outlier detection practices. A comprehensive outlier detection framework was designed to enhance data quality before formal statistical analysis using general(ised) linear mixed-effects models. The framework was applied to publicly available longitudinal data from rugby union small-sided games. Inclusion of outliers resulted in inaccurate maximum likelihood estimates, inflated standard errors, and biased conclusions regarding model parameters. Removing error outliers significantly improved the accuracy of predictive models, as evidenced by reduced root mean square errors. These findings underscore the importance of outlier detection in sport science research and demonstrate that appropriate handling of outliers enhances the validity of statistical inferences and predictions.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-11"},"PeriodicalIF":2.3,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885850","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

Finding the needle in the haystack of isokinetic knee data: Random Forest modelling improves information about ACLR-related deficiencies.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2024-12-22 DOI: 10.1080/02640414.2024.2435729

Kevin Nolte, Alexander Gerharz, Thomas Jaitner, Axel J Knicker, Tobias Alt

{"title":"Finding the needle in the haystack of isokinetic knee data: Random Forest modelling improves information about ACLR-related deficiencies.","authors":"Kevin Nolte, Alexander Gerharz, Thomas Jaitner, Axel J Knicker, Tobias Alt","doi":"10.1080/02640414.2024.2435729","DOIUrl":"https://doi.org/10.1080/02640414.2024.2435729","url":null,"abstract":"The difficulties of rehabilitation after anterior cruciate ligament (ACL) injuries, subsequent return-to-sport (RTS) let alone achieving pre-injury performance, are well known. Isokinetic testing is often used to assess strength capacities during that process. The aim of the present machine learning (ML) approach was to examine which isokinetic data differentiates athletes post ACL reconstruction (ACLR) and healthy controls. Two Random Forest models were trained from data of unilateral concentric and eccentric knee flexor and extensor tests (30°/s, 150°/s) of 366 male (63 post ACLR) as well as 183 female (72 post ACLR) athletes. Via a cross-validation predictive performance was evaluated and the Random Forest showed outstanding results for male (AUC = 0.90, sensitivity = 0.76, specificity = 0.88) and female (AUC = 0.92, sensitivity = 0.85, specificity = 0.89) athletes. The Accumulated Local Effects plot was used to determine the impact of single features on the predictive likelihood. For both male and female athletes, the ten most impactful features either referred to the disadvantageous (injured, non-dominant in control group) leg or to lateral differences. The eccentric hamstring work at 150°/s was identified as the most impactful single parameter. We see potential for improving the RTS process by incorporating and combining measures, which focus on hamstring strength, leg symmetry and contractional work.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-9"},"PeriodicalIF":2.3,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142877086","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 effects of hip flexion angle on quadriceps femoris muscle hypertrophy in the leg extension exercise.

IF 2.3 2区医学

Journal of Sports Sciences Pub Date : 2024-12-19 DOI: 10.1080/02640414.2024.2444713

Stian Larsen, Benjamin Sandvik Kristiansen, Paul Alan Swinton, Milo Wolf, Andrea Bao Fredriksen, Hallvard Nygaard Falch, Roland van den Tillaar, Nordis Østerås Sandberg

{"title":"The effects of hip flexion angle on quadriceps femoris muscle hypertrophy in the leg extension exercise.","authors":"Stian Larsen, Benjamin Sandvik Kristiansen, Paul Alan Swinton, Milo Wolf, Andrea Bao Fredriksen, Hallvard Nygaard Falch, Roland van den Tillaar, Nordis Østerås Sandberg","doi":"10.1080/02640414.2024.2444713","DOIUrl":"https://doi.org/10.1080/02640414.2024.2444713","url":null,"abstract":"This study compared the effects of 90° versus 40° hip flexion in the leg extension exercise on quadriceps femoris muscle hypertrophy. Twenty-two untrained men completed a ten-week intervention comprising two resistance training sessions per week. A within-participant design was used, with the lower limb side randomly allocated to the 40 or 90° condition. Muscle thickness of distal and proximal rectus femoris and vastus lateralis was quantified via ultrasound. Data were analysed within a Bayesian framework including univariate and multivariate mixed effect models with random effects to account for the within participant design. Differences between conditions were estimated as average treatment effects (ATE) and inferences were made based on posterior distributions and Bayes Factors (BF). Results indicated a greater hypertrophic response in the rectus femoris for the 40° condition, with \"extreme\" evidence supporting a hypertrophic response favouring the 40° hip angle for the rectus femoris (BF > 100; p(Distal/ATE & Proximal/ATE >0) > 0.999), and \"strong\" evidence supporting no difference in hypertrophic response for the vastus lateralis (BF = 0.07). Therefore, both conditions could be viable options for increasing quadriceps femoris hypertrophy. However, when training for maximizing rectus femoris hypertrophy among untrained men, we suggest training with a reduced hip flexion in the leg extension exercise.","PeriodicalId":17066,"journal":{"name":"Journal of Sports Sciences","volume":" ","pages":"1-12"},"PeriodicalIF":2.3,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864660","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