Journal of Strength and Conditioning Research最新文献

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The Effects of Percentage-Based, Rating of Perceived Exertion, Repetitions in Reserve, and Velocity-Based Training on Performance and Fatigue Responses. 基于百分比的、感知运动等级的、储备重复的和基于速度的训练对运动表现和疲劳反应的影响。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 Epub Date: 2025-01-07 DOI: 10.1519/JSC.0000000000005026
Nicholas Cowley, Vaughan Nicholson, Ryan Timmins, Gabriella Munteanu, Tandia Wood, Amador García-Ramos, Cameron Owen, Jonathon Weakley
{"title":"The Effects of Percentage-Based, Rating of Perceived Exertion, Repetitions in Reserve, and Velocity-Based Training on Performance and Fatigue Responses.","authors":"Nicholas Cowley, Vaughan Nicholson, Ryan Timmins, Gabriella Munteanu, Tandia Wood, Amador García-Ramos, Cameron Owen, Jonathon Weakley","doi":"10.1519/JSC.0000000000005026","DOIUrl":"10.1519/JSC.0000000000005026","url":null,"abstract":"<p><strong>Abstract: </strong>Cowley, N, Nicholson, V, Timmins, R, Munteanu, G, Wood, T, García-Ramos, A, Owen, C, and Weakley, J. The effects of percentage-based, rating of perceived exertion, repetitions in reserve, and velocity-based training on performance and fatigue responses. J Strength Cond Res 39(4): e516-e529, 2025-This study assessed the effects of percentage-based training (%1RM), rating of perceived exertion (RPE), repetitions in reserve (RIR), and velocity-based training (VBT) on (a) acute kinematic outputs, perceptions of effort, and changes in neuromuscular function during resistance training; and (b) neuromuscular fatigue and perceptions of soreness 24 hours after exercise. In a randomized crossover design, 15 subjects completed a %1RM, RPE, RIR, and VBT training condition involving a fatiguing protocol followed by 5 sets of the free-weight back squat and bench press at 70% of 1 repetition maximum. Subjects returned at 24 hours to assess neuromuscular fatigue and perceived soreness. Percentage-based training and RPE allowed the smallest volume loads, with %1RM prescription causing sets to be regularly taken to failure. Alternatively, RIR and VBT allowed greater maintenance of training volume. Velocity-based training had the most accurate training prescription, with all sets being within 5% of the intended starting velocity, while the RPE and %1RM prescriptive methods caused subjects to train with loads that were increasingly inaccurate. The RPE prescriptive method had the lowest reported values for differential RPE while the %1RM had the greatest change across the session. At no point were there between-group differences in measures of neuromuscular fatigue or perceived soreness. These findings demonstrate that autoregulatory prescriptive methods can be used to mitigate the risk of training to failure, ensure accurate training prescription that can maintain training volume, and enhance within-training kinematic outputs without altering neuromuscular fatigue or perceptions of soreness.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"e516-e529"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142950504","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
Countermovement Jumps and Acute to Chronic Workload Ratios in Low, Moderate, and High Jump Load Groups Throughout a Division I Volleyball Season. 在整个一级排球赛季中,低、中、高跳负荷组的反动作跳跃和急慢性负荷比。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 Epub Date: 2024-12-19 DOI: 10.1519/JSC.0000000000005030
Gabriel J Sanders, Stacie Skodinski, Damjana V Cabarkapa, Mason Howard, Dimitrije Cabarkapa, Roger O Kollock, Corey A Peacock
{"title":"Countermovement Jumps and Acute to Chronic Workload Ratios in Low, Moderate, and High Jump Load Groups Throughout a Division I Volleyball Season.","authors":"Gabriel J Sanders, Stacie Skodinski, Damjana V Cabarkapa, Mason Howard, Dimitrije Cabarkapa, Roger O Kollock, Corey A Peacock","doi":"10.1519/JSC.0000000000005030","DOIUrl":"10.1519/JSC.0000000000005030","url":null,"abstract":"<p><strong>Abstract: </strong>Sanders, GJ, Skodinski, S, Cabarkapa, DV, Howard, M, Cabarkapa, D, Kollock, RO, and Peacock, CA. Countermovement jumps and acute to chronic workload ratios in low, moderate, and high jump load groups throughout a Division I volleyball season. J Strength Cond Res 39(4): 457-465, 2025-The purpose of the study was to evaluate the effects of low, moderate, and high jump loads on the acute to chronic workload ratio (ACWR) and neuromuscular fatigue throughout a Division I volleyball season. Twelve female volleyball athletes were monitored throughout a competitive season to track daily jump loads and measure neuromuscular fatigue based on twice-weekly countermovement jumps (CMJs) using a dual force plate. Jump loads were categorized into thirds (low, moderate, high-volume) to assess changes in neuromuscular fatigue, and a secondary evaluation examined differences in the ACWR. The results of this study were statistically significant with a p ≤ 0.05. The Wilks Lambda test in the multivariate analysis of variance found there were main effects for low, moderate, and high jump load groups ( F = 50.498, p < 0.001), weeks ( F = 3.136, p < 0.001), and significant group by week interactions ( F = 1.751, p < 0.001) for jump loads and CMJ test results. There was no main effect of week for ACWR ( F = 0.634, p = 0.849), and although statistically different, there were minimal changes in the ACWR between groups. There were significant variations in jump loads and CMJ performance between low, moderate, and high jump load groups across a 16-week season, most notably after week 5. In addition, the data highlight the limitations of the ACWR when detecting changes in athlete fatigue throughout the season.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"457-465"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869472","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
Changes in Absolute and Relative Muscular Endurance After Resistance Training: A Review of the Literature With Considerations for Future Research. 阻力训练后绝对和相对肌肉耐力的变化:文献综述及对未来研究的思考。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 DOI: 10.1519/JSC.0000000000005084
William B Hammert, Yujiro Yamada, Ryo Kataoka, Jun Seob Song, Robert W Spitz, Vickie Wong, Aldo Seffrin, Jeremy P Loenneke
{"title":"Changes in Absolute and Relative Muscular Endurance After Resistance Training: A Review of the Literature With Considerations for Future Research.","authors":"William B Hammert, Yujiro Yamada, Ryo Kataoka, Jun Seob Song, Robert W Spitz, Vickie Wong, Aldo Seffrin, Jeremy P Loenneke","doi":"10.1519/JSC.0000000000005084","DOIUrl":"10.1519/JSC.0000000000005084","url":null,"abstract":"<p><strong>Abstract: </strong>Hammert, WB, Yamada, Y, Kataoka, R, Song, JS, Spitz, RW, Wong, V, Seffrin, A, and Loenneke, JP. Changes in absolute and relative muscular endurance after resistance training: A review of the literature with considerations for future research. J Strength Cond Res 39(4): 474-491, 2025-Changes in local muscular endurance can be examined using absolute muscular endurance tests (e.g., performing as many repetitions as possible at pre- and postintervention against the same external load) and/or relative muscular endurance tests (e.g., using a load that scales to the individual's current level of maximal strength). This article discusses and elaborates on recommendations for assessing changes in local muscular endurance, with a focus on absolute and relative muscular endurance testing methods. We conducted a systematic search of the literature, which yielded 7,473 total articles. Of those, 51 studies met the inclusion criteria: 40 indicated use of either an absolute (n = 17) or relative muscular endurance (n = 20) test, 3 of which used both, and 11 did not clearly indicate whether an absolute or relative test was used. The literature examined suggests that absolute muscular endurance is much more likely to increase after resistance training compared with relative muscular endurance. Among the training protocols that had the most robust effects on relative muscular endurance were those that used lower loads and/or a higher number of repetitions per set, which might be a consequence of the protocols producing lower magnitudes of strength increases. Another notable observation was the lack of clarification as to how changes in local muscular endurance were studied. We urge future work to ensure that experimental designs are conducted and described with sufficient clarity (i.e., report whether an absolute or relative muscular endurance test was used, and control for/report the repetition cadence used during testing).</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":"39 4","pages":"474-491"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736029","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
An Efficient and Accurate Approach for Estimating the Free-Weight Back Squat 1-Repetition Maximum Based on the 2-Point Method and Optimal Minimal Velocity Threshold. 基于两点法和最优最小速度阈值的自由重量后蹲1次重复最大值估算方法
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 Epub Date: 2024-12-19 DOI: 10.1519/JSC.0000000000005040
Zongwei Chen, Fengping Xiao, Yaxu Mao, Xiuli Zhang, Amador García-Ramos
{"title":"An Efficient and Accurate Approach for Estimating the Free-Weight Back Squat 1-Repetition Maximum Based on the 2-Point Method and Optimal Minimal Velocity Threshold.","authors":"Zongwei Chen, Fengping Xiao, Yaxu Mao, Xiuli Zhang, Amador García-Ramos","doi":"10.1519/JSC.0000000000005040","DOIUrl":"10.1519/JSC.0000000000005040","url":null,"abstract":"<p><strong>Abstract: </strong>Chen, Z, Xiao, F, Mao, Y, Zhang, X, and García-Ramos, A. An efficient and accurate approach for estimating the free-weight back squat 1-repetition maximum based on the 2-point method and optimal minimal velocity threshold. J Strength Cond Res 39(4): e530-e537, 2025-This study aimed to compare the accuracy of nine 1-repetition maximum (1RM) estimation methods based on velocity recordings during the free-weight back squat. In a counterbalanced order, 39 resistance-trained male subjects performed 2 sessions against 6 loads (∼40, 50, 60, 70, 80, and 90% of 1RM) and 2 sessions against only 2 loads (∼40 and 90% of 1RM) followed by the actual 1RM attempts. The first session of each procedure was used for obtaining minimal velocity thresholds (MVTs) and the second session was used for 1RM estimation. Predicted 1RMs were calculated by entering 3 MVTs (i.e., actual MVT [i.e., the MVT associated with the actual 1RM], general MVT [i.e., 0.30 m·second -1 ], and optimal MVT [i.e., the MVT that minimizes the differences between the actual and predicted 1RMs]) into 3 load-velocity relationship (LVR) regression equations (multiple-point [i.e., using data of 6 loads from the multiple-point test], extracted 2-point [i.e., using data of the lightest and heaviest loads from the multiple-point test], and 2-point [i.e., using data of 2 loads from the 2-point test]). Alpha was set at 0.05. The main findings revealed that only the 1RMs predicted by the optimal MVT showed acceptable accuracy (raw errors ≤0.8 kg, absolute errors ≤4.0%) compared with the actual 1RM. The analysis of variance failed to reveal a significant main effect of the \"type of LVR model\" ( p = 0.079). Therefore, we recommend using the 2-point method combined with the optimal MVT to obtain an efficient and accurate 1RM estimation during the free-weight back squat.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"e530-e537"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869433","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
Wellness and Session Rating of Perceived Exertion in Professional Basketball Players Within Different Weekly Contexts. 职业篮球运动员在不同周度环境下的健康与体能评估。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 Epub Date: 2024-12-19 DOI: 10.1519/JSC.0000000000005023
Roberto Molina, Daniel Lapresa, Javier Arana, Ildefonso Álvarez, Hugo Salazar
{"title":"Wellness and Session Rating of Perceived Exertion in Professional Basketball Players Within Different Weekly Contexts.","authors":"Roberto Molina, Daniel Lapresa, Javier Arana, Ildefonso Álvarez, Hugo Salazar","doi":"10.1519/JSC.0000000000005023","DOIUrl":"10.1519/JSC.0000000000005023","url":null,"abstract":"<p><strong>Abstract: </strong>Molina, R, Lapresa, D, Arana, J, Álvarez, I, and Salazar, H. Wellness and session rating of perceived exertion in professional basketball players within different weekly contexts. J Strength Cond Res 39(4): e546-e551, 2025-The objective of this article was to analyze the level of well-being-through the wellness questionnaire-and the training load-based on the session rating of perceived exertion (sRPE)-in professional basketball players within different weekly contexts during the season 2020/2021. The team analyzed played 2 competitions: Endesa League (Asociación de Clubes de Baloncesto)-the highest level of competition in Spain-and the Basketball Champions League at the European level. Non-parametric statistics have been used because of the size of the sample and the ordinal nature of the scores. The contrast of related groups has not been significant for the wellness variable, remaining stable scores throughout different weekly contexts (weeks without competition, regular weeks with 1 game, and congested weeks with 2 or more games). Regarding the training load results, a significant effect size has been found in the contrast of medians depending on the proximity to the game in regular weeks and congested weeks, while in weeks without competition, moments of load alternation have been detected. This work is an example of the practical application of the wellness-sRPE relationship as an effective indicator within the week periodization.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"e546-e551"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142864716","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
Estimation of Whole-Body Bone Mineral Density Through Air Displacement Plethysmography in a Large Sample of Elite Athletes. 在大量精英运动员样本中通过空气位移胸压计估算全身骨矿物质密度。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 Epub Date: 2024-11-26 DOI: 10.1519/JSC.0000000000005024
Meghan K Magee, Jennifer B Fields, Andrew Jagim, Brittanie Lockard, Angela Miller, Debra Stroiney, Margaret T Jones
{"title":"Estimation of Whole-Body Bone Mineral Density Through Air Displacement Plethysmography in a Large Sample of Elite Athletes.","authors":"Meghan K Magee, Jennifer B Fields, Andrew Jagim, Brittanie Lockard, Angela Miller, Debra Stroiney, Margaret T Jones","doi":"10.1519/JSC.0000000000005024","DOIUrl":"10.1519/JSC.0000000000005024","url":null,"abstract":"<p><strong>Abstract: </strong>Magee, MK, Fields, JB, Jagim, A, Lockard, B, Miller, A, Stroiney, D, and Jones, MT. Estimation of whole-body bone mineral density through air displacement plethysmography in a large sample of elite athletes. J Strength Cond Res 39(4): 427-432, 2025-Dual-energy x-ray absorptiometry (DXA) is used to determine bone mineral density (BMD) and body composition. Regulations and cost may limit DXA's utility in some athletic settings. Air displacement plethysmography (ADP), while able to measure body composition, does not measure BMD. The purpose was to evaluate the influence of body composition parameters obtained from ADP on BMD. Collegiate athletes (males, n = 153; females, n = 208) underwent ADP and DXA assessments. For ADP testing, the Brozek equation was used to estimate body fat percent (BF%) and fat-free mass (FFM) from body density. Dual-energy x-ray absorptiometry tests were completed to obtain BMD using the whole-body scan mode. Stepwise regression was conducted using age, body mass, height, sex, race, FFM (ADP), BF% (ADP), and sport type as independent variables. Total BMD (DXA) was the dependent variable. Accuracy and precision of the final equation were evaluated through Bland-Altman and linear regression. The final regression equation yielded an R2 of 0.691 with race, mass, BF%, age, and sport type as significant predictors ( p < 0.05) of BMD. Bland-Altman and linear regression showed systematic {95% confidence interval [CI] (-0.619 to -0.360)} and proportional bias (95% CI [0.173-0.374]). Although an ADP-derived regression equation may not provide a precise prediction of BMD, it may be useful to establish risk for low BMD if DXA is unavailable. Dual-energy x-ray absorptiometry may not be feasible for some athletic programs; therefore, an estimation equation for BMD derived from ADP values is advantageous for practitioners. This equation may assist in screening athletes for risk of low BMD.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"427-432"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142729693","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
Differences in Anthropometric Parameters, Physical Fitness, and Kicking Speed in Young Football Players According to Performance Level, Playing Position, and Relative Age Effect: A Population-Based Study. 青少年足球运动员在运动水平、位置和相对年龄影响下的人体测量参数、体能和踢球速度的差异:一项基于人群的研究。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-04-01 Epub Date: 2024-12-24 DOI: 10.1519/JSC.0000000000005041
Hjalti R Oddsson, Katrín Ý Friðgeirsdóttir, Lára Hafliðadóttir, Ingi Þ Einarsson, Hafrún Kristjánsdóttir, Jose M Saavedra
{"title":"Differences in Anthropometric Parameters, Physical Fitness, and Kicking Speed in Young Football Players According to Performance Level, Playing Position, and Relative Age Effect: A Population-Based Study.","authors":"Hjalti R Oddsson, Katrín Ý Friðgeirsdóttir, Lára Hafliðadóttir, Ingi Þ Einarsson, Hafrún Kristjánsdóttir, Jose M Saavedra","doi":"10.1519/JSC.0000000000005041","DOIUrl":"10.1519/JSC.0000000000005041","url":null,"abstract":"<p><strong>Abstract: </strong>Oddsson, HR, Friðgeirsdóttir, KÝ, Hafliðadóttir, L, Einarsson, IÞ, Kristjánsdóttir, H, and Saavedra, JM. Differences in anthropometric parameters, physical fitness, and kicking speed in young football players according to performance level, playing position, and relative age effect: a population-based study. J Strength Cond Res 39(4): e561-e568, 2025-The objectives of this study were to determine (a) the differences, both in male and female players, in anthropometric parameters, physical fitness, and kicking speed based on the players' level and position on the field; (b) whether there is a relative age effect based on the players' level, and (c) whether there is a relationship between the relative age effect and the anthropometric parameters, physical fitness, and kicking speed parameters. Eight hundred twenty-six football players (15.76 ± 2.60 year old, 75.7% male) participated in the study. Players were grouped into elite and nonelite, as well as based on their field position and birth quartile. Nonparametric tests were used to study differences by level and by position or trimesters. Chi-square goodness of fit analysis was performed to know the association between elite and nonelite players regarding the relative age effect. Physical fitness parameters and kicking speed were higher in elite players than in nonelite players (5.834 ≥ χ2 ≤ 48.079; p < 0.001). There were differences in anthropometric and physical fitness parameters and kicking speed depending on the player's position: goalkeeper vs. outfield players (7.648 ≥ χ2 ≤ 26.078; p < 0.001) except in jump tests. There was a relative age effect in elite male players ( χ2 = 26.313; p < 0.001) but not in female players, and it was related to anthropometric and physical fitness parameters. This population-based study offers insights into the variables that differentiate elite from nonelite players at young ages, with differences in the relative age effect between male and female players, which can be used by coaches to identify key performance variables.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"e561-e568"},"PeriodicalIF":2.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142877173","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
Can the Variance in DP World Tour Golfers' Drive Distance be Predicted From Kinetic Variables During a Countermovement Jump and Isometric Mid-Thigh Pull? DP世界巡回赛选手在反动作跳跃和大腿中部等距牵拉过程中的动力变量能否预测其推杆距离的方差?
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-03-04 DOI: 10.1519/JSC.0000000000005079
Tara N Bage, Chris Bishop, Daniel Coughlan, Jack E T Wells
{"title":"Can the Variance in DP World Tour Golfers' Drive Distance be Predicted From Kinetic Variables During a Countermovement Jump and Isometric Mid-Thigh Pull?","authors":"Tara N Bage, Chris Bishop, Daniel Coughlan, Jack E T Wells","doi":"10.1519/JSC.0000000000005079","DOIUrl":"https://doi.org/10.1519/JSC.0000000000005079","url":null,"abstract":"<p><strong>Abstract: </strong>Bage, TN, Bishop, C, Coughlan, D, and Wells, JET. Can the variance in DP World Tour Golfers' drive distance be predicted from kinetic variables during a countermovement jump and isometric mid-thigh pull? J Strength Cond Res XX(X): 000-000, 2024-In recent years, a growing body of research has investigated the relationships clubhead velocity has with kinetic variables during a countermovement jump (CMJ) and isometric mid-thigh pull (IMTP). However, to date, no research has investigated the relationships these kinetic variables have with real-world drive distance (DD) in elite DP World Tour golfers. The purpose of this investigation was to assess if CMJ positive impulse (PI), CMJ net impulse (NI), IMTP peak force (PF), force at 200 milliseconds, force at 250 milliseconds, and force at 300 milliseconds could predict the variance in elite DP World Tour golfers DD during a real-world tournament season. Twenty-five DP World Tour golfers performed CMJs and IMTPs on force plates in a real-world setting, with DD assessed using DP World Tour statistics. Hierarchical multiple regression analysis was used to assess if kinetic variables significantly predicted the variance in DP World Tour Golfers' DD. Statistical significance for this investigation was set at p ≤ 0.05 with effect size determined using the f2 statistic. The results of the investigation note that model 2 (CMJ PI and CMJ NI) was the best fit, significantly predicting (R2 = 0.279, p ≤ 0.05) the variance in DP World Tour Golfers' DD, which represented a large effect size (f2 = 0.39). These findings support the use of CMJ PI and CMJ NI when physically profiling elite golfers. In addition, strength and conditioning practitioners should consider utilizing modalities aimed at increasing CMJ impulse when working with golfers.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143605351","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
Criterion Validity and Reliability of a New Medicine Ball Rotational Power Test. 新型药球旋转力量测试的标准有效性和可靠性。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-03-01 Epub Date: 2024-11-26 DOI: 10.1519/JSC.0000000000005001
Sean G J Hardy, Oscar W Stelzer-Hiller, Kate M Edwards, Jonathan Freeston
{"title":"Criterion Validity and Reliability of a New Medicine Ball Rotational Power Test.","authors":"Sean G J Hardy, Oscar W Stelzer-Hiller, Kate M Edwards, Jonathan Freeston","doi":"10.1519/JSC.0000000000005001","DOIUrl":"10.1519/JSC.0000000000005001","url":null,"abstract":"<p><strong>Abstract: </strong>Hardy, SGJ, Stelzer-Hiller, OW, Edwards, KM, and Freeston, J. Criterion validity and reliability of a new medicine ball rotational power test. J Strength Cond Res 39(3): e429-e435, 2025-This study assessed the validity and reliability of 2 medicine ball rotational power assessments, the novel push for maximum velocity by radar (MB vel ), and the commonly used push for maximum distance by tape measure (MB dis ), against the criterion reference 3-dimensional motion capture (MoCap) to identify the best-practice field-based assessment. Fifteen professional female cricketers volunteered for 2 testing sessions each comprising of a specific warm-up and 24 (12 MB vel , 12 MB dis ) maximal throws of a 2-kilogram medicine ball. Radar velocity and tape measure distance were compared with MoCap velocity and projectile motion calculated distance overall, and by dominant and nondominant sides. Statistical analysis included intraclass correlations (ICCs) for accuracy (1, 1) and reliability (3,1), Bland-Altman plots for bias precision and limits of agreement, linear regression ( R2 ) for variance, and Pearson's ( r ) for correlation. Significance was set α = 0.05. MB vel demonstrated excellent accuracy (ICC = 0.97 [0.97-0.98]), and nearly perfect agreement for bias (-0.09%) and precision (1.49%). Side-to-side analysis showed the same profile for MB vel dominant (ICC = 0.96 [0.95-0.97], bias -0.15%, precision = 1.55%) and nondominant sides (ICC = 0.97 [0.96-0.98], bias -0.05%, precision = 1.53%). MB vel demonstrated excellent reliability overall (ICC = 0.94 [0.82-0.98]) for dominant (ICC = 0.88 [0.69-0.97]) and nondominant sides (ICC = 0.93 [0.80-0.98]). MB dis showed poor accuracy (ICC = 0.38 [0.28-0.47]), large bias (12.43%), lower precision (4.55%), and moderate reliability (ICC = 0.72 [0.32-0.90]). The MB vel assessment validly and reliably measures rotational power performance, enabling practitioners to profile, benchmark, and assess the quality in the field.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"e429-e435"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142729686","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
Evaluating Disability Inclusivity in Accreditation Standards for Exercise Science-Related Programs: A Scoping Review. 评估运动科学相关专业认证标准中的残疾包容性:范围审查。
IF 2.5 2区 医学
Journal of Strength and Conditioning Research Pub Date : 2025-03-01 Epub Date: 2024-11-26 DOI: 10.1519/JSC.0000000000005016
Stephanie M Kubiak, Elizabeth A Starns, Rebecca J Wehler, Lindsay A Church, John C Roberts
{"title":"Evaluating Disability Inclusivity in Accreditation Standards for Exercise Science-Related Programs: A Scoping Review.","authors":"Stephanie M Kubiak, Elizabeth A Starns, Rebecca J Wehler, Lindsay A Church, John C Roberts","doi":"10.1519/JSC.0000000000005016","DOIUrl":"10.1519/JSC.0000000000005016","url":null,"abstract":"<p><strong>Abstract: </strong>Kubiak, SM, Starns, EA, Wehler, RJ, Church, LA, and Roberts, JC. Evaluating disability inclusivity in accreditation standards for exercise science-related programs: a scoping review. J Strength Cond Res 39(3): e506-e515, 2025-The purpose of this scoping review was to determine the level of inclusivity for disability-related language within accreditation standards for exercise science-related bachelor and graduate education programs. Standards from 4 U.S. exercise science-related programmatic accrediting organizations were included in this study. Using the World Health Organization's International Classification of Functioning, Disability, and Health (ICF) framework, each standard ( N = 1,043) was classified as either containing disability-related language or not based on the 8 ICF function and structure categories. Owing to the broad ICF disability framework, standards were further analyzed using open coding. Frequencies and percentages of exercise science-related accreditation standards that included or lacked disability language and to what extent were reported. Of the 1,043 standards, 417 were classified as including language related to at least 1 of the 8 ICF categories. Using a more specific disability definition from the Centers for Disease Control and Prevention, standards were further analyzed and coded as \"knowledge of\" disability ( n = 281; 27%), \"application of\" knowledge ( n = 64; 6%), 21 standards were classified as both (2%), and 677 (65%) were classified as having no disability language. \"Knowledge of\" and \"application of\" coded standards were further organized according to subcodes (disability, risk factors, both disability and risk factors, and basic life support or emergency care). The lack of inclusive language identified revealed a critical need to reexamine the inclusivity of disability in accreditation standards to ensure educational curricula equip future fitness professionals with the education and experience needed to confidently and effectively serve persons with disabilities.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"e506-e515"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142729708","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
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