ReS39 / Novo Nordisk, ReMYND - LARVOL DELTA

Scraping the Surface: A Guide to Data Collection Using Web Scraping in Sports Medicine. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(12): e1473-e1479, 2025-Publicly obtained injury data, which can be combined with performance data for the team and individual, have become an attractive option in sports medicine research...The adoption of Open Science practices through transparency of methods and sharing of code or data sets is one such manner to ensure reproducible and meaningful results across sports medicine research and applied settings. The purpose of this article was to (a) operationalize and describe data-scraping methods, (b) describe the strengths and weaknesses of data-scraping methods in an applied sports medicine setting, and (c) provide a practical example with adjoining data and code on how to use replicable and reliable data-scraping methods in applied sport settings."

Journal

Contributions of Muscle Architecture and Tissue Properties to Knee Extensor Force Production. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(12): e1371-e1379, 2025-Muscular characteristics, such as muscle size, fascicle length and angle, connective tissue within the muscle, and stiffness, are related to muscle force...The RTD as a dependent variable was explained by CSA at all angles (β = 0.491-0.702), and by fascicle length at 100° of knee flexion (β = 0.206), but not by other variables (adjusted R2 = 0.371-0.665). These results suggested that maximal isometric contraction strength was determined mainly by muscle CSA, not by other variables."

Journal

The Acute and Chronic Effects of Superset Resistance Training Versus Traditional Resistance Training-A Narrative Review. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(11): 1216-1234, 2025-Resistance training (RT) leads to several health and performance benefits for a variety of people, including ball-sport athletes, occupational athletes, general population lifters, and elderly adults...Exceptions exist, but chronic data generally indicate that supersets and TRAD lead to similar adaptations for endurance, hypertrophy, power, and strength. Considering the superior training density of AAPS, RSS, and TBSS, we tentatively conclude that superset programs deliver similar adaptations as TRAD in a more time-efficient manner."

Journal • Review

Relationship Between Handgrip Strength and Vertical Jump Performance in Olympic Female Volleyball Athletes. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(7): 809-814, 2025-The purpose of this study was to examine the relationship between maximal upper-body strength assessed using a handgrip dynamometer and lower-body strength and power-producing capabilities assessed through countermovement vertical jump (CMJ)...Specifically, the dominant handgrip strength revealed a statistically significant relationship with 8 of 9 force-time metrics of interest (e.g., eccentric peak force, concentric mean power, and jump height), while the nondominant hand demonstrated a positive association with only 5 of 9 CMJ performance metrics. These results suggest that within this specific cohort of athletes, the strength of the dominant hand might be a better predictor of the overall CMJ performance, including both eccentric and concentric force and power-producing capabilities, as some of the foundational physical attributes that volleyball athletes need to possess."

Journal

The Influence of Athletic Profile on Acute Neuromuscular Response to a Repeated Sprint Protocol in Youth Females: A Pilot Study. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(7): 760-769, 2025-Athletic profiles influence how athletes tolerate exposure to high-intensity activities and training-induced fatigue...This suggests that female athletes with hybrid and fast athletic profiles may experience greater negative neuromuscular response after repeated sprints. Practitioners should therefore consider individualizing training and monitoring neuromuscular response to training to prevent athletic profile-related performance reductions, overreaching, or injury accumulating over time."

Journal • Fatigue

Dose-Response Relationship for Strength Gains From Nordic Hamstring Exercise: A Systematic Review, Meta-Analysis, and Meta-Regression. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(10): 1088-1104, 2025-This systematic review aimed to (a) evaluate the effects of Nordic hamstring exercise (NHE) training on eccentric, concentric, and isometric strength; (b) examine the potential dose-response relationship between NHE training volume and strength gains; and (c) provide updated recommendations on NHE training volume...This target volume should be preceded by a progressive introduction and is typically distributed across 2-3 weekly sessions. Increased training volumes may enhance strength gains in individuals proficient in NHE, though further investigation is needed."

Clinical • Journal • Retrospective data • Review

Representation of Women Authors in 4 Decades of Rugby Research. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(10): e1188-e1194, 2025-Gender bias in scientific publication, particularly authorship, is common; however, its extent in rugby research remains unclear...These disparities may limit diverse perspectives in the field and hinder the visibility and career advancement of women researchers. Potential underlying factors driving these disparities should be investigated to inform policies that promote equitable access to funding, research opportunities, and leadership roles in rugby science."

Journal

The Effect of Resisted Sprint Training on Force-Velocity Profile Change: A Systematic Review and Meta-Analysis. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(10): e1265-e1277, 2025-This meta-analysis evaluated the effectiveness of resisted sprint training (RST) compared with unresisted sprint training (URST) programs to positively influence horizontal force-velocity (F-V) profile variables and acceleration performance in trained individuals...Resisted sprint training represents an efficient means to increase key horizontal F-V profile variables. The findings suggest that RST may complement or be favored over URST to improve early-to-mid acceleration performance, horizontal force, or power, but further research is required in elite sprint athletes and to determine the effect that RST load and volume have on the adaptability of the F-V profile."

Journal • Retrospective data

Relative Energy Deficiency in Sport in Rock Climbers: A Narrative Review. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(8): 908-917, 2025-Rock climbing has experienced immense growth in popularity over the years and was incorporated into the summer Olympic program as of the 2020 Tokyo Olympics...Because many rock climbers take the profile of having a low BMI and body fat percentage, there is a concerning number of high-level climbers who do not meet the required nutritional status or energy requirements to sustain a moderate level of training. This article highlights the importance of implementing a multidisciplinary team-based approach in developing an individualized dietary plan for climbers with problematic LEA, underscoring the need for recognizing, diagnosing, and implementing holistic care strategies while also highlighting areas that require further advancement in the field."

Journal • Review

The Road to Designing Integrated Neuromuscular Training Programs for Children and Adolescents: A Systematic Review and Meta-Analysis. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(8): e1043-e1060, 2025-Integrative neuromuscular training (INT) combines motor competence and strength development to boost athletic performance, but its specific components and effects on children and adolescents are not well understood...This review provides evidence that INT programs have a positive effect on improving children and adolescents' physical fitness and is regarded as a promising protocol. This review and future research can inform a call to action for using INT as a novel approach for developing motor competence, strength, and conditioning simultaneously during childhood and adolescence."

Journal • Retrospective data

Validity and Reliability of Flywheel Resistance Technology as an Assessment Method and Its Association With Sports Performance and Asymmetry: A Systematic Review. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(7): e930-e948, 2025-Flywheel technology is commonly used in training but remains underused for monitoring and testing...In conclusion, flywheel technology offers valuable insights across various movements, providing strength and power assessment while potentially improving athletic performance and injury prevention. Continued research is vital to explore its effectiveness in diverse athletic contexts."

Journal • Review

Development of Stretch-Shortening Cycle Function in Girls During Maturation and in Response to Training: A Narrative Review. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(8): e1061-e1069, 2025-The aim of this narrative review was to examine stretch-shortening cycle (SSC) function and to explore its effects on the athletic performance in girls during maturation and in response to plyometric training (PT), where there has been limited focus to date...After PT, boys experience "synergistic adaptation," which is the symbiotic relationship between PT strategically programmed to coincide with the development of the SSC that is being concurrently enhanced by the processes of growth and maturation. Establishing if girls experience periods of accelerated and synergistic adaptation in slow and fast SSC function after PT would likely influence future training in this population, which has traditionally been underserved."

Journal

Leg Tuck or Plank? Critical Decisions to Optimize Physical Fitness Assessment in Army Personnel. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(6): e830-e833, 2025-Recent updates to the Army Combat Fitness Test (ACFT), primarily surrounding the decision to replace the leg tuck (LTK) with the plank (PLK), have raised significant controversy...The results suggest that the LTK is a complex exercise that reflects multiple fitness components that are no longer assessed by the PLK. The Army has reinstituted sex-stratified scoring, as such, ACFT event selection should align with the most operationally relevant components of fitness."

Journal

Optimizing Athlete Safety: Advanced Strategies for Preventing Exertional Heat Stroke in Collegiate Football Through Strength and Conditioning Interventions. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(6): 711-719, 2025-Ensuring the safety of National Collegiate Athletic Association football players is paramount, particularly because these athletes contend with the rigorous physical demands and high-impact collisions inherent to the sport...By exploring evidence-based strategies, including enhanced training protocols, heat acclimatization practices, comprehensive health screenings, wearable technology, and tailored emergency response plans, this article offers a rigorous, science-driven approach to creating safer athletic environments. Ultimately, the article aimed to advance the well-being of collegiate football linemen by equipping S&C coaches with the tools and knowledge necessary to effectively manage the unique challenges posed by the physical demands of their athletes."

Journal • Review • Cardiovascular

Acute Glucose Tolerance in Response to Lower- and Higher-Load Resistance Exercise in Postmenopausal Women: Contribution of Aerobic Capacity and Body Composition. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(6): e749-e757, 2025-Glucose tolerance (GT), fat-free mass (FFM), and V̇o2peak are known to decline after menopause...Significant correlations were also found between V̇o2peak and glucose AUC for all conditions (all r ≤ -0.6 to 0.8; p < 0.05). We conclude that HWLR and LWHR both acutely improve GT in PMW, whereas V̇o2peak may be a stronger contributor than FFM."

Clinical • Journal

An Examination of the Relationship Between Single Leg Jump and Balance Performance in Female Collegiate Basketball Players. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(6): 705-710, 2025-The purpose of this study was to examine relationships between different types of single leg jumps and components of the Y-Balance Test (YBT) in a convenience sample of female collegiate basketball players...When considering that none of the players suffered a significant time-loss injury during the course of the season, the above results may suggest a benefit in seeking for symmetry in single leg vertical and broad jump and YBT performance as part of the strength and conditioning process. The mean values for the single leg vertical jump (left, 30.29 cm; right, 31.16 cm) and single leg broad jump (left, 168.60 cm; right, 163.85 cm) and the YBT percent reach values for the anterior (left, 67.17%; right 68.86%), posteromedial (left, 130.46%; right 128.23%), and posterolateral (left, 124.49%; right 127.35%) directions from the present study can be used by strength and conditioning coaches for comparative purposes in healthy samples..."

Journal

Strength Training Practices in Amateur and Professional Boxing. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(6): 672-679, 2025-Previous research has highlighted that force development are key contributors to punch impact force in boxing; however, the strength training practices within the sport remain unclear...The main findings of this study demonstrate that the majority of practitioners (a) implemented strength training to improve "punching power" and muscular endurance and reduce the likelihood of injury (72-88%); (b) used punch-specific and reactive-strength training the most in programming (93%); (c) acknowledged that maximal-strength training improves "punching power" (84%), yet programmed it the least in training; and (d) highlighted that there was a fear in boxing that maximum-strength training may lead to unwanted increases in muscle mass and cited a lack of resources as a reason for maximal-strength training not being used. As there is a large contingent of volunteer practitioners in boxing without professional S&C or..."

Journal

The Effects of High-Intensity Interval Training on Both Physical and Cognitive Performance and Recovery. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): 547-552, 2025-This study examined the effect of high-intensity interval training (HIIT) on cognitive and physical performance and recovery...In addition, a significant improvement in reactive agility was observed between PRE and 48H and between IP and 48H (p = 0.049 and p = 0.035, respectively). The results of this study indicate differences in recovery patterns between cognitive and dynamic physical function in elite handball players following HIIT."

Journal

Postpractice Neuromuscular Performance Changes in 3 × 3 Professional Female Basketball Players. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): e706-e710, 2025-The purpose of this investigation was to examine changes in lower body neuromuscular performance characteristics across multiple testing time points within a cohort of professional 3 × 3 female basketball players...The reactive strength index modified was shown to be the most sensitive metric in detecting fatigue-induced changes in athletes' performance, because it experienced the largest drop between these 2 testing time points (p = 0.011; g = 0.727). Also, the observed performance suppression disappeared by the afternoon training session because all of the aforementioned force-time metrics returned to the baseline levels, indicating that the athletes were adequately recovered to participate in team training activities."

Journal • Fatigue

The Effects of Repeated-Sprint Training vs. Short-Bout High-Intensity Interval Training on Hamstring Architecture and Physical Fitness. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): e620-e627, 2025-The aim of the study was to quantify and compare the effects of repeated-sprint training (RST) vs. short-bout high-intensity interval training (HIIT) on hamstring architecture and physical fitness in rugby league players...Both groups increased fascicle length, but RST was more effective at improving sprint speed, while short-bout HIIT was more effective for improving aerobic fitness. Collectively, our findings demonstrate the potential benefits of these conditioning methods, which may cause morphological, physiological, and neuromuscular adaptations in athletes when applied alongside usual training practice."

Clinical • Journal

Shoulder Internal and External Rotation Strength Assessment in Baseball Pitchers: Normative Data and Reliability. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): e634-e638, 2025-Rotator cuff strength assessments are valuable for monitoring throwing athlete injury and performance status...Intraclass correlation coefficient estimates ranged from 0.79 to 0.89 for peak values, and 0.80-0.91 for rate measures, with IR typically marginally better than ER. Although practitioners need to be mindful of managing error (e.g., through familiarity), peak measures of rotator cuff strength assessed using portable strain gauge are promising for simple field-based monitoring of shoulder health for throwing athletes."

Journal

Quantifying Added Drag in Swimming With Parachutes: Implications for Resisted Swimming Training. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): e701-e705, 2025-Swimming parachutes are often used during training as resistive equipment, but their added load and the hydrodynamic effects of the swimmer in front have yet to be investigated...Possible explanations for these differences include drafting and added mass effects. Data reported in this study can assist coaches in quantifying the added load of swimming parachutes during training, by knowing only the parachute size and the swimming velocity."

Journal

Pectoralis Clavicular and Sternocostal Thicknesses Increase Similarly in Response to One and Three Sets of Pec Deck Resistance Training in Untrained Young Men. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): 523-530, 2025-Perceived lack of time is a commonly cited reason for not engaging in resistance training (RT)...Our results indicate no effect of RT volume (1S vs. 3S) on changes in muscle size and strength and do not support regional hypertrophy after pec deck exercise in untrained men. These results have important implications for RT prescription and rehabilitation practices for individuals who may have limited time or those undergoing brief rehabilitation sessions targeting the pectoralis musculature."

Journal

Effects of Rapid Weight Loss in Male and Female Wrestlers. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): e721-e729, 2025-The long-standing practice of rapid weight loss (RWL) of wrestlers and other combat athletes is known as "cutting weight." This practice often consists of rapid dehydration and malnutrition to "weigh-in" at a lower weight class for competition...In addition, literature suggests a decrease in athletic performance for athletes undergoing >5% RWL. The purpose of this narrative review was to provide an overview of the implications of weight cutting on athletic performance and overall well-being, and to highlight specific medical, physiological, and psychological effects in male and female wrestlers to aid healthcare workers in making recommendations regarding weight cutting practices."

Journal • Review

Development of Dynamic Strength Index Based on Free-Weight Exercises for Collegiate Male Sprinters. (PubMed, J Strength Cond Res) - "J Strength Cond Res 39(5): e639-e646, 2025-The dynamic strength index (DSI) serves as a predictive measure of dynamic performance qualities, calculated as the ratio of peak force during the countermovement jump (CMJ-PF) to that during the isometric midthigh pull (IMTP-PF)...Corresponding to a "very high" DSI (>0.80) and a "low" DSI (<0.60), the alternative DSI values calculated as the SJ-1RM to DL-1RM ratio were 0.30 and 0.43, respectively. Using the alternative DSI, derived from the SJ-1RM to DL-1RM ratio, coaches and practitioners can assess the dynamic performance qualities of collegiate male sprinters using free weights instead of a force plate."

Journal