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The Impact of a Repeated Sprint Training Program on Performance Measures in Male Field Hockey Players
This study aimed to investigate the impact of a running SIT intervention applied to competitive athletes within a training program and to consider whether an uphill or flat (horizontal) SIT protocol had different effects on performance changes over time. Eighteen male hockey players (mean ± SD: age, 20.7 ± 0.9 years; hockey training experience, 9.9 ± 3.0 years) completed 2 sessions of SIT per week for 8 weeks, with intensity progressively increasing from 6 sprints in week 1 to 12 sprints in week 8. Subjects were randomly allocated to a flat or uphill (6% gradient) training condition (n = 9) and completed 30-m maximal sp...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

A Comparison of On-Ice External Load Measures Between Subelite and Elite Female Ice Hockey Players
This study quantified and examined differences in measures of on-ice external load for subelite and elite female ice hockey players. External load variables were collected from subelite (N = 21) and elite (N = 24) athletes using Catapult S5 monitors during the preseason. A total of 574 data files were analyzed from training and competition during the training camp. Significant differences between groups were found across all variables. Differences in training between the 2 groups ranged from trivial (forwards PlayerLoad, p = 0.03, effect-size [ES] = 0.18) to large (forwards Explosive Efforts [EEs], p (Source: Journal of St...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Performing Soccer-Specific Training With Blood Flow Restriction Enhances Physical Capacities in Youth Soccer Players
This study investigated the effect of soccer training with blood flow restriction (BFR) on physical performance in youth athletes. Nineteen semiprofessional soccer players were randomly assigned to either normal soccer training (ST; n = 9) or soccer training with BFR (STBFR; n = 10). Both groups performed identical activities during a 6-week preseason training phase, either with or without lower limb BFR. Training included soccer-specific drills, small-sided games, plyometrics, and continuous running. Before and after the intervention, players were assessed for leg extension strength and endurance, countermovement jump per...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Effects of a Short-Term Heat Acclimation Protocol in Elite Amateur Boxers
Stone, BL, Ashley, JD, Skinner, RM, Polanco, JP, Walters, MT, Schilling, BK, and Kellawan, JM. Effects of a short-term heat acclimation protocol in elite amateur boxers. J Strength Cond Res 36(7): 1966–1971, 2022—Boxing requires proficient technical and tactical skills coupled with high levels of physiological capacity. Although heat and humidity negatively affect acute exercise performance, short-term exercise training in hot and humid environments can lead to physiological adaptations that enhance exercise performance in both hot and thermoneutral conditions. In highly trained endurance athletes, exercise-induced acc...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Effects of Westbound Trans-meridian Travel on Countermovement Jump Performance in International-Level Rowers
This study assessed the impact of westbound trans-meridian travel on changes in CMJ performance in highly trained aerobic athletes. Highly trained male rowers (n = 21, 23.7 ± 1.4 years, 1.91 ± 0.07 m, 86.9 ± 9.9 kg) undertook a westbound flight incurring 22 hours of flight time with 30 hours of total travel time across 9 time zones. Athletes completed a single set of 6 loaded CMJ repetitions before and after travel with performance measured using a digital optical encoder attached to a 20 kg barbell. Each CMJ repetition was assessed for mean concentric velocity, jump height (JH), eccentric displacement, JH:dip ratio, me...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Contribution of Lean Mass Distribution on Aerobic Fitness and Performance in NCAA Division I Female Rowers
Haraldsdottir, K, Sanfilippo, J, Dawes, S, and Watson, A. Contribution of lean mass distribution on aerobic fitness and performance in NCAA division I female rowers. J Strength Cond Res 36(7): 1956–1960, 2022—The purpose of this study was to determine the relative influence of total lean body mass (LBM), body fat percentage (BF%), upper extremity lean mass (ULM), lower extremity lean mass (LLM), and trunk lean mass (TLM) on maximal aerobic capacity (V̇o2max) and time to exhaustion (Tmax) in female collegiate rowers. One hundred seven female collegiate rowers (aged 18–22 years) performed maximal progressive rowing er...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

The Validity of Automated Tackle Detection in Women's Rugby League
This study assessed the validity of microtechnology devices to automatically detect and differentiate tackles in elite women's rugby league match-play. Elite female players (n = 17) wore a microtechnology device (OptimEye S5 device; Catapult Group International) during a representative match, which involved a total of 512 tackles of which 365 were defensive and 147 were attacking. Tackles automatically detected by Catapult's tackle detection algorithm and video-coded tackles were time synchronized. True positive, false negative and false positive events were utilized to calculate sensitivity (i.e., when a tackle occurred, ...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Not All Physical Performance Tests Are Related to Early Season Match Running Performance in Professional Rugby League
This study aimed to determine which physical tests correlate with early season running performance. Sixteen professional rugby league players performed the 30-15 intermittent fitness test (IFT), 1.2-km time trial, 1 repetition maximum (RM) barbell back squat, isometric midthigh pull (IMTP), countermovement jump (CMJ), barbell squat jump (SJ), and ballistic bench press throw (BBP). Bivariate Pearson's correlations and linear regression were used to compare physical tests with peak match running intensities recorded by a portable Global Positioning System and represented by peak match velocity and acceleration, as well as pe...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Performance Differences Between the Arched and Flat Bench Press in Beginner and Experienced Paralympic Powerlifters
Neto, FR, Dorneles, JR, Luna, RM, Spina, MA, Gonçalves, CW, and Gomes Costa, RR. Performance differences between the arched and flat bench press in beginner and experienced Paralympic powerlifters. J Strength Cond Res 36(7): 1936–1943, 2022—The present study aimed to verify the differences of the total load, trajectory of the barbell in the sagittal plane, and mean velocity of the barbell between the arched and flat techniques of the bench press in beginner (BG) and experienced (EG) Paralympic powerlifters. Twenty beginners (age: 34.4 years; experience: 3.3 months) and 23 experienced (age: 35.5 years; experience: 9.8 ...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Does Sex Impact the Differences and Relationships in the One Repetition Maximum Performance Across Weightlifting Overhead Pressing Exercises?
This study aimed to determine the impact of sex on the differences and relationships of the one repetition maximum (1RM) performance between 3 overhead pressing exercises (push press [PP], push jerk [PJ] and split jerk [SJ]). 15 men (body mass [BM]: 82.3 ± 9.9 kg; weightlifting training experience: 2.6 ± 1.6 years) and 15 women (BM: 64.4 ± 7.0 kg; weightlifting training experience: 2.2 ± 1.4 years) participated in this study. A ratio-scaled (1RM·BM−1) was used for the comparison between them. The 1RM of the 3 exercises were evaluated within the same testing session using a combined 1RM assessment method. The interac...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Self-Report and Contemporaneously Recorded Running Agreement in Recreational Athletes
This study assesses agreement between self-reported running and contemporaneously collected running data. Self-reported running and corresponding contemporaneously recorded for current (at the time of questionnaire completion) and historical (6 months prior) was collected. Concordance Correlations and Bland-Altman Limits of Agreement measured extent of agreement. Categories for Metabolic Equivalent Task (MET) hours per week were calculated from total running distance. Unweighted and weighted Kappas were used to compare classification of levels of running by the 2 data sources. Running data were collected from 139 subjects ...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Effect of Carbohydrate Mouth Rinse on Resistance Exercise Performance
Green, MS, Kimmel, CS, Martin, TD, Mouser, JG, and Brune, MP. Effect of carbohydrate mouth rinse on resistance exercise performance. J Strength Cond Res 36(7): 1916–1921, 2022—A carbohydrate mouth rinse (CMR) has been shown to enhance short duration endurance performance and raises the possibility that a similar strategy could improve performance during resistance exercise. Eighteen male and female (N = 36) resistance trained subjects (mean values ± SD; age: 21.5 ± 1.6 years, height: 1.72 ± 0.09 m, body mass: 72.8 ± 13.4 kg, and body fat: 16.7 ± 5.8%) performed 3 experimental visits during which bench press resist...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Mud Pack With Menthol and Arnica Montana Accelerates Recovery Following a High-Volume Resistance Training Session for Lower Body in Trained Men
Bartolomei, S, Nigro, F, D'Amico, A, Cortesi, M, and Di Michele, R. Mud pack with menthol and Arnica montana accelerates recovery following a high-volume resistance training session for lower body in trained men. J Strength Cond Res 36(7): 1909–1915, 2022—The aim of this study was to compare the effects of a mud pack, containing menthol and Arnica montana, on the recovery responses following a high-volume resistance protocol. Ten resistance-trained men (mean ± SD: age = 25.3 ± 6.1 years; body mass = 79.1 ± 10.6 kg; height = 178.9 ± 7.5 cm) performed a high-volume resistance workout for lower body squat and leg exte...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Ergogenic Effects of Photobiomodulation on Performance in the 30-Second Wingate Test: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study
Molina Correa, JC, Padoin, S, Varoni, PR, Demarchi, MC, Flores, LJ, Nampo, FK, and de Paula Ramos, S. Ergogenic effects of photobiomodulation on performance in the 30-second Wingate test: A randomized, double-blind, placebo-controlled, crossover study. J Strength Cond Res 36(7): 1901–1908, 2022—The purpose of this study was to evaluate the ergogenic effects of red light (630 nm) photobiomodulation on anaerobic capacity in the Wingate test. Sixteen healthy and physically active male volunteers (21.71 ± 2.49 years of age, body mass index between 18.5 and 24.9 kg/m2) participated in this randomized, double-blind, placebo...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Anaerobic Threshold in Stand-up Paddle: Comparison Between Direct and Alternative Methods
Balikian, P, Gomes de Araujo, G, Prado, ES, Ryan Geraldes, AA, Marinho de Lima, AH, and Mendes, EV. Anaerobic threshold in stand-up paddle: comparison between direct and alternative methods. J Strength Cond Res 36(7): 1896–1900, 2022—The purpose of this study was to test the validity of alternative protocols, mean velocity during 30 minutes of continuous effort (V30min) and critical velocity (CV), to estimate the anaerobic threshold in stand-up paddle (SUP). Eight athletes performed: 3 maximal efforts at 400-, 500-, and 800-m distances to determine CV values, using the distance-time relationship; 3 efforts at 85, 90, a...
Source: Journal of Strength and Conditioning Research - June 27, 2022 Category: Sports Medicine Tags: Original Research Source Type: research