Journal of Strength and Conditioning Research 
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This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.Male-Female Differences in Push-up Test Performance at Various Cadences
Rozenek, R, Byrne, JJ, Crussemeyer, J, and Garhammer, J. Male-Female Differences in Push-up Test Performance at Various Cadences. J Strength Cond Res 36(12): 3324–3329, 2022—Push-up (PU) testing is widely used to assess upper-extremity muscular endurance. However, little information exists regarding the influence of cadence on PU performance. Forty-four healthy men and women (age range = 21–36 years) completed 4 PU test sessions on separate days in a randomized order using standard PUs. Cadences of 30, 45, and 60 PU·min−1 were used for 3 tests, whereas a fourth test was performed at a self-selected (SS) cadence. T...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Effect of Neutral, Internal, and External Focus on Drop Jump Performance: Is Drop Jump Performance Affected by Plyometric Training Experience?
Furuhashi, Y, Hioki, Y, Yoshimoto, S, and Hayashi, R. The effect of neutral, internal, and external focus on drop jump performance: is drop jump performance affected by plyometric training experience? J Strength Cond XX(X): 000–000, 2021—Providing an external focus of attention through verbal instructions can improve the drop jump (DJ) performance, which differs based on the skill level of athletes. The purpose of this study was to assess the effect of change of focus of attention on the performance of DJs in experienced and inexperienced athletes. Thirty-eight male collegiate athletes divided into the experienced grou...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Effects of Differing Foam Rolling Periods on Training Volume and Myoelectric Responses of Lower-Body Muscles
Santana, HG, Paz, GA, Willardson, JM, de Araújo Farias, D, and Miranda, H. Effects of differing foam rolling periods on training volume and myoelectric responses of lower-body muscles. J Strength Cond Res 36(12): 3311–3318, 2022—Foam rolling (FR) is a practice that has increased in popularity before and after resistance training. The purpose of this study was to compare the acute effects of different foam rolling periods for the lower body muscles on subsequent performance, myoelectric activity and rating of perceived exertion in trained men. Fourteen men (26.2 ± 3.2 years, 178 ± 0.04 cm, 82.2 ± 10 kg and body mass...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Phototherapy Improves Muscle Recovery and Does Not Impair Repeated Bout Effect in Plyometric Exercise
Padoin, S, Zeffa, AC, Molina Corrêa, JC, de Angelis, TR, Moreira, TB, Barazetti, LK, and de Paula Ramos, S. Phototherapy improves muscle recovery and does not impair repeated bout effect in plyometric exercise. J Strength Cond Res 36(12): 3301–3310, 2022—The effects of photobiomodulation with red (630 nm) and near-infrared (940 nm) light wavelengths were investigated on the inhibition of exercise-induced muscle damage (EIMD) and adaptation to the repeated bout effect (RBE). Twenty-eight healthy men were randomized to receive light-emitting diode therapy (LEDT) at 630 nm (4.6 J·cm−2, 97 J energy), LEDT at 940 nm (4....
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Measurement Agreement Between Samozino's Method and Force Plate Force-Velocity Profiles During Barbell and Hexbar Countermovement Jumps
This study aimed to measure agreement between using Samozino's method and force plates to determine mean force, velocity, and power during unloaded and loaded barbell and hexbar countermovement jumps. Twenty-one subjects performed countermovement jumps against incremental loads using both loading conditions. Ground reaction force was recorded using a dual-force plate system (1,000 Hz) and used as the criterion method to compare with Samozino's method. Reliability and validity was determined by intraclass correlation coefficients (ICCs), coefficient of variation (CV), limits of agreement plots, and least products regression...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Effects of Alternating Unilateral vs. Bilateral Resistance Training on Sprint and Endurance Cycling Performance in Trained Endurance Athletes: A 3-Armed, Randomized, Controlled, Pilot Trial
Ji, S, Donath, L, and Wahl, P. Effects of alternating unilateral vs. bilateral resistance training on sprint and endurance cycling performance in trained endurance athletes: A 3-armed, randomized, controlled, pilot trial. J Strength Cond Res 36(12): 3280–3289, 2022—Traditional preparatory resistance training for cyclists mainly relies on simultaneous bilateral movement patterns. This lack of movement specificity may impede transfer effects to specific aerobic and anaerobic requirements on the bike. Hence, this study investigated the effects of resistance training in alternating unilateral vs. simultaneous bilateral mov...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Validity of Bioelectric Impedance in Relation to Dual-Energy X-Ray Absorptiometry for Measuring Baseline and Change in Body Composition After an Exercise Program in Stroke
Vanzella, LM, Lawand, R, Shuaib, M, Oh, P, Corbett, D, and Marzolini, S. Validity of bioelectric impedance in relation to dual-energy x-ray absorptiometry for measuring baseline and change in body composition after an exercise program in stroke. J Strength Cond Res 36(12): 3273–3279, 2022—Exercise is an important strategy to improve fat-free mass (FFM) and reduce percent fat mass (FM%). However, no study has reported on a valid, cost-effective method to measure changes in body composition after stroke. The purpose of the study is to determine the level of agreement between bioelectrical impedance analysis (BIA) and dua...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Reduction of T Cells and Hsa-miR150-5p in Female Canoeing Athletes: Preliminary Evidence Between Exercise Training and Immune
This article aims to reveal the alteration of immune profile in teenage canoeing athletes, by which applies a clue for regulation of exercise on human immune. Thirty-one teenagers of female canoeing athletes and age-matched subjects participated in this research. Peripheral leukocytes' microRNAs (miRNAs) were analyzed using Agilent human microRNA 2.0 and gene software. The miRNA candidates were quantified by reverse transcription real-time quantitative polymerase chain reaction (RT-qPCR). The percentages of various lymphocytes were tested using flow cytometry. There were 6 miRNAs (hsa-miR150-5p, 31-5p, 3659, 4419a, 650, an...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research
Time to Be Negative About Acceleration: A Spotlight on Female Football Players
Griffin, J, Horan, S, Keogh, J, Andreatta, M, and Minahan, C. Time to be negative about acceleration: A spotlight on female football players. J Strength Cond Res 36(11): 3264–3271, 2022—Women's football requires players to perform frequent changes in velocity (i.e., speed and direction) for successful performance. Although increases in velocity (“acceleration”) are important, decreases in velocity (“deceleration”) should also be considered equally important to performance and load monitoring. Currently, there is a disproportionate focus on acceleration and creating faster players. The aim of this review is to p...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research
Behaviors and Actions of the Strength and Conditioning Coach in Fostering a Positive Coach-Athlete Relationship
Carson, F, Blakey, M, Foulds, SJ, Hinck, K, and Hoffmann, SM. Behaviors and actions of the strength and conditioning coach in fostering a positive coach-athlete relationship. J Strength Cond Res 36(11): 3256–3263, 2022—A number of models have been developed to explain the various factors that affect coach-athlete interactions; however, they have had limited application to strength and conditioning (S&C). A systematic review of the literature was completed using the databases SPORTDiscus Full Text, MEDLINE, Global Health, Academic Search Complete, and PsychINFO, sourcing articles related to S&C coach-athlete relationshi...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research
Impact of Different Mechanical and Metabolic Stimuli on the Temporal Dynamics of Muscle Strength Adaptation
Lambrianides, Y, Epro, G, Smith, K, Mileva, K, James, D, and Karamanidis, K. Impact of different mechanical and metabolic stimuli on the temporal dynamics of muscle strength adaptation. J Strength Cond Res 36(11): 3246–3255, 2022—A fundamental task in exercise physiology is to determine and ultimately improve the adaptations that take place in the human body, an integrated network of various physiological systems, for example, muscle, tendon, and bone. Investigating the temporal dynamics (time course) of adaptations in these diverse systems may help us gain new knowledge about the functioning of the neuromotor system i...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research
Effects of Long-Haul Travel on Recovery and Performance in Elite Athletes: A Systematic Review
Rossiter, A, Warrington, GD, and Comyns, TM. Effects of long-haul travel on recovery and performance in elite athletes: a systematic review. J Strength Cond Res 36(11): 3234–3245, 2022—Elite athletes are often required to travel long-haul (LH) across numerous time zones for training or competition. However, the extent to which LH travel affects elite athlete performance remains largely unknown. The purpose of this systematic literature review was to critically evaluate available evidence on the effects of LH travel on elite athlete psychometric, physiological, sleep, and performance markers. Electronic database searche...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research
Ice Hockey Forward Skating Force-Velocity Profiling Using Single Unloaded vs. Multiple Loaded Methods
This study aimed to compare skating force-velocity relationships determined throughout sprints performed against various loaded conditions or inferred from movement kinetics measured during a single unloaded sprint. Ten female ice hockey players performed one unloaded maximal skating sprint test measured with a radar gun followed by 4 resisted skating sprints against a robotic horizontal resistance with progressive loads in reference to equipped body mass (BM): 3 kg (robotic resistance), 25, 50, and 75% of equipped BM. Maximal theoretical force (F0), velocity (V0), power (Pmax), optimal velocity (Vopt) condition for produc...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Technical Report Source Type: research
Monitoring Elite Soccer Players Physical Performance Using Real-Time Data Generated by Electronic Performance and Tracking Systems
Oliva-Lozano, JM, Martín-Fuentes, I, Granero-Gil, P, and Muyor, JM. Monitoring elite soccer players physical performance using real-time data generated by electronic performance and tracking systems. J Strength Cond Res 36(11): 3224–3228, 2022—The aims of this technical report were to analyze the validity of real-time data collected by electronic performance and tracking systems (EPTS) and investigate the effect of varying real-time receiver's position on the real-time data collected. Physical performance data were collected from professional soccer players using EPTS. In addition, 3 real-time receivers, which were pl...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Technical Report Source Type: research
Adaptations to a Concurrent Exercise Training Program in Inactive Aging Women
This study assessed the effect of a 10-week, sprint interval concurrent exercise training program on body composition and muscular strength in aging women. Sixty-five inactive women (age, 40–64 years) were randomized into 2 sprint interval exercise programs, 0% incline and 6% incline. Sprint interval training was performed to achieve 95% of each subject's age-predicted maximal heart rate for a series of 40 seconds of work followed by 20 seconds of passive recovery. An undulating resistance training protocol, composed of 30 sessions, was performed by each group throughout the study. Dual-energy X-ray absorption scans were...
Source: Journal of Strength and Conditioning Research - October 28, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
