Freitas, Tomás T. Pereira, Lucas A. Alcaraz, Pedro E. Arruda, Ademir F. S. Guerriero, Aristide Azevedo, Paulo H. S. M. Loturco, Irineu
Published in
Journal of Human Kinetics
The aim of the present study was to investigate the influence of maximum strength and power levels on change of direction (COD) ability and deficit in elite soccer and rugby players. Seventy-eight elite athletes (soccer, n = 46; rugby, n = 32) performed the following assessments: squat and countermovement jumps (SJ and CMJ), 1 repetition-maximum in...
Tsoukos, Athanasios Brown, Lee E. Veligekas, Panagiotis Terzis, Gerasimos Bogdanis, Gregory C.
Published in
Journal of Human Kinetics
This study examined the acute effects of the bench press exercise with low and moderate loads as well as with two predetermined movement velocity loss percentages on bench press throw performance and surface electromyographic (sEMG) activity. Ten trained men completed 5 main trials in randomized and counterbalanced order one week apart. Mean propul...
Bartolomei, Sandro Totti, Valentina Nigro, Federico Ciacci, Simone Semprini, Gabriele Michele, Rocco Di Cortesi, Matteo Hoffman, Jay R.
Published in
Journal of Human Kinetics
The purpose of this study was to compare the physiological responses of a single bout of an eccentric accentuated bench press protocol (120% of 1RM in the eccentric phase/80% in the concentric phase; [120/80]) versus a regular high-intensity exercise protocol (80%/80%; [80/80]) in resistance-trained men. Eleven men (age = 25.6 ± 3.9 y; body mass = ...
Mastalerz, Andrzej Szyszka, Paulina Grantham, Weronika Sadowski, Jerzy
Published in
Journal of Human Kinetics
The aim of this study was to identify biomechanical factors affecting successful and unsuccessful snatch attempts in elite female weightlifters during the 2013 World Weightlifting Championships. Fourteen female competitors took part in this study. Their successful and unsuccessful snatch lifts with the same load were recorded with 2 camcorders (50 ...
Lockie, Robert G. Balfany, Katherine Denamur, Jenna K. Moreno, Matthew R.
Published in
Journal of Human Kinetics
A critical job task for law enforcement officers that should be influenced by strength is the body drag. This study analyzed relationships between absolute and relative strength measured by a one-repetition maximum hexagonal bar deadlift (1RM HBD), with body drags completed with 74.84 kg and 90.72 kg dummies. Twenty recreationally-trained individua...
Lasevicius, Thiago Schoenfeld, Brad Jon Grgic, Jozo Laurentino, Gilberto Tavares, Lucas Duarte Tricoli, Valmor
Published in
Journal of Human Kinetics
The purpose of the present study was to compare changes in muscle strength and hypertrophy between volume-equated resistance training (RT) performed 2 versus 3 times per week in trained men. Thirty-six resistance-trained men were randomly assigned to one of the two experimental groups: a split-body training routine (SPLIT) with muscle groups traine...
Grgic, Jozo Sabol, Filip Venier, Sandro Tallis, Jason Schoenfeld, Brad J. Coso, Juan Del Mikulic, Pavle
Published in
Journal of Human Kinetics
In this paper, we review the effects of caffeine on muscle strength and provide suggestions for caffeine supplementation in powerlifting competitions. The currently available studies indicate that caffeine ingestion may enhance strength in two powerlifting competition events, the squat and the bench press. For the deadlift, the same might be expect...
Kaczka, Piotr Michalczyk, Małgorzata Magdalena Jastrząb, Rafał Gawelczyk, Mateusz Kubicka, Katarzyna
Published in
Journal of Human Kinetics
Beta-hydroxy-beta-methylbutyrate (HMB) has been used extensively as a dietary supplement for athletes and physically active people. HMB is a leucine metabolite, which is one of three branched chain amino acids. HMB plays multiple roles in the human body of which most important ones include protein metabolism, insulin activity and skeletal muscle hy...
Suchomel, Timothy J. McKeever, Shana M. Sijuwade, Olusegun Carpenter, Logan McMahon, John J. Loturco, Irineu Comfort, Paul
Published in
Journal of Human Kinetics
The purpose of this study was to compare the power production characteristics of the jump squat (JS), hexagonal barbell jump (HEXJ), and jump shrug (JShrug) across a spectrum of relative loads. Fifteen resistance-trained men completed three testing sessions where they performed repetitions of either the JS, HEXJ, or JShrug at body mass (BM) or with...
Cleather, Daniel J Czasche, Maike B
Published in
Journal of Human Kinetics
Sex differences in biomechanics may provide one explanation for the greater incidence of knee injuries in women, but few studies have compared internal forces. In this study, a musculoskeletal model was used to compare male and female, bilateral and unilateral landings based on motion capture and force plate data. Participants were classified as la...
