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bench press

Richard M Schumacher, Jana L Arabas, Jerry L Mayhew, William F Brechue
The purpose of this study was to determine the effect of inter-investigator differences in anthropometric assessments on the prediction of one-repetition maximum (1RM) bench press in college football players. Division-II players (n = 34, age = 20.4 ± 1.2 y, 182.3 ± 6.6 cm, 99.1 ± 18.4 kg) were measured for selected anthropometric variables and 1RM bench press at the conclusion of a heavy resistance training program. Triceps, subscapular, and abdominal skinfolds were measured in triplicate by three investigators and used to estimate %fat...
2016: International Journal of Exercise Science
Yu Lun Tai, Hayden Gerhart, Xián Mayo, J Derek Kingsley
Aortic wave reflection characteristics such as the augmentation index (AIx), wasted left ventricular pressure energy (ΔEw ) and aortic haemodynamics, such as aortic systolic blood pressure (ASBP), strongly predict cardiovascular events. The effects of acute resistance exercise (ARE) using free-weight exercises on these characteristics are unknown. Therefore, we sought to determine the effects of acute free-weight resistance exercise on aortic wave reflection characteristics and aortic haemodynamics in resistance-trained individuals...
October 19, 2016: Clinical Physiology and Functional Imaging
Gerald T Mangine, Jay R Hoffman, Ran Wang, Adam M Gonzalez, Jeremy R Townsend, Adam J Wells, Adam R Jajtner, Kyle S Beyer, Carleigh H Boone, Amelia A Miramonti, Michael B LaMonica, David H Fukuda, Nicholas A Ratamess, Jeffrey R Stout
PURPOSE: To compare the effects of two different resistance training programs, high intensity (INT) and high volume (VOL), on changes in isometric force (FRC), rate of force development (RFD), and barbell velocity during dynamic strength testing. METHODS: Twenty-nine resistance-trained men were randomly assigned to either the INT (n = 15, 3-5 RM, 3-min rest interval) or VOL (n = 14, 10-12 RM, 1-min rest interval) training group for 8 weeks. All participants completed a 2-week preparatory phase prior to randomization...
October 15, 2016: European Journal of Applied Physiology
Tatiana Moro, Grant Tinsley, Antonino Bianco, Giuseppe Marcolin, Quirico Francesco Pacelli, Giuseppe Battaglia, Antonio Palma, Paulo Gentil, Marco Neri, Antonio Paoli
BACKGROUND: Intermittent fasting (IF) is an increasingly popular dietary approach used for weight loss and overall health. While there is an increasing body of evidence demonstrating beneficial effects of IF on blood lipids and other health outcomes in the overweight and obese, limited data are available about the effect of IF in athletes. Thus, the present study sought to investigate the effects of a modified IF protocol (i.e. time-restricted feeding) during resistance training in healthy resistance-trained males...
October 13, 2016: Journal of Translational Medicine
Gert Ulrich, Mario Parstorfer
PURPOSE: There is limited data on postactivation potentiation (PAP) effects following plyometric conditioning contractions (CC), especially in the upper body. Therefore, the study compared plyometric CC with concentric-eccentric and eccentric CC aiming to improve upper body power performance due to a PAP-effect. METHODS: Sixteen resistance-trained males completed three experimental trials in a randomized order which composed of either a plyometric (PLY), a concentric-eccentric (CON) or an eccentric-only (ECC) CC...
October 13, 2016: International Journal of Sports Physiology and Performance
Vinícius Yan Santos Nacimento, Rafaela Joyce Barbosa Torres, Natália Barros Beltrão, Priscila Soares Dos Santos, André Luiz Torres Pirauá, Valéria Mayaly Alves de Oliveira, Ana Carolina Rodarti Pitangui, Rodrigo Cappato de Araújo
This study evaluated the effects of instability on the EMG activity of scapular stabilizing and upper limb muscles during exercises with axial and rotational load. 20 male volunteers (20.9 ± 1.8 years, 174.1 ± 0.04 cm, 73.17 ± 8.77 kg) experienced in strength training participated in a crossover design. Muscle activation of anterior deltoid (AD), posterior deltoid (PD), pectoralis major (PM), biceps brachii (BB), triceps brachii (TB), upper trapezius (UT), middle trapezius (MT), lower trapezius (LT) and serratus anterior (SA) were determined on both conditions...
October 13, 2016: Journal of Applied Biomechanics
Sean McIntire, Lee Boujie, John Leasiolagi
Injuries involving rupture of the pectoralis major are relatively rare. When they do occur, it is mostly frequently in a young, athletic man. The most common cause is weight lifting that results in eccentric muscle contraction (muscle contraction against an overbearing force, leading to muscle lengthening)-specifically, the bench press. Other mechanisms for this injury include forceful abduction and external rotation of the arm. Injury can occur anywhere along the pectoralis major from its medial origin on the sternum and clavicle to its lateral tendinous insertion on the humerus...
2016: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
Christopher M Lockwood, Michael D Roberts, Vincent J Dalbo, Abbie E Smith-Ryan, Kristina L Kendall, Jordan R Moon, Jeffrey R Stout
OBJECTIVE: The objective of this study was to compare the chronic effects of different whey protein forms on body composition and performance when supplemented with resistance training. METHODS: Resistance-trained men (N = 56, 21.4 ± 0.4 years, 79.5 ± 1.0 kg) participated in an 8-week resistance training regimen (2 upper-body sessions and 2 lower-body sessions per week) and received one of 4 double-blinded treatments: 30 g/serving carbohydrate placebo (PLA) or 30 g/serving protein from either (a) 80% whey protein concentrate (WPC), (b) high-lactoferrin-containing WPC (WPC-L), or (c) extensively hydrolyzed WPC (WPH)...
October 6, 2016: Journal of the American College of Nutrition
Janet A Smereck, Argyro Papafilippaki, Sawali Sudarshan
Bench press exercise, which involves repetitive lifting of weights to full arm extension while lying supine on a narrow bench, has been associated with complications ranging in acuity from simple pectoral muscle strain, to aortic and coronary artery dissection. A 39-year-old man, physically fit and previously asymptomatic, presented with acute chest pain following bench press exercise. Diagnostic evaluation led to the discovery of critical multivessel coronary occlusive disease, and subsequently, highly elevated levels of lipoprotein (a)...
2016: Open Access Emergency Medicine: OAEM
Marco Antonio Soriano, Timothy J Suchomel, Pedro J Marín
BACKGROUND: External mechanical power is considered to be one of the most important characteristics with regard to sport performance. OBJECTIVE: The purpose of this meta-analysis was to examine the effect of load on kinetic variables such as mean and peak power during bench press and bench press throw, thus integrating the findings of various studies to provide the strength and conditioning professional with more reliable evidence upon which to base their program design...
October 3, 2016: Sports Medicine
Frank A Cordasco, Gregory T Mahony, Nicholas Tsouris, Ryan M Degen
BACKGROUND: There are limited data on the outcomes of surgically repaired pectoralis major tendon (PMT) tears. The purpose of this study was to report the functional outcomes, return to sport, and second surgery rates in a consecutive series of PMT tears. METHODS: Forty patients with acutely repaired PMT tears were retrospectively identified. Follow-up was conducted with functional outcome scores and adduction strength testing at final follow-up. Return to sport and incidence of subsequent surgery were also recorded...
September 30, 2016: Journal of Shoulder and Elbow Surgery
Valdemar Stajer, Tatjana Trivic, Patrik Drid, Milan Vranes, Sergej M Ostojic
We evaluated the effects of exercise on circulating concentrations of guanidinoacetic acid (GAA) and creatine in 23 healthy volunteers subjected to running to exhaustion and free-weight bench-press to volitional failure. Blood was taken before and following each exercise session. Running induced a significant decrease in serum GAA by 20.1% (P < 0.001), while free-weight exercise reduced GAA by 11.7% (P < 0.001), suggesting the possible use of serum GAA as a novel biomarker of exhaustion.
July 19, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Alcino D Carvalho, José A Rodrigues Santos
BACKGROUND: Previous studies have shown that total-body resistance training (RT) performed two to three alternating days per week has positive effects on muscle strength and body composition. However, no evidence exists to determine if total-body RT workouts done on consecutive days (CD) are beneficial. Therefore, the purpose of this study was to compare the effects of a total-body RT program performed on three con- secutive or nonconsecutive days (NCD) per week for 7 weeks on maximum strength and body composition in recreationally trained subjects...
September 29, 2016: Journal of Sports Medicine and Physical Fitness
Marcelo R C Dias, Roberto Simao, Francisco J F Saavedra, Nicholas A Ratamess
The purpose of this study was to compare differences in muscle strength and self-selected resistance training intensities between trained subjects who trained under the supervision of a personal trainer (PT) and those who trained without supervision (WoPT). Twenty-one trained subjects, men (n = 12) and women (n = 9), completed three sessions (separated by 48 hours) in the following sequence: (1) self-selected intensity assessment consisting of performance of three sets of 10 repetitions for the leg press, bench press, leg extension, and arm curl exercises with self-selected load; (2) a one repetition-maximum (1RM) test to determine subjects' maximal strength in the four exercises; and (3) a 10 repetition-maximum (10RM) test to determine the maximum load completed for 10 repetitions for each exercise...
September 23, 2016: Journal of Strength and Conditioning Research
Atle Hole Saeterbakken, Vidar Andersen, David G Behm, Espen Krogseth Krohn-Hansen, Mats Smaamo, Marius Steiro Fimland
PURPOSE: The aim of the study was to assess the task-specificity (greater improvements in trained compared to non-trained tasks), transferability and time-course adaptations of resistance-training programs with varying instability requirements. METHOD: Thirty-six resistance-trained men were randomized to train chest press 2 days week(-1) for 10 week (6 repetitions × 4 series) using a Swiss ball, Smith machine or dumbbells. A six-repetition maximum-strength test with the aforementioned exercises and traditional barbell chest press were performed by all participants at the first, 7th, 14th and final training session in addition to electromyographic activities of the prime movers measured during isometric bench press...
September 26, 2016: European Journal of Applied Physiology
Déborah de Araújo Farias, Jeffrey M Willardson, Gabriel A Paz, Ewertton de S Bezerra, Humberto Miranda
The purpose of this study was to investigate muscle activation, total repetitions and training volume for three bench press exercise modes [Smith machine (SMBP), barbell (BBP), and dumbbell (DBP)] that were followed by a triceps extension (TE) exercise. Nineteen trained men performed three testing protocols in random order, which included: P1) SMBP + TE; P2) BBP + TE; P3) DBP + TE. Each protocol involved four sets with a 10RM load, immediately followed by a triceps extension exercise that was also performed for four sets with a 10RM load...
September 21, 2016: Journal of Strength and Conditioning Research
Erica J Roelofs, Abbie E Smith-Ryan, Eric T Trexler, Katie R Hirsch, Meredith G Mock
The effects of pomegranate extract (PE) supplementation were evaluated on high-intensity exercise performance, blood flow, vessel diameter, oxygen saturation (SPO2), heart rate (HR), and blood pressure (BP). In a randomized, crossover design, nineteen recreationally resistance-trained participants were randomly assigned to PE (1000 mg) or placebo (PL), which were consumed 30 min prior to a repeated sprint ability (RSA) test and repetitions to fatigue (RTF) on bench and leg press. The RSA consisted of ten six-second sprints on a friction-loaded cycle ergometer with 30 s recovery...
September 20, 2016: European Journal of Sport Science
Lachlan P James, Emma M Beckman, Vincent G Kelly, G Gregory Haff
PURPOSE: To determine whether the maximal strength, impulse and power characteristics of competitive mixed martial arts (MMA) athletes differ according to competition level. METHODS: Twenty-nine male semi-professional and amateur MMA competitors were stratified into either higher-level (HL) or lower-level (LL) performers on the basis of competition grade and success. The one-repetition maximum (1RM) squat was used to assess lower body dynamic strength, while a spectrum of impulse, power, force and velocity variables were evaluated during an incremental load jump squat...
September 15, 2016: International Journal of Sports Physiology and Performance
Carmen Fiuza-Luces, Julio R Padilla, Luisa Soares-Miranda, Elena Santana-Sosa, Jaime V Quiroga, Alejandro Santos-Lozano, Helios Pareja-Galeano, Fabian Sanchis-Gomar, Rosalía Lorenzo-González, Zoraida Verde, Luis M López-Mojares, Alvaro Lassaletta, Steven J Fleck, Margarita Pérez, Antonio Pérez-Martínez, Alejandro Lucia
INTRODUCTION: The randomized controlled trial 'Physical Activity in Pediatric Cancer' (PAPEC) determined the effects of an in-hospital exercise intervention combining aerobic and muscle strength training on pediatric cancer patients with solid tumors undergoing neoadjuvant chemotherapy. METHODS: Participants were allocated to an exercise (n=24, 17 boys; mean±SEM age 10±1y) or control group (n=25, 18 boys; 11±1y). Training included three sessions/week for 19±2 weeks...
September 14, 2016: Medicine and Science in Sports and Exercise
Claudia M Meirelles, Cristiane Matsuura
BACKGROUND: L-arginine is a semi-essential amino acid involved in nitric oxide production. As nitric oxide is an important vasodilator, L-arginine supplementation would increase blood perfusion and, subsequently, muscle performance during exercises. The aim of this study was to determine the acute effect of L-arginine supplementation on strength performance and nitric oxide levels in healthy trained individuals. METHODS: In a doubleblind, placebo-controlled, cross-over study, 12 men were randomly assigned to L-arginine or placebo supplementation...
September 13, 2016: Journal of Sports Medicine and Physical Fitness
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