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https://www.readbyqxmd.com/read/28225524/the-effects-of-ballistic-and-non-ballistic-bench-press-on-mechanical-variables
#1
Gavin L Moir, Shawn N Munford, Lindsey L Moroski, Shala E Davis
PURPOSE: To investigate the effects of ballistic and non-ballistic bench press performed with loads equivalent to 30 and 90% 1-repetition maximum (1-RM) on mechanical variables. METHODS: Eleven resistance-trained men (age: 23.0 ± 1.4 years; mass: 98.4 ± 14.4 kg) attended four testing sessions where they performed one of the following sessions: 1) three sets of five non-ballistic repetitions performed with a load equivalent to 30% 1-RM (30N-B), 2) three sets of five ballistic repetitions performed with a load equivalent to 30% 1-RM (30B), 3) three sets of four non-ballistic repetitions with a load equivalent to 90% 1-RM (90N-B), 4) three sets of four ballistic repetitions with a load equivalent to 90% 1-RM (90B)...
February 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28222577/acute-ingestion-of-neuromuscular-enhancement-supplements-do-not-improve-power-output-work-capacity-and-cognition
#2
Jennifer A Bunn, Andrew Crossley, Morgan D Timiney
BACKGROUND: Improving motor unit recruitment and function is trainable and positively affects performance. Evidence suggests that supplementation of choline, uridine, and docosahexaenoic acid (DHA) may also enhance neuromuscular function. The purpose of this study was to assess the influence of acute ingestion of these supplements on anaerobic exercise performance and cognition. METHODS: Twenty college-aged trained males (21.2 ± 1.4 years, 181.2 ± 6.1 cm, 94.4 ± 20...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28217216/repair-of-double-head-pectoralis-major-tendon-avulsion-into-its-native-footprint-using-bi-cortical-endobuttons-and-tendon-sliding-technique
#3
Jagadish Prabhu, Mohammed Khalid Faqi, Fahad Alkhalifa, Bader Kamal Tayara, Rashad Khamis Awad
Injuries to the pectoralis major muscle are relatively infrequent. The mechanism of injury is usually an eccentric shortening of the pectoralis major under heavy load, such as when performing a bench press exercise. We report a case that presented to us with a history of sudden pain in the left pectoral region while doing heavy bench press exercise. The patient sustained a type III D pectoralis muscle -tendon avulsion. Surgical repair was done through a bi-cortical tendon sliding technique using two cortical buttons...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28195973/repetition-performance-and-blood-lactate-responses-adopting-different-recovery-periods-between-training-sessions-in-trained-men
#4
Humberto Miranda, Marianna de Freitas Maia, Gabriel Andrade Paz, João A A A de Souza, Roberto Simão, Déborah de Araújo Farias, Jeffrey M Willardson
The purpose of this study was to examine the effect of different recovery periods (24h, 48h, and 72h) between repeated resistance training (RT) sessions for the upper body muscles on repetition performance and blood lactate responses in trained men. Sixteen recreationally trained men (age: 26.1 ± 3.1 years; height: 179 ± 4.5 cm; body mass: 82.6 ± 4.0 kg, 4.5 ± 2.2 years of RT experience) participated in this study. Eight-repetition maximum (8-RM) loads were determined for the bench press (BP), 30° incline bench press (BP30), and 45° incline bench press (BP45) exercises...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28192832/velocity-loss-as-a-variable-for-monitoring-resistance-exercise
#5
Juan José González-Badillo, Juan Manuel Yañez-García, Ricardo Mora-Custodio, David Rodríguez-Rosell
This study aimed to analyze: 1) the pattern of repetition velocity decline during a single set to failure against different submaximal loads (50-85% 1RM) in the bench press exercise; and 2) the reliability of the percentage of performed repetitions, with respect to the maximum possible number that can be completed, when different magnitudes of velocity loss have been reached within each set. Twenty-two men performed 8 tests of maximum number of repetitions (MNR) against loads of 50-55-60-65-70-75-80-85% 1RM, in random order, every 6-7 days...
February 13, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28177725/effects-of-phosphatidic-acid-supplementation-on-muscle-thickness-and-strength-in-resistance-trained-men
#6
Adam M Gonzalez, Katie M Sell, Jamie J Ghigiarelli, Christopher F Kelly, Edward W Shone, Matthew R Accetta, Jamie B Baum, Gerald T Mangine
The purpose of this study was to investigate the effects of phosphatidic acid (PA) supplementation on muscle thickness and strength following an 8-week supervised resistance-training program. Fifteen resistance trained men (22.8±3.5 y; 80.6±8.7 kg; 178.1±5.6 cm; 14.6±8.8% body fat) were randomly assigned to a group that either consumed 750 mg of PA or a placebo (PL). Testing was carried out before (PRE) and after (POST) training/supplementation for muscle thickness and strength. Muscle thickness of the rectus femoris (RF), vastus lateralis (VL), biceps brachii (BB), and triceps brachii (TB) muscles were measured via ultrasonography along with one repetition maximum (1RM) of squat, deadlift, and bench press...
January 5, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28173929/postflight-reconditioning-for-european-astronauts-a-case-report-of-recovery-after-six-months-in-space
#7
Nora Petersen, Gunda Lambrecht, Jonathan Scott, Natalie Hirsch, Maria Stokes, Joachim Mester
BACKGROUND: Postflight reconditioning of astronauts is understudied. Despite a rigorous, daily inflight exercise countermeasures programme during six months in microgravity (μG) on-board the International Space Station (ISS), physiological impairments occur and postflight reconditioning is still required on return to Earth. Such postflight programmes are implemented by space agency reconditioning specialists. Case Description and Assessments: A 38 year old male European Space Agency (ESA) crewmember's pre- and postflight (at six and 21 days after landing) physical performance from a six-month mission to ISS are described...
January 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28170449/a-systematic-review-of-surface-electromyography-analyses-of-the-bench-press-movement-task
#8
Petr Stastny, Artur Gołaś, Dusan Blazek, Adam Maszczyk, Michał Wilk, Przemysław Pietraszewski, Miroslav Petr, Petr Uhlir, Adam Zając
BACKGROUND: The bench press exercise (BP) plays an important role in recreational and professional training, in which muscle activity is an important multifactorial phenomenon. The objective of this paper is to systematically review electromyography (EMG) studies performed on the barbell BP exercise to answer the following research questions: Which muscles show the greatest activity during the flat BP? Which changes in muscle activity are related to specific conditions under which the BP movement is performed? STRATEGY: PubMed, Scopus, Web of Science and Cochrane Central Register of Controlled Trials (CENTRAL) in the Cochrane Library were searched through June 10, 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28167185/the-bench-press-the-most-misunderstood-lift-in-strength-conditioning
#9
Brian Carroll, D C Craig Liebenson
No abstract text is available yet for this article.
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28166187/evaluating-upper-body-strength-and-power-from-a-single-test-the-ballistic-push-up
#10
Ran Wang, Jay R Hoffman, Eliahu Sadres, Sandro Bartolomei, Tyler W D Muddle, David H Fukuda, Jeffrey R Stout
PURPOSE: The purpose of this study was to examine the reliability of the ballistic push-up (BPU) exercise, and to develop a prediction model for both maximal strength (1RM) in the bench press exercise and upper body power. METHODS: Sixty recreationally-active men completed a 1RM bench press and two BPU assessments in three separate testing sessions. Peak and mean force, peak and mean rate of force development, net impulse, peak velocity, flight time, and peak and mean power were determined...
February 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28149422/comparison-of-oxygen-uptake-during-and-after-the-execution-of-resistance-exercises-and-exercises-performed-on-ergometers-matched-for-intensity
#11
José Vilaça-Alves, Nuno Miguel Freitas, Francisco José Saavedra, Christopher B Scott, Victor Machado Dos Reis, Roberto Simão, Nuno Garrido
The aim of this study was to compare the values of oxygen uptake (VO2) during and after strength training exercises (STe) and ergometer exercises (Ee), matched for intensity and exercise time. Eight men (24 ± 2.33 years) performed upper and lower body cycling Ee at the individual's ventilatory threshold (VE/VCO2). The STe session included half squats and the bench press which were performed with a load at the individual blood lactate concentration of 4 mmol/l. Both sessions lasted 30 minutes, alternating 50 seconds of effort with a 10 second transition time between upper and lower body work...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28149414/neuroendocrine-responses-and-body-composition-changes-following-resistance-training-under-normobaric-hypoxia
#12
Jakub Chycki, Miłośz Czuba, Artur Gołaś, Adam Zając, Olga Fidos-Czuba, Adrian Młynarz, Wojciech Smółka
The aim of the present study was to evaluate the effects of a 6 week resistance training protocol under hypoxic conditions (FiO2 = 12.9%, 4000 m) on muscle hypertrophy. The project included 12 resistance trained male subjects, randomly divided into two experimental groups. Group 1 (n = 6; age 21 ± 2.4 years; body height [BH] 178.8 ± 7.3 cm; body mass [BM] 80.6 ± 12.3 kg) and group 2 (n = 6; age 22 ± 1.5 years; BH 177.8 ± 3.7cm; BM 81.1 ± 7.5 kg). Each group performed resistance exercises alternately under normoxic and hypoxic conditions (4000 m) for 6 weeks...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28149376/a-new-physical-performance-classification-system-for-elite-handball-players-cluster-analysis
#13
Iker J Bautista, Ignacio J Chirosa, Joseph E Robinson, Roland van der Tillaar, Luis J Chirosa, Isidoro Martínez Martín
The aim of the present study was to identify different cluster groups of handball players according to their physical performance level assessed in a series of physical assessments, which could then be used to design a training program based on individual strengths and weaknesses, and to determine which of these variables best identified elite performance in a group of under-19 [U19] national level handball players. Players of the U19 National Handball team (n=16) performed a set of tests to determine: 10 m (ST10) and 20 m (ST20) sprint time, ball release velocity (BRv), countermovement jump (CMJ) height and squat jump (SJ) height...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28146030/strength-and-conditioning-practices-in-adolescent-rugby-players-relationship-with-changes-in-physical-qualities
#14
Jonathon J S Weakley, Kevin Till, Joshua Darrall-Jones, Gregory A B Roe, Padraic J Phibbs, Dale Read, Ben L Jones
Adolescent rugby players benefit from the implementation of resistance training. However resistance training practices and how they influence short-term physical change is unknown. Therefore the purpose of this study was to quantify resistance training practices, evaluate physical development, and relate these changes to resistance training variables across 12-weeks in adolescent rugby union players. Thirty-five male adolescent rugby union players participated in the study with subjects completing an anthropometric and physical testing battery pre- and post- a 12-week in-season mesocycle...
January 30, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28129278/loading-intensity-prediction-by-velocity-and-the-omni-res-0-10-scale-in-bench-press
#15
Fernando Naclerio, Eneko Larumbe-Zabala
Naclerio, F and Larumbe-Zabala, E. Loading intensity prediction by velocity and the OMNI-RES 0-10 scale in bench press. J Strength Cond Res 32(1): 323-329, 2017-This study examined the possibility of using movement velocity and the perceived exertion as indicators of relative load in the bench press (BP) exercise. A total of 308 young, healthy, resistance trained athletes (242 men and 66 women) performed a progressive strength test up to the one repetition maximum for the individual determination of the full load-velocity and load-exertion relationships...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28129275/comparison-of-powerlifting-performance-in-trained-men-using-traditional-and-flexible-daily-undulating-periodization
#16
Ryan J Colquhoun, Christopher M Gai, Jeoffrey Walters, Andrew R Brannon, Marcus W Kilpatrick, Dominic P DʼAgostino, William I Campbell
Colquhoun, RJ, Gai, CM, Walters, J, Brannon, AR, Kilpatrick, MW, D'Agostino, DP, and Campbell, WI. Comparison of powerlifting performance in trained men using traditional and flexible daily undulating periodization. J Strength Cond Res 31(2): 283-291, 2017-Daily undulating periodization (DUP) is a growing trend, both in practice and in the scientific literature. A new form of DUP, flexible daily undulating periodization (FDUP), allows for athletes to have some autonomy by choosing the order of their training...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28128973/the-role-of-volume-load-in-strength-and-absolute-endurance-adaptations-in-adolescent-s-performing-high-or-low-load-resistance-training
#17
RANDOMIZED CONTROLLED TRIAL
James Steele, James P Fisher, Ari R Assunção, Martim Bottaro, Paulo Gentil
This study compared high- (HL) and low-load (LL) resistance training (RT) on strength, absolute endurance, volume-load, and their relationships in untrained adolescents. Thirty-three untrained adolescents of both sexes (males, n = 17; females, n = 16; 14 ± 1 years) were randomly assigned into either (i) HL (n = 17): performing 3 sets of 4-6 repetitions to momentary concentric failure; or (ii) LL (n = 16): performing 2 sets of 12-15 repetitions to momentary concentric failure. RT was performed for 2×/week for 9 weeks...
February 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28127562/declining-physical-performance-associates-with-serum-fasl-mir-21-and-mir-146a-in-aging-sprinters
#18
Reeta Kangas, Timo Törmäkangas, Ari Heinonen, Markku Alen, Harri Suominen, Vuokko Kovanen, Eija K Laakkonen, Marko T Korhonen
Aging is associated with systemic inflammation and cellular apoptosis accelerating physiological dysfunctions. Whether physically active way of life affects these associations is unclear. This study measured the levels of serum inflammatory and apoptotic molecules, their change over 10 years, and their associations with physical performance in sprint-trained male athletes. HsCRP, cell counts, HGB, FasL, miR-21, and miR-146a were measured cross-sectionally (n = 67, 18-90 yrs) and serum FasL, miR-21, and miR-146a and their aging-related associations with physical performance were assessed over a 10-year follow-up (n = 49, 50-90 yrs)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28125544/acute-effect-of-countermovement-jumping-on-throwing-performance-in-track-and-field-athletes-during-competition
#19
Giorgos P Karampatsos, Panagiotis G Korfiatis, Nikolaos D Zaras, Giorgos V Georgiadis, Gerasimos D Terzis
Karampatsos, GP, Korfiatis, PG, Zaras, ND, Georgiadis, GV, and Terzis, GD. Acute effect of countermovement jumping on throwing performance in track and field athletes during competition. J Strength Cond Res 32(1): 359-364, 2017-The purpose of the study was to investigate whether performing 3 consecutive countermovement jumps (CMJs) just before an attempt enhances performance in track and field throwers during competition. Twelve shot putters, 8 hammer throwers, 9 discus throwers, and 3 javelin throwers of both sexes participated in the study...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28121227/reliability-of-a-new-medicine-ball-throw-power-test
#20
Mark G L Sayers, Stephen Bishop
The purpose of this study was to examine the reliability of a new upper body medicine ball push-press (MBP-P) test. Twenty-three strength trained volunteers performed a series of supine MBP-P throws using loads representing 5% and10% of their 5RM bench press (5 repetitions at each load). Throws were performed on a force platform (2000 Hz), with medicine ball kinematic data collected using a high-speed motion capture (500 Hz). Testing was repeated after 7-10 days to quantify inter-test reliability. Maximal force (Fmax), impulse at Fmax, time to Fmax, maximum rate of force development (RFDmax) were all calculated from the force platform outputs, with maximum ball velocity (Velmax) and maximum ball acceleration (Accelmax) developed from the kinematic data...
January 25, 2017: Journal of Applied Biomechanics
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