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https://www.readbyqxmd.com/read/29161094/the-effect-of-resistance-training-in-a-hypoxic-chamber-on-physical-performance-in-elite-rugby-athletes
#1
Brad Mayo, Cory Miles, Stacy Sims, Matthew Driller
Mayo, Brad, Cory Miles, Stacy Sims, and Matthew Driller. The effect of resistance training in a hypoxic chamber on physical performance in elite rugby athletes. High Alt Med Biol 00:000-000, 2017.-Limited research suggests that muscle adaptations may be enhanced through resistance training in a hypoxic environment. Seventeen professional rugby union athletes (age [mean ± SD], 24 ± 3 years; body mass, 98.7 ± 12.8 kg; and height, 188.9 ± 7.9 cm), performed 12 resistance training sessions over a 3-week period...
November 21, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29160140/the-effects-of-weighted-skates-on-ice-skating-kinematics-kinetics-and-muscular-activity
#2
Matthew P Mavor, Dean C Hay, Ryan B Graham
Sport-specific resistance training, through limb loading, can be a complimentary training method to traditional resistance training by loading the working muscles during all phases of a specific movement. The purpose of this study was to examine the acute effects of skating with an additional load on the skate, using a skate weight prototype, on kinematics, kinetics, and muscle activation during the acceleration phase while skating on a synthetic ice surface. 10 male hockey skaters accelerated from rest (standing erect with knees slightly bent) under four non-randomized load conditions: baseline 1 (no weight), light (0...
November 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29156985/isolated-lumbar-extension-resistance-training-improves-strength-pain-and-disability-but-not-spinal-height-or-shrinkage-creep-in-participants-with-chronic-low-back-pain
#3
James Steele, Stewart Bruce-Low, Dave Smith, David Jessop, Neil Osborne
OBJECTIVE: Loss of disc height is commonly associated with chronic low back pain (CLBP). Isolated lumbar extension (ILEX) exercise for the lumbar extensors is recommended to treat CLBP and is suggested such exercise might promote disc healing and regeneration. This study examined a 12-week ILEX intervention on indirect determination of disc height and shrinkage through seated stadiometry, strength, pain, and disability. DESIGN: A quasi-experimental wait-list controlled design was used...
February 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29148630/men-exhibit-greater-fatigue-resistance-than-women-in-alternated-bench-press-and-leg-press-exercises
#4
Estêvão R Monteiro, James Steele, Jefferson S Novaes, Amanda F Brown, Mark T Cavanaugh, Jakob L Vingren, David G Behm
BACKGROUND: The purpose of this study was to evaluate the influence of sex, exercise order, and rest interval on neuromuscular fatigue resistance for an alternated strength training sequence of bench press (BP) and leg press (LP) exercises. METHODS: Twelve women and 16 men, both recreationally trained, performed four sessions in a random order: 1) BP followed by LP with three-minutes rest (BP+LP with rest), 2) LP followed by BP with three-minutes rest (LP+BP with rest), 3) BP followed by LP without rest interval (BP+LP no rest), and 4) LP followed by BP without rest interval (LP+BP no rest)...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29141853/the-effects-of-resistance-exercise-on-biomarkers-of-breast-cancer-prognosis-a-pooled-analysis-of-three-randomized-trials
#5
Kerri Winters-Stone, Lisa J Wood, Sydnee Stoyles, Nathan Dieckmann
BACKGROUND: Using a secondary data analysis from randomized controlled trials comparing one year of resistance exercise (N=109) to a placebo control condition (N=106) in postmenopausal, post-treatment breast cancer survivors, we investigated the influence of resistance training and changes in body composition on markers associated with cancer progression. METHODS: Measures included serum levels of insulin, IGF-1, IGFBP1-3, leptin, serum amyloid A (SAA), adiponectin, C-reactive protein (CRP), IL-1β, TNF-α, IL-6, and IL-8 and body composition (total, lean and fat mass in kg) by DXA at baseline, 6, and 12-months...
November 15, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29140911/effect-of-bench-press-load-knowledge-on-repetitions-rpe-and-attentional-focus
#6
Christina M Beaudoin, Zachary Cox, Tyler Dundore, Tayler Thomas, Johnathon Kim, Daniel Pillivant
Few studies have examined the role of the teleoanticipation during resistance training. The purpose of this study was to examine the effect of bench press (BP) load knowledge on repetitions completed, ratings of perceived exertion (RPE), and attentional focus (%associative). Thirty-six recreationally active resistance trained men (n = 25) and women (n = 11) participated in this study (age= 20.97 + 1.87 yrs; ht 174.12 + 9.41 cm; mass 80.14 + 14.03 kg). All subjects completed three testing sessions: 1) One-repetition maximum (1RM) BP determination; 2) Submaximal BP repetitions to fatigue known load (KL); 3) Submaximal BP repetitions to fatigue unknown load (UL)...
November 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140909/the-effects-of-load-on-peak-power-output-fatigue-during-the-bench-throw
#7
David Boffey, Bulent Sokmen, Kurt Sollanek, Wanda Boda, Steven Winter
The ability to create power is an important variable for athletic success. No study to date has compared peak power output (PPO) fatigue across multiple sets and with different loads with the bench throw. This study aimed to begin the process of establishing empirical upper body power training guidelines for moderately strong athletes by determining how load (30%, 45%, 60% 1RM) affects PPO (Watts) dropoff during 3 sets of 10 repetitions of the bench throw. 10 resistance-trained male volunteers ((mean ± SD): age 20...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140148/the-reliability-of-individualized-load-velocity-profiles
#8
Harry G Banyard, K Nosaka, Alex D Vernon, G Gregory Haff
PURPOSE: This study examined the reliability of peak velocity (PV), mean propulsive velocity (MPV), and mean velocity (MV) in the development of load-velocity profiles (LVP) in the full depth free-weight back squat performed with maximal concentric effort. METHODS: Eighteen resistance-trained men performed a baseline one-repetition maximum (1RM) back squat trial and three subsequent 1RM trials used for reliability analyses, with 48-hours interval between trials...
November 15, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29138605/effect-of-creatine-supplementation-during-resistance-training-on-lean-tissue-mass-and-muscular-strength-in-older-adults-a-meta-analysis
#9
REVIEW
Philip D Chilibeck, Mojtaba Kaviani, Darren G Candow, Gordon A Zello
The loss of muscle mass and strength with aging results in significant functional impairment. Creatine supplementation has been used in combination with resistance training as a strategy for increasing lean tissue mass and muscle strength in older adults, but results across studies are equivocal. We conducted a systematic review and meta-analysis of randomized controlled trials of creatine supplementation during resistance training in older adults with lean tissue mass, chest press strength, and leg press strength as outcomes by searching PubMed and SPORTDiscus databases...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/29129608/no-exacerbation-of-knee-joint-pain-and-effusion-following-preoperative-progressive-resistance-training-in-patients-scheduled-for-total-knee-arthroplasty-secondary-analyses-from-a-randomized-controlled-trial
#10
Birgit Skoffer, Ulrik Dalgas, Thomas Maribo, Kjeld Søballe, Inger Mechlenburg
BACKGROUND: Preoperative progressive resistance training (PRT) is controversial in patients scheduled for total knee arthroplasty (TKA), because of the concern that it may exacerbate knee joint pain and effusion. OBJECTIVE: To examine if preoperative PRT initiated 5 weeks prior to TKA would 1) exacerbate pain and knee effusion, 2) allow a progressively increased training load throughout the training period that would subsequently increase muscle strength. DESIGN: Secondary analyses from a randomized controlled trial...
November 9, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29127601/interpreting-adaptation-to-concurrent-compared-with-single-mode-exercise-training-some-methodological-considerations
#11
REVIEW
Jackson J Fyfe, Jeremy P Loenneke
Incorporating both endurance and resistance training into an exercise regime is termed concurrent training. While there is evidence that concurrent training can attenuate resistance training-induced improvements in maximal strength and muscle hypertrophy, research findings are often equivocal, with some suggesting short-term concurrent training may instead further enhance muscle hypertrophy versus resistance training alone. These observations have questioned the validity of the purported 'interference effect' on muscle hypertrophy with concurrent versus single-mode resistance training...
November 10, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29125017/the-effects-of-resistance-training-volume-on-osteosarcopenic-obesity-in-older-women
#12
Paolo M Cunha, Alex S Ribeiro, Crisieli M Tomeleri, Brad J Schoenfeld, Analiza M Silva, Mariana F Souza, Matheus A Nascimento, Luís B Sardinha, Edilson S Cyrino
The aim of this study was to analyze the effects of resistance training (RT) performed with 1 or 3 sets per exercise on osteosarcopenic obesity (OSO) syndrome parameters in older women. Sixty-two older women (68.0 ± 4.3 years, 26.8 ± 4.4 kg/m(2)) participated in a 12-week RT program. Participants were randomly assigned into one of the three groups: two training groups that performed either 1 set (G1S, n = 21) or 3 sets (G3S, n = 20) 3 times weekly, or a control group (CG, n = 21). Body composition was assessed by dual X-ray absorptiometry, strength was evaluated by 1 repetition maximum testing...
November 10, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29124498/effects-of-a-9-month-resistance-training-intervention-on-quality-of-life-sense-of-coherence-and-depressive-symptoms-in-older-adults-randomized-controlled-trial
#13
Tiia Kekäläinen, Katja Kokko, Sarianna Sipilä, Simon Walker
PURPOSE: (1) To determine the effects of a 9-month resistance training intervention on quality of life, sense of coherence, and depressive symptoms in older adults, and (2) to compare effects between different training frequencies. METHODS: Men and women aged 65-75 (N = 106) were randomized to four groups according to training frequency: training groups RT1 (n = 26), RT2 (n = 27), and RT3 (n = 28) and non-training control group (n = 25). All training groups attended supervised resistance training twice a week for 3 months...
November 9, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/29123629/effect-of-low-level-laser-therapy-and-strength-training-protocol-on-hand-grip-by-dynamometry
#14
Rafael Barbosa, Alexandre Marcolino, Vitor Souza, Guilherme Bertolino, Marisa Fonseca, Rinaldo Guirro
Introduction: The purpose of this study was to investigate the effect of low-level laser therapy (LLLT) - 660 nm and 904 nm - before grip strength protocol in healthy subjects. Methods: The study included 45 healthy volunteers with an average age of 22.7 (±1.4) years, subdivided into the following groups, control group: grip strength training associated with placebo LLLT; 660 nm group: LLLT (660 nm, 20 J/cm(2), power of 30 mW, and beam area of 0.06 cm(2), continuous, energy 1.2 J, and exposure time 40 seconds per point) before grip strength training and 904 nm group: LLLT (904 nm, 10 J/cm(2), peak power of 70 W and 0...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29122965/the-impact-of-dairy-protein-during-limb-immobilization-and-recovery-on-muscle-size-and-protein-synthesis-a-randomized-controlled-trial
#15
Cameron J Mitchell, Randall F D'Souza, Sarah M Mitchell, Vandre Casagrande Figueiredo, Benjamin F Miller, Karyn L Hamilton, Frederick F Peelor, Marcelli Coronet, Chantal A Pileggi, Brenan Durainayagam, Aaron C Fanning, Sally D Poppitt, David Cameron-Smith
Muscle disuse results in the loss of muscular strength and size, due to an imbalance between protein synthesis (MPS) and breakdown (MPB). Protein ingestion stimulates MPS, although it is not established if protein is able to attenuate muscle loss with immobilization (IM) or influence the recovery consisting of ambulatory movement followed by resistance training (RT). Thirty men (49.9±0.6 years) underwent 14 days of unilateral leg IM, 14 days of ambulatory recovery (AR) and a further 6 RT sessions over 14 days...
November 9, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29121964/muscle-force-distribution-of-the-lower-limbs-during-walking-in-diabetic-individuals-with-and-without-polyneuropathy
#16
Aline A Gomes, Marko Ackermann, Jean P Ferreira, Maria Isabel V Orselli, Isabel C N Sacco
BACKGROUND: Muscle force estimation could advance the comprehension of the neuromuscular strategies that diabetic patients adopt to preserve walking ability, which guarantees their independence as they deal with their neural and muscular impairments due to diabetes and neuropathy. In this study, the lower limb's muscle force distribution during gait was estimated and compared in diabetic patients with and without polyneuropathy. METHODS: Thirty individuals were evaluated in a cross-sectional study, equally divided among controls (CG) and diabetic patients with (DNG) and without (DG) polyneuropathy...
November 9, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29120984/effects-of-different-resistance-training-systems-on-muscular-strength-and-hypertrophy-in-resistance-trained-older-women
#17
Alex S Ribeiro, Andreo F Aguiar, Brad J Schoenfeld, João Pedro Nunes, Edilaine F Cavalcanti, Eduardo L Cadore, Edilson S Cyrino
The purpose of this study was to investigate the effect of resistance training (RT) performed in a pyramid (PR) versus constant (CT) load system on muscular strength and hypertrophy in resistance-trained older women. Thirty-three older women (69.7±5.9 years, 69.1±15.0 kg, 156.6±6.2 cm, and 28.1±5.4 kg.m) were randomized into 2 groups: one that performed RT with a CT load (n = 16) and another group that performed RT in an ascending PR fashion (n = 17). Outcomes included 1 repetition maximum (RM) tests and assessment of skeletal muscle mass estimated by dual energy X-ray absorptiometry...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29120981/biomechanical-methods-to-quantify-muscle-effort-during-resistance-exercise
#18
Loren Z F Chiu
Muscle hypertrophy and strength adaptations elicited by resistance training dependent on the force exerted by active muscles. As an exercise may use many muscles, determining force for individual muscles or muscle groupings is important to understand the relation between an exercise and these adaptations. Muscle effort - the amount of force or a surrogate measure related to the amount of force exerted during a task - can be quantified using biomechanical methods. The purpose of this review was to summarize the biomechanical methods used to estimate muscle effort in movements, particularly resistance training exercises...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29120980/effect-of-cold-water-immersion-on-elbow-flexors-muscle-thickness-after-resistance-training
#19
Filipe Matos, Eduardo Borba Neves, Claudio Rosa, Victor Machado Reis, Francisco Saavedra, Severiano Silva, José Vilaça-Alves
Cold Water Immersion (CWI) is commonly applied in order to speed up the recovery process after exercise. Muscle damage may induce a performance reduction, consequence of the intramuscular pressure induced by the muscular swelling. The aim of the study was to verify the CWI effects on muscle thickness (MT) behavior of the elbow flexors after a strength training protocol (ST). Eleven males were submitted to a RT, performed in two different weeks. In one of the weeks, subjects experienced a passive recovery. In the other, subjects were submitted to a CWI (20 min at 5C-10°C)...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29120304/an-examination-of-school-and-student-level-characteristics-associated-with-the-likelihood-of-students-meeting-the-canadian-physical-activity-guidelines-in-the-compass-study
#20
Amanda Harvey, Guy Faulkner, Lora Giangregorio, Scott T Leatherdale
OBJECTIVES: To examine school- and student-level correlates of physical activity. METHODS: Cross-sectional Year 2 data collected from 45 298 grade 9-12 students attending 89 secondary schools in the COMPASS study were examined using multi-level modelling to predict the likelihood of students a) achieving 60 minutes of moderate to vigorous physical activity (MVPA) daily; and b) achieving the Canadian Society for Exercise Physiology (CSEP) activity guideline for youth (60 minutes/MVPA daily, vigorous physical activity at least three days in a week, and resistance training at least three days in a week)...
November 9, 2017: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
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