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https://www.readbyqxmd.com/read/28448687/postexercise-blood-flow-restriction-does-not-enhance-muscle-hypertrophy-induced-by-multiple-set-high-load-resistance-exercise
#1
Haruhiko Madarame, Satoshi Nakada, Takahisa Ohta, Naokata Ishii
To test the applicability of postexercise blood flow restriction (PEBFR) in practical training programmes, we investigated whether PEBFR enhances muscle hypertrophy induced by multiple-set high-load resistance exercise (RE). Seven men completed an eight-week RE programme for knee extensor muscles. Employing a within-subject design, one leg was subjected to RE + PEBFR, whereas contralateral leg to RE only. On each exercise session, participants performed three sets of unilateral knee extension exercise at approximately 70% of their one-repetition maximum for RE leg first, and then performed three sets for RE + PEBFR leg...
April 27, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28447186/comparison-of-the-recovery-response-from-high-intensity-and-high-volume-resistance-exercise-in-trained-men
#2
Sandro Bartolomei, Eliahu Sadres, David D Church, Eliott Arroyo, Joseph A Gordon Iii, Alyssa N Varanoske, Ran Wang, Kyle S Beyer, Leonardo P Oliveira, Jeffrey R Stout, Jay R Hoffman
PURPOSE: The purpose of this study was to compare the physiological responses of a high-volume (HV; 8 sets of 10 repetitions) versus high-intensity (HI; 8 sets of 3 repetitions) exercise protocol in resistance-trained men. METHODS: Twelve men (24.5 ± 4.2 years; 82.3 ± 8.4 kg; 175.2 ± 5.5 cm) with 6.3 ± 3.4 years of resistance training experience performed each protocol in a counterbalanced, randomized order. Performance [counter movement jump peak power (CMJP), isokinetic (ISOK) and isometric leg extension (MVIC), isometric mid-thigh pull (IMTP), and isometric squat (ISQ)] and muscle morphological [cross-sectional area (CSA) of vastus lateralis] assessments were performed at baseline (BL), 30-min (P-30 min), 24-h (P-24 h), 48-h (P-48 h), and 72-h (P-72 h) post-exercise for each testing session...
April 26, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28445110/normobaric-hypoxia-increases-the-growth-hormone-response-to-maximal-resistance-exercise-in-trained-men
#3
Dean Filopoulos, Stuart J Cormack, Douglas G Whyte
This study examined the effect of hypoxia on growth hormone (GH) release during an acute bout of high-intensity, low-volume resistance exercise. Using a single-blinded, randomised crossover design, 16 resistance-trained males completed two resistance exercise sessions in normobaric hypoxia (HYP; inspiratory oxygen fraction, (FiO2) 0.12, arterial oxygen saturation (SpO2) 82 ± 2%) and normoxia (NOR; FiO2 0.21, SpO2 98 ± 0%). Each session consisted of five sets of three repetitions of 45° leg press and bench press at 85% of one repetition maximum...
April 26, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28444094/jumping-in-aquatic-environment-after-sciatic-nerve-compression-nociceptive-evaluation-and-morphological-characteristics-of-the-soleus-muscle-of-wistar-rats
#4
Jéssica Aline Malanotte, Camila Mayumi Martin Kakihata, Jhenifer Karvat, Rose Meire Costa Brancalhão, Lucinéia de Fátima Chasko Ribeiro, Gladson Ricardo Flor Bertolini
Objective: To evaluate the effect of jumping in aquatic environment on nociception and in the soleus muscle of trained and not trained Wistar rats, in the treatment of compressive neuropathy of the sciatic nerve. Methods: Twenty-five Wistar rats were distributed into five groups: Control, Lesion, Trained + Lesion, Lesion + Exercise, and Trained + Lesion + Exercise. The training was jumping exercise in water environment for 20 days prior to injury, and treatment after the injury...
January 2017: Einstein
https://www.readbyqxmd.com/read/28443029/superior-effects-of-eccentric-to-concentric-knee-extensor-resistance-training-on-physical-fitness-insulin-sensitivity-and-lipid-profiles-of-elderly-men
#5
Trevor Chung-Ching Chen, Wei-Chin Tseng, Guan-Ling Huang, Hsin-Lian Chen, Kuo-Wei Tseng, Kazunori Nosaka
It has been reported that eccentric training of knee extensors is effective for improving blood insulin sensitivity and lipid profiles to a greater extent than concentric training in young women. However, it is not known whether this is also the case for elderly individuals. Thus, the present study tested the hypothesis that eccentric training of the knee extensors would improve physical function and health parameters (e.g., blood lipid profiles) of older adults better than concentric training. Healthy elderly men (60-76 years) were assigned to either eccentric training or concentric training group (n = 13/group), and performed 30-60 eccentric or concentric contractions of knee extensors once a week...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28442274/sex-differences-in-exercise-efficacy-to-improve-cognition-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials-in-older-humans
#6
REVIEW
Cindy K Barha, Jennifer C Davis, Ryan S Falck, Lindsay S Nagamatsu, Teresa Liu-Ambrose
Exercise is a non-pharmacological strategy to mitigate the deleterious effects of aging on brain health. However, a large amount of variation exists in its efficacy. Sex of participants and exercise type are two possible factors contributing to this variation. To better understand this, we conducted a concurrent systematic review and meta-analysis of cognitively healthy older adults. Executive functions, episodic memory, visuospatial function, word fluency, processing speed and global cognitive function were examined for exercise- and sex-dependent effects...
April 22, 2017: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/28441958/metformin-to-augment-strength-training-effective-response-in-seniors-masters-study-protocol-for-a-randomized-controlled-trial
#7
Doug E Long, Bailey D Peck, Jenny L Martz, S Craig Tuggle, Heather M Bush, Gerald McGwin, Philip A Kern, Marcas M Bamman, Charlotte A Peterson
BACKGROUND: Muscle mass and strength are strong determinants of a person's quality of life and functional independence with advancing age. While resistance training is the most effective intervention to combat age-associated muscle atrophy (sarcopenia), the ability of older adults to increase muscle mass and strength in response to training is blunted and highly variable. Thus, finding novel ways to complement resistance training to improve muscle response and ultimately quality of life among older individuals is critical...
April 26, 2017: Trials
https://www.readbyqxmd.com/read/28441442/the-effects-of-a-resistance-vs-an-aerobic-single-session-on-attention-and-executive-functioning-in-adults
#8
Ayelet Dunsky, Mona Abu-Rukun, Sharon Tsuk, Tzvi Dwolatzky, Rafi Carasso, Yael Netz
Evidence from recent studies showed that acute aerobic exercise results in improvements in different cognitive functions. The goal of this study was to assess the influence of acute bouts of aerobic versus resistance exercise on attention and executive function in adults. Thirty-nine physically active adults (age = 52±8 yr) served as participants. Each participant visited the laboratory four times: on the first visit participants performed a cognitive test (NeuroTrax) followed by an aerobic fitness assessment, as well as maximal strength test composed of six exercises...
2017: PloS One
https://www.readbyqxmd.com/read/28438770/exercise-interventions-for-cognitive-function-in-adults-older-than-50-a-systematic-review-with-meta-analysis
#9
REVIEW
Joseph Michael Northey, Nicolas Cherbuin, Kate Louise Pumpa, Disa Jane Smee, Ben Rattray
BACKGROUND: Physical exercise is seen as a promising intervention to prevent or delay cognitive decline in individuals aged 50 years and older, yet the evidence from reviews is not conclusive. OBJECTIVES: To determine if physical exercise is effective in improving cognitive function in this population. DESIGN: Systematic review with multilevel meta-analysis. DATA SOURCES: Electronic databases Medline (PubMed), EMBASE (Scopus), PsychINFO and CENTRAL (Cochrane) from inception to November 2016...
April 24, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28434152/compression-garments-and-recovery-from-exercise-a-meta-analysis
#10
REVIEW
Freddy Brown, Conor Gissane, Glyn Howatson, Ken van Someren, Charles Pedlar, Jessica Hill
BACKGROUND: Adequate recovery from exercise is essential to maintain performance throughout training and competition. While compression garments (CG) have been demonstrated to accelerate recovery, the literature is clouded by conflicting results and uncertainty over the optimal conditions of use. OBJECTIVES: A meta-analysis was conducted to assess the effects of CG on the recovery of strength, power and endurance performance following an initial bout of resistance, running, or non-load-bearing endurance (metabolic) exercise...
April 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28433473/sex-difference-in-the-heat-shock-response-to-high-external-load-resistance-training-in-older-humans
#11
Rose Njemini, Louis Nuvagah Forti, Tony Mets, Evelien Van Roie, Walter Coudyzer, Ingo Beyer, Christophe Delecluse, Ivan Bautmans
BACKGROUND: Literature reports on the effects of resistance training on heat shock protein70 (Hsp70) adaptation in older subjects are scarce. Moreover, the optimum training load required to obtain a beneficial adaptation profile is lacking. Therefore, the aim of this study was to determine the effects of resistance training at various external loads on extracellular Hsp70 (eHsp70) resting levels in older humans. METHODS: Fifty-six community-dwelling older (68±5years) volunteers were randomized to 12weeks of resistance training (3×/week) at either high-resistance (HIGH, 8 males, 10 females, 2×10-15 repetitions at 80%1RM), low resistance (LOW, 9 Males, 10 Females, 1×80-100 repetitions at 20%1RM), or mixed low resistance (LOW+, 9 Males, 10 Females, 1×60 repetitions at 20%1RM followed by 1×10-20 repetitions at 40%1RM)...
April 19, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28432739/effect-of-a-4-week-elastic-resistance-band-training-regimen-on-back-kinematics-in-horses-trotting-in-hand-and-on-the-lunge
#12
T Pfau, V Simons, N Rombach, N Stubbs, R Weller
REASONS FOR PERFORMING STUDY: Training and rehabilitation techniques aiming at improving core muscle strength may result in increased dynamic stability of the equine vertebral column. A system of elastic resistance bands is suggested to provide proprioceptive feedback during motion to encourage recruitment of core abdominal and hindquarter musculature for improved dynamic stability. OBJECTIVES: To quantify the effects of a specific resistance band system on back kinematics during trot in-hand and during lungeing at beginning and end of a 4-week exercise programme...
April 22, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28431408/the-effects-of-exercise-modality-during-additional-high-intensity-interval-training-upon-aerobic-fitness-and-strength-in-powerlifting-and-strongman-athletes
#13
Patroklos Androulakis-Korakakis, Louis Langdown, Adam Lewis, James Fisher, Paulo Gentil, Antonio Paoli, James Steele
Powerlifters and strongman athletes have a necessity for optimal levels of muscular strength whilst maintaining sufficient aerobic capacity to perform and recover between events. HIIT has been popularized for its efficacy in improving both aerobic fitness and strength but never assessed within the aforementioned population group. The present study looked to compare the effect of exercise modality, e.g. a traditional aerobic mode (AM), and strength mode, (SM), during HIIT upon aerobic fitness and strength. Sixteen well resistance trained male participants, currently competing in powerlifting and strongman events, completed 8 weeks of approximately effort- and volume-matched HIIT in 2 groups: AM (cycling, n=8) and SM (resistance training, n=8)...
April 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426515/can-transcranial-direct-current-stimulation-improve-muscle-power-in-individuals-with-advanced-resistance-training-experience
#14
Eduardo Lattari, Carlos Campos, Murilo Khede Lamego, Sandro Legey Passos de Souza, Geraldo M Neto, Nuno B Rocha, Aldair José de Oliveira, Sandro Carpenter, Sérgio Machado
The aim of this study was to investigate the effects of transcranial direct current stimulation (tDCS) on countermovement jump performance (CMJ) in men with advanced strength training experience. Ten healthy male subjects, with advanced strength training and squatting exercise experience, were included. Participants took part in an initial visit to the laboratory to complete anthropometric measurements and CMJ kinematic test-retest reliability. Participants then completed three experimental conditions, 48-72 hours apart, in a randomized, double-blinded crossover design: anodal, cathodal and sham tDCS (2 mA for 20 minutes targeting the motor cortex bilaterally)...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28425939/fructose-consumption-in-the-development-of-obesity-and-the-effects-of-different-protocols-of-physical-exercise-on-the-hepatic-metabolism
#15
REVIEW
Rodrigo Martins Pereira, José Diego Botezelli, Kellen Cristina da Cruz Rodrigues, Rania A Mekary, Dennys Esper Cintra, José Rodrigo Pauli, Adelino Sanchez Ramos da Silva, Eduardo Rochete Ropelle, Leandro Pereira de Moura
Fructose consumption has been growing exponentially and, concomitant with this, the increase in the incidence of obesity and associated complications has followed the same behavior. Studies indicate that fructose may be a carbohydrate with greater obesogenic potential than other sugars. In this context, the liver seems to be a key organ for understanding the deleterious health effects promoted by fructose consumption. Fructose promotes complications in glucose metabolism, accumulation of triacylglycerol in the hepatocytes, and alterations in the lipid profile, which, associated with an inflammatory response and alterations in the redox state, will imply a systemic picture of insulin resistance...
April 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28424870/high-intensity-interval-training-does-not-impair-strength-gains-in-response-to-resistance-training-in-premenopausal-women
#16
Paulo Gentil, Claudio Andre Barbosa de Lira, Suedi Gonçalves Cardoso Filho, Cauê Vazquez La Scala Teixeira, James Steele, James Fisher, Juliana Alves Carneiro, Mário Hebling Campos
PURPOSE: To compare the increases in upper- and lower-body muscle strength in premenopausal women performing resistance training (RT) alone or alongside concurrent high-intensity interval training (CT). METHODS: Sixteen women (26-40 years) were randomly assigned into two groups that performed either RT or CT. Both groups performed the same RT program; however, CT performed additional high-intensity interval training (HIIT) on a bicycle ergometer before RT. The study lasted 8 weeks and the participants were tested for ten repetition maximum (10RM) load in elbow flexion (barbell biceps curl) and knee extension exercises pre- and post-intervention...
April 19, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28424510/the-effect-of-slow-loaded-breathing-training-on-the-blood-pressure-response-to-handgrip-exercise-in-patients-with-isolated-systolic-hypertension
#17
Chulee Ubolsakka-Jones, Benjarat Sangthong, Wilaiwan Khrisanapant, David A Jones
Isolated systolic hypertension (ISH) is the most common form of hypertension in older people. It is characterized by increased resting systolic blood pressure (sBP) and increased sBP in response to exercise. It has previously been shown that slow breathing training reduces resting sBP, and the objective of the present study was to determine whether it also reduced the blood pressure response to static handgrip exercise. ISH patients aged between 60 and 74 years were randomly divided into a control group (10 subjects, 4 of which were male) that breathed normally and a trained group (10 subjects, 4 of which were male) that trained daily for 8 weeks by slow breathing against an inspiratory resistance of 18 cmH2O...
April 20, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28422532/effects-of-post-exercise-protein-intake-on-muscle-mass-and-strength-during-resistance-training-is-there-an-optimal-ratio-between-fast-and-slow-proteins
#18
Marina Fabre, Christophe Hausswirth, Eve Tiollier, Odeline Molle, Julien Louis, Alexandre Durguerian, Nathalie Neuveux, Xavier Bigard
While effects of the two classes of proteins found in milk (i.e. soluble proteins, including whey, and casein) on muscle protein synthesis have been well investigated after a single bout of resistance exercise (RE), the combined effects of these two proteins on the muscle responses to resistance training (RT) have not yet been investigated. Therefore, the aim of this study was to examine the effects of protein supplementation varying by the ratio between milk soluble proteins (fast-digested protein) and casein (slow-digested protein) on the muscle to a 9-week RT program...
April 19, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28420905/effects-of-supervised-aerobic-training-on-the-levels-of-anti-mullerian-hormone-and-adiposity-measures-in-women-with-normo-ovulatory-and-polycystic-ovary-syndrome
#19
Einas Al-Eisa, Sami Ali Gabr, Ahmad Hieder Alghadir
OBJECTIVE: To evaluate the change in the levels of anti-Mullerian hormone, adiponectin, weight loss and fertility parameters in obese women with or without polycystic ovary syndrome, following 12 weeks of supervised aerobic exercise. METHODS: This study was conducted from August 2013 to October 2014 among obese women with or without polycystic ovary syndrome referred to Obstetrics and Gynecology clinic, Mansoura University Hospital, Faculty of Medicine, Mansoura, Egypt...
April 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28417093/instability-resistance-training-for-health-and-performance
#20
REVIEW
Erika Zemková
Recently, resistance exercises performed on an unstable surface have become part of athletic training and rehabilitation. Accordingly, their role in performance and health-oriented strength training has increasingly emerged as a matter of interest to researchers and conditioning specialists. A more pronounced activation of stabilizing muscles is assumed to be the main feature of instability resistance exercises. This assumption has been proven by EMG studies, which have highlighted significantly greater electromyographic activity of trunk-stabilizing muscles during exercises under unstable as compared to stable conditions...
April 2017: Journal of Traditional and Complementary Medicine
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