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https://www.readbyqxmd.com/read/28208990/swiss-ball-versus-mat-exercises-for-core-activation-of-transverse-abdominis-in-recreational-athletes
#1
Prateek Srivastav, Nirmala Nayak, Sudeep Nair, Lobsang Bhuti Sherpa, Diana Dsouza
INTRODUCTION: Core stability is an essential component for improving athletic performance and injury prevention. Exercises on a Swiss ball and on the mat are two different ways of improving core stability. Comparison of these methods can help physiotherapists incorporate the better method for athletic training and rehabilitation. AIM: To compare swiss ball and mat exercises for core stability of transverse abdominis in recreational athletes. MATERIALS AND METHODS: This pilot randomized control trial was performed on a total of 25 recreational athletes...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28195973/repetition-performance-and-blood-lactate-responses-adopting-different-recovery-periods-between-training-sessions-in-trained-men
#2
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/28195970/reduction-of-physiological-strain-under-a-hot-and-humid-environment-by-a-hybrid-cooling-vest
#3
Albert P C Chan, Y Yang, Francis K W Wong, Michael C H Yam, Del P Wong, W F Song
Cooling treatment is regarded as one of good practices to provide safe training conditions to athletic trainers in the hot environment. The present study aimed to investigate whether wearing a commercial lightweight and portable hybrid cooling vest that combines air ventilation fans with frozen gel packs was an effective means to reduce participants' body heat strain. In this within-subject repeated measures study, 10 male volunteers participated in two heat-stress trials (one with the cooling vest - COOL condition, and another without - CON condition, in a randomized order) inside a climatic chamber with a controlled ambient temperature 33 °C and relative humidity (RH) 75% on an experimental day...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28183441/similar-metabolic-response-to-lower-versus-upper-body-interval-exercise-or-endurance-exercise
#4
Monique E Francois, Matthew J Graham, Evelyn B Parr, Nancy J Rehrer, Samuel J E Lucas, Stasinos Stavrianeas, James D Cotter
PURPOSE: To compare energy use and substrate partitioning arising from repeated lower- versus upper-body sprints, or endurance exercise, across a 24-h period. METHODS: Twelve untrained males (24±4 y) completed three trials in randomized order: (1) repeated sprints (five 30-s Wingate, 4.5-min recovery) on a cycle ergometer (SITLegs); (2) 50-min continuous cycling at 65% V̇O2max (END); (3) repeated sprints on an arm-crank ergometer (SITArms). Respiratory gas exchange was assessed before and during exercise, and at eight points across 22h of recovery...
March 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28179228/dietary-nitrate-does-not-reduce-oxygen-cost-of-exercise-or-improve-muscle-mitochondrial-function-in-mitochondrial-myopathy-patients
#5
Miranda Nabben, Joep P J Schmitz, Jolita Ciapaite, Carlijn M P Le Clercq, Natal A van Riel, Harm R Haak, Klaas Nicolay, Irenaeus F de Coo, Hubert J M Smeets, Stephan F Praet, Luc J C van Loon, Jeanine J Prompers
Muscle weakness and exercise intolerance negatively affect the quality of life of mitochondrial myopathy patients. Short-term dietary nitrate supplementation has been shown to improve exercise performance and reduce oxygen cost of exercise in healthy humans and trained athletes. We investigated if 1 week of dietary inorganic nitrate supplementation decreases the oxygen cost of exercise and improves mitochondrial function in mitochondrial myopathy patients. Ten mitochondrial myopathy patients (40 ± 5 years, maximal whole-body oxygen uptake = 21...
February 8, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28177741/modified-sprint-interval-training-protocols-part-ii-psychological-responses
#6
Logan K Townsend, Hashim Islam, Emily Dunn, Mark Eys, Jennifer Robertson-Wilson, Tom J Hazell
Sprint-interval training (SIT) is a viable method to improve health and fitness. However, researchers have questioned the utility of SIT due to its strenuous nature. The current study aimed to determine if manipulating the sprint and recovery duration, while maintaining the 1:8 work to rest ratio, could uncover a more favourable SIT protocol. Nine healthy active males (23.3±3.0 y, 22.4±2.2 kg·m<sup>-2</sup>, 48.9±5.3 mLkg<sup>-1</sup>min<sup>-1</sup>) participated in three experimental running SIT sessions: (1) 30:240 (4 x 30 sec efforts, 240 sec recovery); (2) 15:120 (8 x 15 sec efforts, 120 sec recovery); (3) 5:40 (24 x 5 sec efforts, 40 sec recovery); and (4) a final behavioural choice follow-up session...
December 7, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177740/modified-sprint-interval-training-protocols-part-i-physiological-responses
#7
Hashim Islam, Logan K Townsend, Tom J Hazell
Adaptations to sprint interval training (SIT) are observed with brief (≤15s) work bouts highlighting peak power generation as an important metabolic stimulus. This study examined the effects of manipulating SIT work bout and recovery period duration on energy expenditure (EE) during and post-exercise, as well as post-exercise fat oxidation rates. Nine active males completed a resting control session (CTRL) and three SIT sessions in randomized order: 1) 30:240 (4 x 30 s bouts, 240 s recovery); 2) 15:120 (8 x 15 s bouts, 120 s recovery); 3) 5:40 (24 x 5 s bouts, 40 s recovery)...
December 8, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177737/peak-oxygen-uptake-in-a-sprint-interval-testing-protocol-vs-maximal-oxygen-uptake-in-an-incremental-testing-protocol-and-their-relationship-with-cross-country-mountain-biking-performance
#8
Rafał Hebisz, Paulina Hebisz, Marek Zatoń, Kamil Michalik
The literature finds that the exercise capacity of cyclists is typically assessed using incremental and endurance exercise tests. The aim of the present study was to confirm whether peak oxygen uptake (VO2peak) attained in a sprint interval testing protocol correlated with cycling performance and whether it corresponds to maximal oxygen uptake (VO2max) determined by an incremental testing protocol. A sample of 28 trained mountain bike cyclists executed three performance tests: a) incremental testing protocol (ITP) in which the participant cycled to volitional exhaustion, b) sprint interval testing protocol (SITP) composed of four 30-s maximal intensity cycling bouts interspersed with 90-s recovery periods, c) competition in a simulated MTB race...
December 12, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177718/the-physiological-response-to-cold-water-immersion-following-a-mixed-martial-arts-training-session
#9
Angus Lindsay, Sam Carr, Sean Cross, Carl Petersen, John G Lewis, Steven P Gieseg
Combative sport is one of the most physically intense forms of exercise, yet the effect of recovery interventions has been largely unexplored. We investigated the effect of cold water immersion on structural, inflammatory and physiological stress biomarkers following a mixed martial arts contest preparation training session in comparison to passive recovery. Semi-professional MMA competitors (n=15) were randomly assigned to a cold water immersion (15 min at 10°C) or passive recovery protocol (ambient air) completed immediately following a contest preparation training session...
January 17, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177717/a-systematic-upregulation-of-nuclear-and-mitochondrial-genes-is-not-present-in-the-initial-post-exercise-recovery-period-in-human-skeletal-muscle
#10
Trisha D Scribbans, Brittany A Edgett, Jacob T Bonafiglia, Brittany L Baechler, Joe Quadrilatero, Brendon J Gurd
The purpose of the current investigation was to determine if an exercise-mediated upregulation of nuclear and mitochondrial-encoded genes targeted by the transcriptional co-activator peroxisome-proliferator-activated receptor gamma co-activator-1 alpha (PGC-1α) occurs in a systematic manner following different exercise intensities in humans. Ten recreationally active males (Age: 23 ±3 yrs; VO2peak: 41.8 ±6.6 mL/kg/min) completed two acute bouts of work-matched interval exercise at ~73% (LO) and ~100% (HI) of work rate at VO2peak in a randomized cross-over design...
January 17, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177706/the-effects-of-acute-branched-chain-amino-acid-supplementation-on-recovery-from-a-single-bout-of-hypertrophy-exercise-in-resistance-trained-athletes
#11
Mark Waldron, Kieran Whelan, Owen Jeffries, Dean Burt, Louis Howe, Stephen David Patterson
This study investigated the effects of acute branched-chain amino acid (BCAA) supplementation on recovery from exercise-induced muscle damage, among experienced resistance-trained athletes. In a double-blind matched-pairs design, 16 resistance-trained participants, routinely performing hypertrophy training, were randomly assigned to a BCAA (n = 8) or placebo (n = 8) group. The BCAAs were administered at a dosage of 0.087 g/kg body mass, with a 2:1:1 ratio of leucine, isoleucine and valine. The participants performed 6 sets of 10 full-squats at 70 % 1RM to induce muscle damage...
January 27, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28168554/effectiveness-of-using-wearable-vibration-therapy-to-alleviate-muscle-soreness
#12
Darryl J Cochrane
PURPOSE: To examine the acute and short-term effect of a wearable vibration device following strenuous eccentric exercise of the elbow flexors. METHODS: Physically active males (n = 13) performed vibration therapy (VT) and control following eccentric exercise. The arms were randomised and counterbalanced, separated by 14 days. 15 min of VT (120 Hz) was applied immediately and 24, 48, and 72 h after eccentric exercise while the contralateral arm performed no VT (control)...
February 6, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28167188/the-effect-of-kinesio-taping-versus-stretching-techniques-on-muscle-soreness-and-flexibility-during-recovery-from-nordic-hamstring-exercise
#13
Tarik Ozmen, Gokce Yagmur Gunes, Hanife Dogan, Ilyas Ucar, Mark Willems
The purpose of this study was to examine the effects of static stretching, proprioceptive neuromuscular facilitation (PNF) stretching, or kinesio taping (KT) on muscle soreness and flexibility during recovery from exercise. Sixty-five females were randomly assigned to four groups: PNF stretching (n = 15), static stretching (n = 16), KT (n = 17), and control (n = 17). All participants performed nordic hamstring exercise (5 sets of 8 repetitions). In all groups, hamstring flexibility at 24 h and 48 h was not changed from baseline (p > ...
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28166118/all-extremity-exercise-training-improves-arterial-stiffness-in-older-adults
#14
Han-Kyul Kim, Chueh-Lung Hwang, Jeung-Ki Yoo, Moon-Hyon Hwang, Eileen M Handberg, John W Petersen, Wilmer W Nichols, Sofia Sofianos, Demetra D Christou
: Large elastic arteries stiffen with age which predisposes older adults to increased risk for cardiovascular disease. Aerobic exercise training is known to reduce the risk for cardiovascular disease, but the optimal exercise prescription for attenuating large elastic arterial stiffening in older adults is not known. PURPOSE: The purpose of this randomized controlled trial was to compare the effect of all-extremity high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on aortic pulse wave velocity (PWV) and carotid artery compliance in older adults...
February 4, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28165398/review-and-extension-of-co%C3%A2-based-methods-to-determine-ventilation-rates-with-application-to-school-classrooms
#15
Stuart Batterman
The ventilation rate (VR) is a key parameter affecting indoor environmental quality (IEQ) and the energy consumption of buildings. This paper reviews the use of CO₂ as a "natural" tracer gas for estimating VRs, focusing on applications in school classrooms. It provides details and guidance for the steady-state, build-up, decay and transient mass balance methods. An extension to the build-up method and an analysis of the post-exercise recovery period that can increase CO₂ generation rates are presented. Measurements in four mechanically-ventilated school buildings demonstrate the methods and highlight issues affecting their applicability...
February 4, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28161527/a-systematic-review-of-prehabilitation-programs-in-abdominal-cancer-surgery
#16
REVIEW
Yasser Hijazi, Umair Gondal, Omer Aziz
INTRODUCTION: Prehabilitation programs aim to optimise patients in order to enhance post-operative recovery. This study aims to review the composition of prehabilitation programs for patients undergoing major abdominal cancer surgery and define the outcome measures that are used to evaluate this intervention. METHODS: A systematic literature review of all comparative studies on prehabilitation versus standard care in patients undergoing abdominal cancer surgery was performed in accordance with PRISMA guidelines...
February 2, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28154977/sex-differences-in-the-response-of-total-pyy-and-glp-1-to-moderate-intensity-continuous-and-sprint-interval-cycling-exercise
#17
Tom J Hazell, Logan K Townsend, Jillian R Hallworth, Jon Doan, Jennifer L Copeland
BACKGROUND: Exercise interventions are often less effective at improving body composition for females than males, potentially due to post-exercise hormonal responses that increase energy intake in females. Recently, sprint interval training was shown to effectively reduce body fat in females despite being relatively low during exercise energy expenditure. PURPOSE: To determine whether any sex difference in total PYY, GLP-1 or perceived hunger exists following moderate-intensity continuous exercise (MICT) and sprint interval exercise (SIT) METHODS: Twenty-one active participants (11 females) participated in three sessions in a randomized crossover design: (1) MICT, 30-min cycling at 65% VO2max; (2) SIT, 6 × 30 s "all-out" sprints with 4-min recovery periods; (3) control (CTRL; no exercise)...
February 2, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28154947/autonomic-cardiovascular-modulation-in-masters-and-young-cyclists-following-high-intensity-interval-training
#18
Nattai R Borges, Peter R Reaburn, Thomas M Doering, Christos K Argus, Matthew W Driller
PURPOSE: This study aimed at examining the autonomic cardiovascular modulation in well-trained masters and young cyclists following high-intensity interval training (HIT). METHODS: Nine masters (age 55.6 ± 5.0 years) and eight young cyclists (age 25.9 ± 3.0 years) completed a HIT protocol of 6 x 30 sec at 175% of peak power output, with 4.5-min' rest between efforts. Immediately following HIT, heart rate and R-R intervals were monitored for 30-min during passive supine recovery...
February 2, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28153608/the-effect-of-intermittent-lower-limb-occlusion-on-recovery-following-exercise-induced-muscle-damage-a-randomized-controlled-trial
#19
Will Page, Rachael Swan, Stephen D Patterson
OBJECTIVES: The purpose of this investigation was to examine the effectiveness of intermittent lower limb occlusion in augmenting recovery from exercise induced muscle damage (EIMD) in physically active males. DESIGN: Randomized controlled trial, double blind. METHODS: Sixteen healthy recreationally active male participants were randomly assigned to an intermittent occlusion (OCC; n=8) or control (SHAM; n=8) group. The EIMD protocol comprised of 100 drop-jumps, from a 0...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28152083/group-qigong-for-adolescent-inpatients-with-anorexia-nervosa-incentives-and-barriers
#20
Juliette Gueguen, Marie-Aude Piot, Massimiliano Orri, Andrea Gutierre, Jocelyne Le Moan, Sylvie Berthoz, Bruno Falissard, Nathalie Godart
BACKGROUND: Qigong is a mind-body intervention focusing on interoceptive awareness that appears to be a promising approach in anorexia nervosa (AN). In 2008, as part of our multidimensional treatment program for adolescent inpatients with AN, we began a weekly qigong workshop that turned out to be popular among our adolescent patients. Moreover psychiatrists perceived clinical benefits that deserved further exploration. METHODS AND FINDINGS: A qualitative study therefore sought to obtain a deeper understanding of how young patients with severe AN experience qigong and to determine the incentives and barriers to adherence to qigong, to understanding its meaning, and to applying it in other contexts...
2017: PloS One
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