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https://www.readbyqxmd.com/read/29780604/effect-of-long-term-high-altitude-exposure-on-cardiovascular-autonomic-adjustment-during-rest-and-post-exercise-recovery
#1
Prem Bhattarai, Bishnu H Paudel, Dilip Thakur, Balkrishna Bhattarai, Bijay Subedi, Rita Khadka
Background: Despite the successful adaptation to high altitude, some differences do occur due to long term exposure to the hypoxic environment. The effect of long term high altitude exposure on cardiac autonomic adjustment during basal and post-exercise recovery is less known. Thus we aimed to study the differences in basal cardiac autonomic adjustment and its response to exercise in highlanders and to compare it with lowlanders. Methods: The study was conducted on 29 healthy highlander males who were born and brought up at altitude of 3000 m and above from the sea level, their cardiac autonomic adjustment was compared with age, sex, physical activity and ethnicity-matched 29 healthy lowlanders using Heart Rate Variability (HRV) during rest and recovery from sub-maximal exercise (3 m step test)...
2018: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29777475/effects-of-resistance-training-detraining-and-retraining-on-strength-and-functional-capacity-in-elderly
#2
Raphael Luiz Sakugawa, Bruno Monteiro Moura, Lucas Bet da Rosa Orssatto, Ewertton de Souza Bezerra, Eduardo Lusa Cadore, Fernando Diefenthaeler
BACKGROUND: The interruption of training (detraining) results in loss of the gains acquired. Partial retention could occur after detraining, and variation in training stimuli may optimize retraining adaptations. AIM: To evaluate the effect of a resistance-retraining program on strength and functional capacity performance after a detraining period. METHODS: Ten elderly men and women (63-68 years) completed 12 weeks of training, 16 weeks of detraining, and 8 weeks of retraining...
May 17, 2018: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29776562/the-pattern-of-a-broken-heart-can-circulating-mirs-help-to-distinguish-cardiac-pathologies-from-normal-post-exercise-recovery
#3
EDITORIAL
Martin Bahls, Nicolle Kränkel
No abstract text is available yet for this article.
August 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29771824/psychological-and-behavioral-responses-to-interval-and-continuous-exercise
#4
Matthew J Stork, Martin J Gibala, Kathleen A Martin Ginis
PURPOSE: To compare psychological responses to, and preferences for, moderate-intensity continuous training (MICT), high-intensity interval training (HIIT), and sprint interval training (SIT) among inactive adults; and to investigate the relationships between affect, enjoyment, exercise preferences, and subsequent exercise behavior over a 4-wk follow-up period. METHODS: Thirty inactive men and women (21.23±3.81 y), inexperienced with HIIT or SIT, completed three trials of cycle ergometer exercise in random order on separate days: MICT (45min continuous; ~70-75% of heart rate maximum (HRmax)); HIIT (10x1 min bouts at ~85-90%HRmax with 1-min recovery periods); and SIT (3x20-s "all-out" sprints with 2-min recovery periods)...
May 16, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29770871/the-effects-of-acute-leucine-or-leucine-glutamine-co-ingestion-on-recovery-from-eccentrically-biased-exercise
#5
Mark Waldron, Cameron Ralph, Owen Jeffries, Jamie Tallent, Nicola Theis, Stephen David Patterson
This study investigated the effects of leucine or leucine + glutamine supplementation on recovery from eccentric exercise. In a double-blind independent groups design, 23 men were randomly assigned to a leucine (0.087 g/kg; n = 8), leucine + glutamine (0.087 g/kg + glutamine 0.3 g/kg; n = 8) or placebo (0.3 g/kg maltodextrin; n = 7) group. Participants performed 5 sets of drop jumps, with each set comprising 20 repetitions. Isometric knee-extensor strength, counter-movement jump (CMJ) height, delayed-onset muscle soreness (DOMS) and creatine kinase (CK) were measured at baseline, 1, 24, 48 h and 72 h post-exercise...
May 16, 2018: Amino Acids
https://www.readbyqxmd.com/read/29769521/thirty-loci-identified-for-heart-rate-response-to-exercise-and-recovery-implicate-autonomic-nervous-system
#6
Julia Ramírez, Stefan van Duijvenboden, Ioanna Ntalla, Borbala Mifsud, Helen R Warren, Evan Tzanis, Michele Orini, Andrew Tinker, Pier D Lambiase, Patricia B Munroe
Impaired capacity to increase heart rate (HR) during exercise (ΔHRex ), and a reduced rate of recovery post-exercise (ΔHRrec ) are associated with higher cardiovascular mortality rates. Currently, the genetic basis of both phenotypes remains to be elucidated. We conduct genome-wide association studies (GWASs) for ΔHRex and ΔHRrec in ~40,000 individuals, followed by replication in ~27,000 independent samples, all from UK Biobank. Six and seven single-nucleotide polymorphisms for ΔHRex and ΔHRrec , respectively, formally replicate...
May 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29761414/spatially-resolved-kinetics-of-skeletal-muscle-exercise-response-and-recovery-with-multiple-echo-diffusion-tensor-imaging-mediti-a-feasibility-study
#7
E E Sigmund, S H Baete, K Patel, D Wang, D Stoffel, R Otazo, P Parasoglou, J Bencardino
OBJECTIVES: We describe measurement of skeletal muscle kinetics with multiple echo diffusion tensor imaging (MEDITI). This approach allows characterization of the microstructural dynamics in healthy and pathologic muscle. MATERIALS AND METHODS: In a Siemens 3-T Skyra scanner, MEDITI was used to collect dynamic DTI with a combination of rapid diffusion encoding, radial imaging, and compressed sensing reconstruction in a multi-compartment agarose gel rotation phantom and within in vivo calf muscle...
May 14, 2018: Magma
https://www.readbyqxmd.com/read/29761312/recovery-of-upper-body-muscle-power-after-short-intensive-exercise-comparing-boys-and-men
#8
Yitzhak Weinstein, Omri Inbar, Ron Mor-Unikovski, Anthony Luder, Gal Dubnov-Raz
PURPOSE: Boys' lower-body muscle power generation (PO) recovers faster than men's following intensive exercise. The purpose of this study was to examine whether boys differ from adult men in recovering from upper-body muscle power generation following intensive exercise. METHODS: Fifteen prepubertal boys (M ± SD age 10.6 ± 1.0 years) and 13 men (31.1 ± 5.0 years) performed two upper-body Wingate Anaerobic Tests (WAnT), separated by either 2-min or 10-min recovery intervals...
May 14, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29758055/active-recovery-affects-the-recovery-of-the-corticospinal-system-but-not-of-muscle-contractile-properties
#9
Louis-Solal Giboin, Ehsan Amiri, Raphael Bertschinger, Markus Gruber
PURPOSE: Active recovery is often used by athletes after strenuous exercise or competition but its underlying mechanisms are not well understood. We hypothesized that active recovery speeds-up recovery processes within the muscle and the central nervous system (CNS). METHODS: We assessed muscular and CNS recovery by measuring the voluntary activation (VA) in the vastus lateralis muscle with transcranial magnetic stimulation (VATMS) and peripheral nerve stimulation (VAPNS) during maximal voluntary contractions (MVC) of the knee extensors in 11 subjects...
2018: PloS One
https://www.readbyqxmd.com/read/29757056/whey-protein-augments-leucinemia-and-post-exercise-p70s6k1-activity-compared-to-a-hydrolysed-collagen-blend-when-in-recovery-from-training-with-low-carbohydrate-availability
#10
Samuel G Impey, Kelly M Hammond, Robert Naughton, Carl Langan-Evans, Sam O Shepherd, Adam P Sharples, Jessica Cegielski, Kenneth Smith, Stewart Jeromson, D Lee Hamilton, Graeme L Close, James P Morton
We examined the effects of whey versus collagen protein on skeletal muscle cell signalling responses associated with mitochondrial biogenesis and protein synthesis in recovery from an acute training session completed with low carbohydrate (CHO) availability. In a repeated measures design (after adhering to a 36-h exercise-dietary intervention to standardise pre-exercise muscle glycogen), eight males completed a 75-min non-exhaustive cycling protocol and consumed 22 g of a hydrolysed collagen blend (COLLAGEN) or whey (WHEY) protein 45 min prior to exercise, 22 g during exercise and 22 g immediately post-exercise...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29757055/urine-specific-gravity-as-a-practical-marker-for-identifying-sub-optimal-fluid-intake-of-runners-12-h-post-exercise
#11
Eric Kyle O'Neal, Samantha Louise Johnson, Brett Alan Davis, Veronika Pribyslavska, Mary Caitlin Stevenson-Wilcoxson
The legitimacy of urine specific gravity (USG) as a standalone measure to detect hydration status has recently been challenged. As an alternative to hydration status, the purpose of this study was to determine the diagnostic capability of using the traditional USG marker of >1.020 to detect insufficient recovery fluid consumption with consideration for moderate versus high sweat losses (2.00-2.99 or > 3% body mass respectively). Adequate recovery fluid intake (ARFI) was operationally defined as ≥100% beverage fluid intake plus food water from 1 or 2 meals and a snack...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29755363/an-evidence-based-approach-for-choosing-post-exercise-recovery-techniques-to-reduce-markers-of-muscle-damage-soreness-fatigue-and-inflammation-a-systematic-review-with-meta-analysis
#12
Olivier Dupuy, Wafa Douzi, Dimitri Theurot, Laurent Bosquet, Benoit Dugué
Introduction: The aim of the present work was to perform a meta-analysis evaluating the impact of recovery techniques on delayed onset muscle soreness (DOMS), perceived fatigue, muscle damage, and inflammatory markers after physical exercise. Method: Three databases including PubMed, Embase , and Web-of-Science were searched using the following terms: ("recovery" or "active recovery" or "cooling" or "massage" or "compression garment" or "electrostimulation" or "stretching" or "immersion" or "cryotherapy") and ("DOMS" or "perceived fatigue" or "CK" or "CRP" or "IL-6") and ("after exercise" or "post-exercise") for randomized controlled trials, crossover trials, and repeated-measure studies...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29748911/patient-education-and-rehabilitation-after-hip-arthroplasty-in-an-italian-spa-center-a-pilot-study-on-its-feasibility
#13
Alfredo Musumeci, Giulia Pranovi, Stefano Masiero
Nowadays, some spa centers are suitable for providing rehabilitative and preventive treatment in association with traditional spa therapy. This study aims to evaluate the feasibility and the effectiveness of an intensive rehabilitation program after hip arthroplasty in an Italian spa center. Early after total hip arthroplasty for severe osteoarthritis (≤ 10 days after the intervention), 12 consecutive patients (5 males and 7 females) aged between 50 and 85 years were enrolled for this study. All the patients performed a 2-week thermal multimodal rehabilitation program, which consisted of education and physical rehabilitative measures...
May 11, 2018: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29747089/effects-of-high-intensity-interval-training-on-optic-nerve-head-and-macular-perfusion-using-optical-coherence-tomography-angiography-in-healthy-adults
#14
Boris Schmitz, Pieter Nelis, Florian Rolfes, Maged Alnawaiseh, Andreas Klose, Michael Krüger, Nicole Eter, Stefan-Martin Brand, Florian Alten
BACKGROUND AND AIMS: High-intensity interval training (HIIT) has been identified to be efficient for increasing health-related fitness in general and in lifestyle-induced chronic diseases such as hypertension, obesity and metabolic syndrome. This study aimed to evaluate HIIT effects on optic nerve head (ONH) and macular perfusion in healthy adults using optical coherence tomography angiography (OCTA). METHODS: Fifty-eight healthy participants (22.0 ± 2.02 years, 40 females (69...
April 26, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29746792/the-modulation-of-corticospinal-excitability-and-inhibition-following-acute-resistance-exercise-in-males-and-females
#15
Christopher Latella, Ashlee Hendy, Dan Vanderwesthuizen, Wei-Peng Teo
OBJECTIVE: The acute responses to resistance training (RT) between males and females are poorly understood, especially from a neural perspective. Therefore, we aimed to compare the corticospinal and intracortical responses during fatigue and recovery following RT. METHODS: Twenty-two participants (12M, 10F) completed one-session of RT (3 × 12 repetition maximum) unilateral leg extensions with 60 s recovery. Single- and paired-pulse transcranial magnetic stimulation measured changes in the motor-evoked potential (MEP), corticospinal silent period (CSP), CSP/MEP ratio, and intracortical facilitation/inhibition (ICF, SICI)...
May 10, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29746382/warm-up-optimizes-postural-control-but-requires-some-minutes-of-recovery
#16
Thierry Paillard, Mohamed Abdelhafid Kadri, Merbouha Boulahbel Nouar, Frederic Noé
Paillard, T, Kadri, MA, Nouar, MB, and Noé, F. Warm-up optimizes postural control but requires some minutes of recovery. J Strength Cond Res XX(X): 000-000, 2018-The aim was to compare monopedal postural control between the dominant leg (D-Leg) and the nondominant leg (ND-Leg) in pre- and post-warm-up conditions. Thirty healthy male sports science students were evaluated before and after a warm-up exercise (12 minutes of pedaling with an incremental effort on a cycle ergometer with a controlled workload). Monopodal postural control was assessed for the D- and ND-Legs before and immediately, 2, 5, 10, and 15 minutes after the warm-up exercise, using a force platform and calculating the displacement velocity of the center of foot pressure on the mediolateral (COPML velocity) and anteroposterior (COPAP velocity) axes...
May 2, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29745804/protection-against-severe-hypokalemia-but-impaired-cardiac-repolarization-after-intense-rowing-exercise-in-healthy-humans-receiving-salbutamol
#17
Tania Atanasovska, Robert Smith, Claus Graff, Cao Thach Tran, Jacob Melgaard, Jørgen K Kanters, Aaron C Petersen, Antony Tobin, Keld P Kjeldsen, Michael John McKenna
Intense exercise induces pronounced hyperkalemia, followed by transient hypokalemia in recovery. We investigated whether the β2 -agonist salbutamol attenuated the exercise-hyperkalemia, and exacerbated the post-exercise hypokalemia, and whether hypokalemia was associated with impaired cardiac repolarization (QT hysteresis). Eleven healthy adults participated in a randomized, counterbalanced, double-blind trial receiving either 1000 µg salbutamol (SAL) or placebo (PLAC) by inhalation. Arterial plasma potassium concentration ([K+ ]a ) was measured at rest, during 3 min intense rowing exercise and 60 min recovery...
May 10, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29742538/chronotropic-incompetence-and-reduced-heart-rate-recovery-in-rheumatoid-arthritis
#18
Tiago Peçanha, Reynaldo Rodrigues, Ana Jéssica Pinto, Ana Lúcia Sá-Pinto, Lissiane Guedes, Karina Bonfiglioli, Bruno Gualano, Hamilton Roschel
BACKGROUND/OBJECTIVE: Recent studies have indicated that cardiac autonomic dysfunction is an early sign of cardiovascular impairment in rheumatoid arthritis (RA). Previous studies have mainly focused on resting assessments; however, analysis of heart rate (HR) responses to exercise might provide additional information on cardiac autonomic dysfunction in this disease. Thus, we aimed to assess the HR responses during and after a maximal graded exercise test in patients with RA and healthy controls (CONs)...
May 4, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29740332/metabolic-and-fatigue-profiles-are-comparable-between-prepubertal-children-and-well-trained-adult-endurance-athletes
#19
Anthony Birat, Pierre Bourdier, Enzo Piponnier, Anthony J Blazevich, Hugo Maciejewski, Pascale Duché, Sébastien Ratel
The aim of this study was to determine whether prepubertal children are metabolically comparable to well-trained adult endurance athletes and if this translates into similar fatigue rates during high-intensity exercise in both populations. On two different occasions, 12 prepubertal boys (10.5 ± 1.1 y), 12 untrained men (21.2 ± 1.5 y), and 13 endurance male athletes (21.5 ± 2.7 y) completed an incremental test to determine the power output at VO2max (PVO2max ) and a Wingate test to evaluate the maximal anaerobic power (Pmax ) and relative decrement in power output (i...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29726077/brachial-artery-endothelial-function-is-unchanged-after-acute-sprint-interval-exercise-in-sedentary-men-and-women
#20
Ninette Shenouda, Lauren E Skelly, Martin J Gibala, Maureen J MacDonald
NEW FINDINGS: What is the central question of this study? What is the acute brachial artery endothelial function response to sprint interval exercise and are there sex-based differences? What is the main finding and its importance? Brachial artery endothelial function did not change in either men or women following an acute session of SIT consisting of 3 × 20-s 'all-out' cycling sprints. Our findings suggest this low-volume protocol may not be sufficient to induce functional changes in the brachial artery of sedentary, but otherwise healthy adults...
May 3, 2018: Experimental Physiology
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