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https://www.readbyqxmd.com/read/27861911/metabolism-of-ketone-bodies-during-exercise-and-training-physiological-basis-for-exogenous-supplementation
#1
Mark Evans, Karl E Cogan, Brendan Egan
Optimising training and performance through nutrition strategies is central to supporting elite sportspeople, much of which has focussed on manipulating the relative intake of carbohydrate and fat and their contributions as fuels for energy provision. The ketone bodies, namely acetoacetate, acetone, and β-hydroxybutyrate (βHB), are produced in the liver during conditions of reduced carbohydrate availability and serve as an alternative fuel source for peripheral tissues including brain, heart and skeletal muscle...
November 10, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27846044/impact-of-exercise-intensity-and-duration-on-postexercise-executive-function
#2
Hayato Tsukamoto, Saki Takenaka, Tadashi Suga, Daichi Tanaka, Tatsuya Takeuchi, Takafumi Hamaoka, Tadao Isaka, Takeshi Hashimoto
PURPOSE: The impact of exercise volume represented by exercise intensity and duration on post-exercise executive function (EF) improvement remains unclear. In the present study, involving 2 volume-controlled evaluations, we aimed to compare acute exercise protocols with differing intensities and durations in order to establish an effective exercise protocol for improving EF. METHODS: In study 1, 12 healthy male subjects performed cycle ergometer exercise, based on a low-intensity (LI) protocol for 20 min (LI20), moderate-intensity (MI) protocol for 20 min (MI20), and MI20 volume-matched LI protocol for 40 min (LI40)...
November 11, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27834290/altered-muscle-satellite-cell-activation-following-16-weeks-of-resistance-training-in-young-men
#3
Joshua P Nederveen, Tim Snijders, Sophie Joanisse, Christopher G Wavell, Cameron J Mitchell, Leeann M Johnston, Steven K Baker, Stuart M Phillips, Gianni Parise
Skeletal muscle satellite cells (SC) play an important role in muscle adaptation. In untrained individuals, SC content and activation status has been observed to increase in response to a single bout of exercise. Muscle fiber characteristics change considerably when resistance exercise is performed chronically, but whether training status affects the activity of SC in response to a single bout of exercise remains unknown. We examined the changes in SC content and activation status following a single bout of resistance exercise, prior to and following a 16wk progressive resistance training (RT) program in fourteen young (25±3yr) men...
November 9, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27826399/contact-karate-promotes-post-exercise-hypotension-in-young-adult-males
#4
Marcelo Magalhaes Sales, Caio Victor de Sousa, Wellington Barbosa Sampaio, Carlos Ernesto, Rodrigo Alberto Vieira Browne, Jose Fernando Vila Nova de Moraes, Daisy Motta-Santos, Milton Rocha Moraes, John Eugene Lewis, Herbert Gustavo Simões, Francisco Martins da Silva
BACKGROUND: Worldwide, systemic arterial hypertension is a leading cause of death and non-communicable cardiovascular disease. A major factor contributing to this disease is a sedentary lifestyle. However, physical exercise, such as martial arts, may be an option for blood pressure (BP) control. The magnitude of post-exercise hypotension is associated with a prolonged decrease in BP in normotensive and hypertensive individuals. OBJECTIVES: The present study aimed to verify the effects of a Contact Karate (CK) session on BP responses during a post-exercise recovery period in young adults...
September 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/27780822/pre-sleep-protein-ingestion-does-not-compromise-the-muscle-protein-synthetic-response-to-protein-ingested-the-following-morning
#5
Benjamin T Wall, Nicholas A Burd, Rinske Franssen, Stefan Hm Gorissen, Tim Snijders, Joan M Senden, Annemie P Gijsen, Luc J C van Loon
: Protein ingestion before sleep augments post-exercise muscle protein synthesis during overnight recovery. PURPOSE: It is unknown whether post-exercise and pre-sleep protein consumption modulates post-prandial protein handling and myofibrillar protein synthetic responses the following morning. Sixteen healthy young (24±1 y) men performed unilateral resistance-type exercise (contralateral leg acting as a resting control) at 20:00 h. Participants ingested 20 g protein immediately after exercise plus 60 g protein pre-sleep (PRO group; n=8) or equivalent boluses of carbohydrate (CON; n=8)...
October 25, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27763877/green-tea-extract-does-not-affect-exogenous-glucose-appearance-but-reduces-insulinemia-with-glucose-ingestion-in-exercise-recovery
#6
Brian J Martin, Chris McGlory, Martin J MacInnis, Mary K Allison, Stuart M Phillips, Martin J Gibala
We reported that supplementation with green tea extract (GTE) lowered the glycemic response to an oral glucose load following exercise but via an unknown mechanism. Here we examined the effect of supplementation with GTE on plasma glucose kinetics upon ingestion of a glucose beverage during exercise recovery. Eleven healthy, sedentary men (21±2 y; BMI=23±4 kg•m(-2), VO2peak=38±7 ml•kg(-1)•min(-1); mean±SD) ingested GTE (350 mg) or placebo (PLA) thrice daily for 7-d in a double-blind, crossover design...
October 7, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27704555/the-effects-of-cold-water-immersion-and-active-recovery-on-inflammation-and-cell-stress-responses-in-human-skeletal-muscle-after-resistance-exercise
#7
Jonathan M Peake, Llion A Roberts, Vandre C Figueiredo, Ingrid Egner, Simone Krog, Sigve N Aas, Katsuhiko Suzuki, James F Markworth, Jeff S Coombes, David Cameron-Smith, Truls Raastad
KEY POINTS: Cold water immersion and active recovery are common post-exercise recovery treatments. A key assumption about the benefits of cold water immersion is that it reduces inflammation in skeletal muscle. However, no data are available from humans to support this notion. We compared the effects of cold water immersion and active recovery on inflammatory and cellular stress responses in skeletal muscle from exercise-trained men 2, 24 and 48 h during recovery after acute resistance exercise...
October 4, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27701422/differential-responses-of-post-exercise-recovery-of-leg-blood-flow-and-oxygen-uptake-kinetics-in-hfpef-versus-hfref
#8
Richard B Thompson, Joseph J Pagano, Kory W Mathewson, Ian Paterson, Jason R Dyck, Dalane W Kitzman, Mark J Haykowsky
The goals of the current study were to compare leg blood flow, oxygen extraction and oxygen uptake (VO2) after constant load sub-maximal unilateral knee extension (ULKE) exercise in patients with heart failure with reduced ejection fraction (HFrEF) compared to those with preserved ejection fraction (HFpEF). Previously, it has been shown that prolonged whole body VO2 recovery kinetics are directly related to disease severity and all-cause mortality in HFrEF patients. To date, no study has simultaneously measured muscle-specific blood flow and oxygen extraction post exercise recovery kinetics in HFrEF or HFpEF patients; therefore it is unknown if muscle VO2 recovery kinetics, and more specifically, the recovery kinetics of blood flow and oxygen extraction at the level of the muscle, differ between HF phenotypes...
2016: PloS One
https://www.readbyqxmd.com/read/27639403/effects-of-high-intensity-interval-training-on-physical-capacities-and-substrate-oxidation-rate-in-obese-adolescents
#9
S Lazzer, G Tringali, M Caccavale, R De Micheli, L Abbruzzese, A Sartorio
PURPOSE: To investigate the effects of a 3-week weight-management program entailing moderate energy restriction, nutritional education, psychological counseling and three different exercise training (a: low intensity, LI: 40 % V'O2max; b: high intensity, HI: 70 % V'O2max; c: high-intensity interval training, HIIT), on body composition, energy expenditure and fat oxidation rate in obese adolescents. METHODS: Thirty obese adolescents (age: 15-17 years, BMI: 37...
September 17, 2016: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/27638881/exercise-intensity-modulates-the-appearance-of-circulating-microvesicles-with-pro-angiogenic-potential-upon-endothelial-cells
#10
Eurico Nestor Wilhelm, José González-Alonso, Christopher Parris, Mark Rakobowchuk
The effect of endurance exercise on circulating microvesicle dynamics and their impact upon surrounding endothelial cells is unclear. Here we tested the hypothesis that exercise intensity modulates the time-course of platelet (PMV) and endothelial-derived (EMV) microvesicle appearance in the circulation through haemodynamic and biochemical-related mechanisms, and that microvesicles formed during exercise would stimulate endothelial angiogenesis in vitro. Nine healthy young men had venous blood samples taken prior, during and throughout the recovery period after 1 h of moderate (46±2% V̇O2max) or heavy (67±2% V̇O2max) intensity semi-recumbent cycling and a time matched resting control trial...
September 16, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27624781/photobiomodulation-therapy-pbmt-and-or-cryotherapy-in-skeletal-muscle-restitution-what-is-better-a-randomized-double-blinded-placebo-controlled-clinical-trial
#11
Paulo Roberto Vicente de Paiva, Shaiane Silva Tomazoni, Douglas Scott Johnson, Adriane Aver Vanin, Gianna Móes Albuquerque-Pontes, Caroline Dos Santos Monteiro Machado, Heliodora Leão Casalechi, Paulo de Tarso Camillo de Carvalho, Ernesto Cesar Pinto Leal-Junior
Cryotherapy for post-exercise recovery remains widely used despite the lack of quality evidence. Photobiomodulation therapy (PBMT) studies (with both low-level laser therapy and light-emitting diode therapy) have demonstrated positive scientific evidence to suggest its use. The study aims to evaluate PBMT and cryotherapy as a single or combined treatment on skeletal muscle recovery after eccentric contractions of knee extensors. Fifty healthy male volunteers were recruited and randomized into five groups (PBMT, cryotherapy, cryotherapy + PBMT, PMBT + cryotherapy, or placebo) for a randomized, double-blinded, placebo-controlled trial that evaluated exercise performance (maximum voluntary contraction (MVC)), delayed onset muscle soreness (DOMS), and muscle damage (creatine kinase (CK))...
December 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27624473/dynamic-dti-ddti-shows-differing-temporal-activation-patterns-in-post-exercise-skeletal-muscles
#12
Conrad Rockel, Alireza Akbari, Dinesh A Kumbhare, Michael D Noseworthy
OBJECT: To assess post-exercise recovery of human calf muscles using dynamic diffusion tensor imaging (dDTI). MATERIALS AND METHODS: DTI data (6 directions, b = 0 and 400 s/mm(2)) were acquired every 35 s from seven healthy men using a 3T MRI, prior to (4 volumes) and immediately following exercise (13 volumes, ~7.5 min). Exercise consisted of 5-min in-bore repetitive dorsiflexion-eversion foot motion with 0.78 kg resistance. Diffusion tensors calculated at each time point produced maps of mean diffusivity (MD), fractional anisotropy (FA), radial diffusivity (RD), and signal at b = 0 s/mm(2) (S0)...
September 13, 2016: Magma
https://www.readbyqxmd.com/read/27503712/the-use-of-thermal-imaging-to-assess-the-effectiveness-of-ice-massage-and-cold-water-immersion-as-methods-for-supporting-post-exercise-recovery
#13
Jakub Grzegorz Adamczyk, Ilona Krasowska, Dariusz Boguszewski, Peter Reaburn
Cold water immersion (CWI) and ice massage (IM) are commonly used treatments to prevent the delay onset of muscle soreness (DOMS); however, little is known on their relative benefits and effectiveness to lower tissue temperature. This study was designed to evaluate the effectiveness of IM and CMI on tissue temperature and potential benefit to preventing DOMS. The research encompassed 36 subjects divided into three groups of twelve depending on the form of recovery: ice massage (IM), cold-water immersion (CWI), or passive recovery (PAS)...
August 2016: Journal of Thermal Biology
https://www.readbyqxmd.com/read/27430594/dosages-of-cold-water-immersion-post-exercise-on-functional-and-clinical-responses-a-randomized-controlled-trial
#14
A F Machado, A C Almeida, J K Micheletti, F M Vanderlei, M F Tribst, J Netto Junior, C M Pastre
Cold-water immersion (CWI) is one of the recovery techniques commonly used by athletes for post-exercise recovery. Nevertheless, the effects of CWI using different temperatures and the dose-response relationship of this technique have not yet been investigated. The aims of this study were to compare the effects of two strategies of CWI, using different water temperatures with passive recovery post exercise in the management of some markers of muscle damage, and to observe whether any of the techniques used caused deleterious effects on performance...
July 19, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27362186/molecular-hydrogen-affected-post-exercise-recovery-in-judo-athletes-3820-board-259-june-4-9-30-am-11-00-am
#15
Patrik Drid, Marko Dm Stojanovic, Tatjana Trivic, Sergej M Ostojic
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27360777/post-exercise-recovery-among-hiv-and-hiv-hispanic-adults-role-of-metabolic-syndrome-and-lipodystrophy-status-1952-board-104-june-2-2-00-pm-3-30-pm
#16
Maria C Pacheco-Pares, Jorge Santana-Bagur, Michael J Joyner, Jorge Rodriguez-Zayas, Farah A Ramirez-Marrero
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27327024/postexercise-high-fat-feeding-supresses-p70s6k1-activity-in-human-skeletal-muscle
#17
Kelly M Hammond, Samuel G Impey, Kevin Currell, Nigel Mitchell, Sam O Shepherd, Stewart Jeromson, John A Hawley, Graeme L Close, D Lee Hamilton, Adam P Sharples, James P Morton
PURPOSE: To examine the effects of reduced CHO but high post-exercise fat availability on cell signalling and expression of genes with putative roles in regulation of mitochondrial biogenesis, lipid metabolism and muscle protein synthesis (MPS). METHODS: Ten males completed a twice per day exercise model (3.5 h between sessions) comprising morning high-intensity interval (HIT) (8 x 5-min at 85% VO2peak) and afternoon steady-state (SS) running (60 min at 70% VO2peak)...
June 20, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27314136/influence-of-music-on-maximal-self-paced-running-performance-and-passive-post-exercise-recovery-rate
#18
Sam Lee, Derek S Kimmerly
BACKGROUND: The purpose of this study was to examine the influence of fast tempo music (FM) on self-paced running performance (heart rate, running speed, ratings of perceived exertion), and slow tempo music (SM) on post-exercise heart rate and blood lactate recovery rates. METHODS: Twelve participants (5 women) completed three randomly assigned conditions: static noise (control), FM and SM. Each condition consisted of self-paced treadmill running, and supine postexercise recovery periods (20 min each)...
January 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27298806/the-combined-effect-of-green-tea-and-acute-interval-sprinting-exercise-on-fat-oxidation-of-trained-and-untrained-males
#19
Daniel E Gahreman, Yati N Boutcher, Sonia Bustamante, Stephen H Boutcher
PURPOSE: This study investigated the combined effect of green tea and acute interval sprinting exercise on fat oxidation of trained and untrained males. METHODS: Fourteen trained and 14 untrained males ingested one capsule containing either green tea or cellulose with breakfast, lunch, and dinner, 24 hours before two exercise sessions. A fourth capsule was consumed 90 minutes before exercise after overnight NPO (nil per os). Participants performed a 20-minute interval sprinting cycling protocol, consisting of repeated bouts of 8-seconds of sprint cycling (at 65% of maximum power output) and 12-seconds of recovery (at 25% of maximum power output), followed by 75 minutes of post-exercise recovery...
March 31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/27294485/cold-water-immersion-for-athletic-recovery-one-size-does-not-fit-all
#20
Jessica M Stephens, Shona Halson, Joanna Miller, Gary J Slater, Christopher D Askew
The use of cold water immersion (CWI) for post-exercise recovery has become increasingly prevalent in recent years, however there is a dearth of strong scientific evidence to support the optimisation of protocols for performance benefits. While the increase in practice and popularity of CWI has led to multiple studies and reviews in the area of water immersion, this research has predominantly focused on performance outcomes associated with post-exercise CWI. Studies to date have generally shown positive results with enhanced recovery of performance...
June 13, 2016: International Journal of Sports Physiology and Performance
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