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Protein intake after exercise

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https://www.readbyqxmd.com/read/28899879/pronounced-energy-restriction-with-elevated-protein-intake-results-in-no-change-in-proteolysis-and-reductions-in-skeletal-muscle-protein-synthesis-that-are-mitigated-by-resistance-exercise
#1
Amy J Hector, Chris McGlory, Felipe Damas, Nicole Mazara, Steven K Baker, Stuart M Phillips
Preservation of lean body mass (LBM) may be important during dietary energy restriction (ER) and requires equal rates of muscle protein synthesis (MPS) and muscle protein breakdown (MPB). Currently, the relative contribution of MPS and MPB to the loss of LBM during ER in humans is unknown. We aimed to determine the impact of dietary protein intake and resistance exercise on MPS and MPB during a controlled short-term energy deficit. Adult men (body mass index, 28.6 ± 0.6 kg/m(2); age 22 ± 1 yr) underwent 10 d of 40%-reduced energy intake while performing unilateral resistance exercise and consuming lower protein (1...
September 12, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28893641/high-intensity-interval-training-has-beneficial-effects-on-cardiac-remodeling-through-local-renin-angiotensin-system-modulation-in-mice-fed-high-fat-or-high-fructose-diets
#2
Guilherme de Oliveira Sá, Vívian Dos Santos Neves, Shyrlei R de Oliveira Fraga, Vanessa Souza-Mello, Sandra Barbosa-da-Silva
AIMS: HIIT (high-intensity interval training) has the potential to reduce cardiometabolic risk factors, but the effects on cardiac remodeling and local RAS (renin-angiotensin system) in mice fed high-fat or high-fructose diets still need to be fully addressed. MAIN METHODS: Sixty male C57BL/6 mice (12weeks old) were randomly divided into three groups, control (C), High-fat (HF), or High-fructose diet (HRU) and were monitored for eight weeks before being submitted to the HIIT...
September 8, 2017: Life Sciences
https://www.readbyqxmd.com/read/28860165/influence-of-nutrient-ingestion-on-amino-acid-transporters-and-protein-synthesis-in-human-skeletal-muscle-after-sprint-exercise
#3
Håkan Claes Rundqvist, Mona Esbjörnsson, Olav Rooyackers, Ted Osterlund, Marcus Moberg, William Apró, Eva Blomstrand, Eva Jansson
Nutrient ingestion is known to increase the exercise-induced stimulation of muscle protein synthesis following resistance exercise. Less is known about the effect of nutrients on muscle protein synthesis following sprint exercise. At two occasions separated by one month, twelve healthy subjects performed three 30-s sprints with 20-min rest between bouts. In randomized order, they consumed a drink with essential amino acids and maltodextrin (nutrient) or flavored water (placebo). Muscle biopsies were obtained 80 and 200 min after the last sprint and blood samples were taken repeatedly during the experiment...
August 31, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28819266/amalaki-rasayana-a-traditional-indian-drug-enhances-cardiac-mitochondrial-and-contractile-functions-and-improves-cardiac-function-in-rats-with-hypertrophy
#4
Vikas Kumar, Kumar A Aneesh, K Kshemada, Kumar G S Ajith, Raj S S Binil, Neha Deora, G Sanjay, A Jaleel, T S Muraleedharan, E M Anandan, R S Mony, M S Valiathan, Kumar T R Santhosh, C C Kartha
We evaluated the cardioprotective effect of Amalaki Rasayana (AR), a rejuvenating Ayurvedic drug prepared from Phyllanthus emblica fruits in the reversal of remodeling changes in pressure overload left ventricular cardiac hypertrophy (LVH) and age-associated cardiac dysfunction in male Wistar rats. Six groups (aging groups) of 3 months old animals were given either AR or ghee and honey (GH) orally; seventh group was untreated. Ascending aorta was constricted using titanium clips in 3 months old rats (N = 24; AC groups) and after 6 months, AR or GH was given for further 12 months to two groups; one group was untreated...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819003/skeletal-muscle-signaling-metabolism-and-performance-during-sprint-exercise-in-severe-acute-hypoxia-after-the-ingestion-of-antioxidants
#5
David Morales-Alamo, Borja Guerra, Jesus Gustavo Ponce-Gonzalez, Amelia Guadalupe-Grau, Alfredo Santana, Marcos Martin-Rincon, Miriam Gelabert-Rebato, Joan Aureli Cadefau, Roser Cussó, Cecilia Dorado, Jose A L Calbet
The aim of this study was to determine reactive oxygen species (ROS) could play a role in blunting Thr(172)-AMPKα phosphorylation in human skeletal muscle after sprint exercise in hypoxia and to elucidate the potential signaling mechanisms responsible for this response. Nine volunteers performed a single 30s sprint (Wingate test) in two occasions while breathing hypoxic gas (PIO2=75 mmHg): one after the ingestion of placebo (P) and another following the intake of antioxidants (A) (α-lipoic acid, vitamin C, and vitamin E), with a randomized double-blind design...
August 17, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28790922/exercise-preserves-lean-mass-and-performance-during-severe-energy-deficit-the-role-of-exercise-volume-and-dietary-protein-content
#6
Jose A L Calbet, Jesús G Ponce-González, Jaime de La Calle-Herrero, Ismael Perez-Suarez, Marcos Martin-Rincon, Alfredo Santana, David Morales-Alamo, Hans-Christer Holmberg
The loss of fat-free mass (FFM) caused by very-low-calorie diets (VLCD) can be attenuated by exercise. The aim of this study was to determine the role played by exercise and dietary protein content in preserving the lean mass and performance of exercised and non-exercised muscles, during a short period of extreme energy deficit (~23 MJ deficit/day). Fifteen overweight men underwent three consecutive experimental phases: baseline assessment (PRE), followed by 4 days of caloric restriction and exercise (CRE) and then 3 days on a control diet combined with reduced exercise (CD)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28721837/effects-of-progressive-resistance-training-combined-with-a-protein-enriched-lean-red-meat-diet-on-health-related-quality-of-life-in-elderly-women-secondary-analysis-of-a-4-month-cluster-randomised-controlled-trial
#7
RANDOMIZED CONTROLLED TRIAL
Susan J Torres, Sian Robinson, Liliana Orellana, Stella L O'Connell, Carley A Grimes, Niamh L Mundell, David W Dunstan, Caryl A Nowson, Robin M Daly
Resistance training (RT) and increased dietary protein are recommended to attenuate age-related muscle loss in the elderly. This study examined the effect of a lean red meat protein-enriched diet combined with progressive resistance training (RT+Meat) on health-related quality of life (HR-QoL) in elderly women. In this 4-month cluster randomised controlled trial, 100 women aged 60-90 years (mean 73 years) from self-care retirement villages participated in RT twice a week and were allocated either 160 g/d (cooked) lean red meat consumed across 2 meals/d, 6 d/week or ≥1 serving/d (25-30 g) carbohydrates (control group, CRT)...
June 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28692631/increased-protein-requirements-in-female-athletes-after-variable-intensity-exercise
#8
Denise J Wooding, Jeff E Packer, Hiroyuki Kato, Daniel W D West, Glenda Courtney-Martin, Paul B Pencharz, Daniel R Moore
PURPOSE: Protein requirements are primarily studied in the context of resistance or endurance exercise with little research devoted to variable-intensity intermittent exercise characteristic of many team sports. Further, female populations are underrepresented in dietary sports science studies. We aimed to determine a dietary protein requirement in active females performing variable-intensity intermittent exercise using the indicator amino acid oxidation (IAAO) method. We hypothesized that these requirements would be greater than current IAAO-derived estimates in non-active adult males...
July 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28683243/timing-and-pattern-of-post-exercise-protein-ingestion-affects-whole-body-protein-balance-in-healthy-children-a-randomized-trial
#9
Kimberly A Volterman, Daniel R Moore, Peter Breithaupt, Dominik Grathwohl, Elizabeth A Offord, Leonidas G Karagounis, Brian W Timmons
The dose and timing of post-exercise protein ingestion can influence WBPB in adults, although comparable data from children are scarce. This study investigated how protein intake (both, amount and distribution) post-exercise can affect WBPB in physically active children. Thirty-five children (26 males; 9-13 years old) underwent a 5-d adaptation diet consuming 0.95 g protein·kg-1·d-1. To assess whole body protein kinetics over 6h and 24h of recovery, participants consumed 2 mg·kg-1 [15N]glycine before performing 3 × 20-min of variable intensity cycling...
July 6, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28680370/effects-of-a-combined-protein-and-antioxidant-supplement-on-recovery-of-muscle-function-and-soreness-following-eccentric-exercise
#10
Stephen J Ives, Samuel Bloom, Alexs Matias, Noelle Morrow, Natalya Martins, Yookee Roh, Daniel Ebenstein, Gabriel O'Brien, Daniela Escudero, Kevin Brito, Leah Glickman, Scott Connelly, Paul J Arciero
BACKGROUND: An acute bout of eccentric contractions (ECC) cause muscle fiber damage, inflammation, impaired muscle function (MF) and muscle soreness (MS). Individually, protein (PRO) and antioxidant (AO) supplementation may improve some aspects of recovery from ECC, though have yet to be combined. We sought to determine if combined PRO and AO supplementation (PRO + AO) improves MS and MF following damaging ECC over PRO alone. METHODS: Sixty sedentary college-aged males participated in a randomized, single-blind, parallel design study of peak isometric torque (PIMT), peak isokinetic torque (PIKT), thigh circumference (TC), and muscle soreness (MS) of knee extensor muscles measured at baseline, immediately after and 1, 2, 6, and 24 h after completion of 100 maximal ECC...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28656141/protein-supplementation-to-augment-the-effects-of-high-intensity-resistance-training-in-untrained-middle-aged-males-the-randomized-controlled-push-trial
#11
Andreas Wittke, Simon von Stengel, Michael Hettchen, Michael Fröhlich, Jürgen Giessing, Michael Lell, Michael Scharf, Michael Bebenek, Matthias Kohl, Wolfgang Kemmler
High intensity (resistance exercise) training (HIT) defined as a "single set resistance exercise to muscular failure" is an efficient exercise method that allows people with low time budgets to realize an adequate training stimulus. Although there is an ongoing discussion, recent meta-analysis suggests the significant superiority of multiple set (MST) methods for body composition and strength parameters. The aim of this study is to determine whether additional protein supplementation may increase the effect of a HIT-protocol on body composition and strength to an equal MST-level...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28651827/effects-of-nutrition-and-physical-exercise-intervention-in-palliative-cancer-patients-a-randomized-controlled-trial
#12
Alexandra Uster, Maya Ruehlin, Stefanie Mey, David Gisi, Ruud Knols, Reinhard Imoberdorf, Miklos Pless, Peter E Ballmer
BACKGROUND & AIMS: Cancer cachexia is multifactorial and should be targeted using a multimodal form of intervention. The purpose of the present trial was to test the effects of a combined nutrition and physical exercise program on cancer patients with metastatic or locally advanced tumors of the gastrointestinal and lung tracts. METHODS: Patients were randomized into two groups: One group received a minimum of three standardized individual nutritional counselling sessions and participated in a 60-min exercise program twice a week...
June 8, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28642676/international-society-of-sports-nutrition-position-stand-protein-and-exercise
#13
REVIEW
Ralf Jäger, Chad M Kerksick, Bill I Campbell, Paul J Cribb, Shawn D Wells, Tim M Skwiat, Martin Purpura, Tim N Ziegenfuss, Arny A Ferrando, Shawn M Arent, Abbie E Smith-Ryan, Jeffrey R Stout, Paul J Arciero, Michael J Ormsbee, Lem W Taylor, Colin D Wilborn, Doug S Kalman, Richard B Kreider, Darryn S Willoughby, Jay R Hoffman, Jamie L Krzykowski, Jose Antonio
The International Society of Sports Nutrition (ISSN) provides an objective and critical review related to the intake of protein for healthy, exercising individuals. Based on the current available literature, the position of the Society is as follows:An acute exercise stimulus, particularly resistance exercise, and protein ingestion both stimulate muscle protein synthesis (MPS) and are synergistic when protein consumption occurs before or after resistance exercise.For building muscle mass and for maintaining muscle mass through a positive muscle protein balance, an overall daily protein intake in the range of 1...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28637444/a-comparison-of-nutritional-intake-and-daily-physical-activity-of-girls-aged-8-11%C3%A2-years-old-in-makkah-saudi-arabia-according-to-weight-status
#14
Rabab Al-Kutbe, Anne Payne, Anne de Looy, Gail A Rees
BACKGROUND: Obesity rates in Saudi Arabia are amongst the highest in the world. It is known that teenage girls are less active than teenage boys, but less is known about the diet and activity patterns in younger girls. Therefore this study sought to investigate dietary intake and daily physical activity in girls aged 8-11 years old in Saudi Arabia. METHODS: This was a cross- sectional observational study conducted in seven schools across the city of Makkah. A total of 266 girls had anthropometric measurements taken including height, weight, waist circumference and body fat estimations...
June 21, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28620941/endothelial-mechanotransduction-proteins-and-vascular-function-are-altered-by-dietary-sucrose-supplementation-in-healthy-young-male-subjects
#15
Lasse Gliemann, Nicolai Rytter, Mads Lindskrog, Martina H Lundberg Slingsby, Thorbjörn Åkerström, Lykke Sylow, Erik A Richter, Ylva Hellsten
KEY POINTS: Mechanotransduction in endothelial cells is a central mechanism in the regulation of vascular tone and vascular remodelling Mechanotransduction and vascular function may be affected by high sugar levels in plasma because of a resulting increase in oxidative stress and increased levels of advanced glycation end-products (AGE). In healthy young subjects, 2 weeks of daily supplementation with 3 × 75 g of sucrose was found to reduce blood flow in response to passive lower leg movement and in response to 12 W of knee extensor exercise...
August 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28608438/a-randomized-clinical-trial-investigating-the-efficacy-of-targeted-nutrition-as-adjunct-to-exercise-training-in-copd
#16
Coby van de Bool, Erica P A Rutten, Ardy van Helvoort, Frits M E Franssen, Emiel F M Wouters, Annemie M W J Schols
BACKGROUND: Evidence regarding the efficacy of nutritional supplementation to enhance exercise training responses in COPD patients with low muscle mass is limited. The objective was to study if nutritional supplementation targeting muscle derangements enhances outcome of exercise training in COPD patients with low muscle mass. METHODS: Eighty-one COPD patients with low muscle mass, admitted to out-patient pulmonary rehabilitation, randomly received oral nutritional supplementation, enriched with leucine, vitamin D, and omega-3 fatty acids (NUTRITION) or PLACEBO as adjunct to 4 months supervised high intensity exercise training...
June 12, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28604135/adding-soy-protein-to-milk-enhances-the-effect-of-resistance-training-on-muscle-strength-in-postmenopausal-women
#17
Fábio L Orsatti, Nailza Maestá, Erick P de Oliveira, Jorge Nahas Neto, Roberto C Burini, Paulo R P Nunes, Aletéia P Souza, Fernanda M Martins, Eliana P Nahas
Resistance training (RT) and high-quality protein ingestion improves muscle mass (MM) and strength (MS). However, no study has evaluated the effect of ingesting milk plus soy protein (SOY) on MM and MS in postmenopausal women (PW). Thus, the aim of this study was to evaluate the effects of adding SOY to milk on MM and MS after 16 weeks of RT. Thirty-two PW were randomized and allocated into two groups: placebo and RT (PL+RT, n = 16) and SOY and RT (SOY+RT, n = 16). The SOY+RT received 25 g of SOY while the PL+RT received 25 g of maltodextrin (placebo)...
June 12, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28603468/minimal-dose-of-milk-protein-concentrate-to-enhance-the-anabolic-signalling-response-to-a-single-bout-of-resistance-exercise-a-randomised-controlled-trial
#18
Cameron J Mitchell, Nina Zeng, Randall F D'Souza, Sarah M Mitchell, Kirsten Aasen, Aaron C Fanning, Sally D Poppitt, David Cameron-Smith
BACKGROUND: Resistance training is a potent stimulus to induce muscle hypertrophy. Supplemental protein intake is known to enhance gains in muscle mass through activation of the mammalian target of rapamycin complex 1 (mTORC1) pathway, which initiates protein translation. While the optimal dose of high quality protein to promote post exercise anabolism in young or older men has been investigated, little is known about the minimum doses of protein required to potentiate the resistance exercise activation of anabolic signalling in middle aged men...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28578654/progressive-resistance-training-in-head-and-neck-cancer-patients-during-concomitant-chemoradiotherapy-design-of-the-dahanca-31-randomized-trial
#19
Camilla K Lonkvist, Simon Lønbro, Anders Vinther, Bo Zerahn, Eva Rosenbom, Hanne Primdahl, Pernille Hojman, Julie Gehl
BACKGROUND: Head and neck cancer patients undergoing concomitant chemoradiotherapy (CCRT) frequently experience loss of muscle mass and reduced functional performance. Positive effects of exercise training are reported for many cancer types but biological mechanisms need further elucidation. This randomized study investigates whether progressive resistance training (PRT) may attenuate loss of muscle mass and functional performance. Furthermore, biochemical markers and muscle biopsies will be investigated trying to link biological mechanisms to training effects...
June 3, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28527105/association-between-lumbar-bone-mineral-density-and-serum-uric-acid-in-postmenopausal-women-a-cross-sectional-study-of-healthy-chinese-population
#20
Wen Han, Xiaojuan Bai, Nan Wang, Lulu Han, Xuefeng Sun, Xiangmei Chen
Partial correlation and regression analyses were used in this study. We showed that there is a linear relationship between bone mineral density and serum uric acid within the normal physiologic range, and higher serum uric acid levels had a protective effect on bone loss in postmenopausal osteoporosis. PURPOSE: The significance of the relationship between lumbar bone mineral density (()BMD) and serum uric acid (SUA) levels is unclear. The aims of this study were to investigate on a population-level the association between lumbar BMD and SUA within the normal physiologic range and to determine whether SUA plays a protective role in bone loss in healthy postmenopausal Chinese women...
December 2017: Archives of Osteoporosis
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