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Protein intake after exercise

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https://www.readbyqxmd.com/read/29746639/branched-chain-amino-acids-are-the-primary-limiting-amino-acids-in-the-diets-of-endurance-trained-men-after-a-bout-of-prolonged-exercise
#1
Hiroyuki Kato, Katsuya Suzuki, Makoto Bannai, Daniel R Moore
Background: The indicator amino acid oxidation (IAAO) method estimates the protein intake required to maximize whole-body protein synthesis and identify the daily protein requirement in a variety of populations. However, it is unclear whether the greater requirements for endurance athletes previously determined by the IAAO reflect an increased demand for all or only some amino acids. Objective: The aim of this study was to determine the primary rate-limiting amino acids in endurance-trained athletes after prolonged exercise, by measuring the oxidation of ingested [1-13C]phenylalanine in response to variable amino acid intake...
May 9, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29722847/dietary-acid-load-and-bone-turnover-during-long-duration-spaceflight-and-bed-rest
#2
Sara R Zwart, Barbara L Rice, Holly Dlouhy, Linda C Shackelford, Martina Heer, Matthew D Koslovsky, Scott M Smith
Background: Bed rest studies document that a lower dietary acid load is associated with lower bone resorption. Objective: We tested the effect of dietary acid load on bone metabolism during spaceflight. Design: Controlled 4-d diets with a high or low animal protein-to-potassium (APro:K) ratio (High and Low diets, respectively) were given to 17 astronauts before and during spaceflight. Each astronaut had 1 High and 1 Low diet session before flight and 2 High and 2 Low sessions during flight, in addition to a 4-d session around flight day 30 (FD30), when crew members were to consume their typical in-flight intake...
May 1, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29673242/study-of-muscle-contraction-induced-by-electrical-pulse-stimulation-and-nitric-oxide-in-c2c12-myotube-cells
#3
In Ho Lee, Yoon Jeong Lee, Hyobin Seo, Yi Seul Kim, Ju-Ock Nam, Byung-Duk Jeon, Tae-Dong Kwon
PURPOSE: This study aimed to examine the independent effect of electrical pulse stimulation(EPS) and nitric oxide(NO) on muscle contraction and their synergistic or combined effect on contraction phenomenon using C2C12 mouse skeletal muscle cells. METHODS: Some differentiated C2C12 myotube cells were untreated (control). Other cells did not receive EPS and did receive 0.5, 1.0, or 2.0 mM of the NO donor, S-nitroso-N-acetyl-penicillamine (SNAP; -E/S0.5, -E/S1.0, and -E/S2...
March 30, 2018: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29557519/protein-availability-and-satellite-cell-dynamics-in-skeletal-muscle
#4
REVIEW
Baubak Shamim, John A Hawley, Donny M Camera
Human skeletal muscle satellite cells are activated in response to both resistance and endurance exercise. It was initially proposed that satellite cell proliferation and differentiation were only required to support resistance exercise-induced hypertrophy. However, satellite cells may also play a role in muscle fibre remodelling after endurance-based exercise and extracellular matrix regulation. Given the importance of dietary protein, particularly branched chain amino acids, in supporting myofibrillar and mitochondrial adaptations to both resistance and endurance-based training, a greater understanding of how protein intake impacts satellite cell activity would provide further insight into the mechanisms governing skeletal muscle remodelling with exercise...
March 20, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29556158/calorie-restriction-regime-enhances-physical-performance-of-trained-athletes
#5
Victoria Pons, Joan Riera, Xavier Capó, Miquel Martorell, Antoni Sureda, Josep A Tur, Franchek Drobnic, Antoni Pons
Background: Caloric restriction induces mitochondrial biogenesis and improves physical fitness in rodents. We aimed to provide evidence of how caloric restriction affects the body composition and physical performance of trained athletes and to evaluate the possible impact of an every-other-day feeding diet on nutritional deficiencies of micronutrients and essential fatty acids. Methods: The study was performed with 12 healthy male athletes by carrying out a 33% caloric restriction with respect to their usual diet...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29534031/l-carnitine-supplementation-in-recovery-after-exercise
#6
REVIEW
Roger Fielding, Linda Riede, James P Lugo, Aouatef Bellamine
Given its pivotal role in fatty acid oxidation and energy metabolism, l-carnitine has been investigated as ergogenic aid for enhancing exercise capacity in the healthy athletic population. Early research indicates its beneficial effects on acute physical performance, such as increased maximum oxygen consumption and higher power output. Later studies point to the positive impact of dietary supplementation with l-carnitine on the recovery process after exercise. It is demonstrated that l-carnitine alleviates muscle injury and reduces markers of cellular damage and free radical formation accompanied by attenuation of muscle soreness...
March 13, 2018: Nutrients
https://www.readbyqxmd.com/read/29523089/effect-of-whole-body-electromyostimulation-and-or-protein-supplementation-on-obesity-and-cardiometabolic-risk-in-older-men-with-sarcopenic-obesity-the-randomized-controlled-franso-trial
#7
Wolfgang Kemmler, Matthias Kohl, Ellen Freiberger, Cornel Sieber, Simon von Stengel
BACKGROUND: Sarcopenic Obesity (SO) is characterized by low lean and high fat mass; i.e. from a functional aspect a disproportion between engine (muscle) and mass to be moved (fat). At present, most research focuses on the engine, but the close "cross talk" between age-associated adipose and skeletal muscle tissue inflammation calls for comprehensive interventions that affect both components alike. Protein and exercise are likely candidates, however with respect to the latter, the enthusiasm for intense and frequent exercise is rather low, especially in functionally limited older people...
March 9, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29519118/comparison-of-diet-and-physical-activity-of-children-and-adolescents-with-patients-after-cancer-treatment
#8
Joanna Zapolska, Katarzyna Witczak-Sawczuk, Maryna Krawczuk-Rybak, Małgorzata Sawicka-Żukowska, Joanna Smarkusz, Lucyna Ostrowska
Background: Properly balanced diet and exercise are an essential element of healthy living for children and adolescents. Particular attention should be paid to nutrition and physical activity among juniors after cancer treatment, which is one of the most important elements of the convalescence period. Objective: The aim of the study was a comparative analysis of diet, physical activity of healthy children and adolescents with patients after cancer treatment. Material and methods: The study involved 60 children and adolescents; 30 healthy juniors and 30 patients after treatment for cancer...
2018: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/29470691/even-effect-of-milk-protein-and-carbohydrate-intake-but-no-further-effect-of-heavy-resistance-exercise-on-myofibrillar-protein-synthesis-in-older-men
#9
Søren Reitelseder, Kasper Dideriksen, Jakob Agergaard, Nikolaj M Malmgaard-Clausen, Rasmus L Bechshoeft, Rasmus K Petersen, Anja Serena, Ulla R Mikkelsen, Lars Holm
PURPOSE: The responsiveness of older individuals' skeletal muscle to anabolic strategies may be impaired. However, direct comparisons within the same experimental setting are sparse. The aim of this study was to assess the resting and post-resistance exercise muscle protein synthesis rates in response to two types of milk protein and carbohydrate using a unilateral exercise leg model. METHODS: Twenty-seven older (69 ± 1 year, mean ± SE) men were randomly assigned one of three groups: Whey hydrolysate (WH), caseinate (CAS), or carbohydrate (CHO)...
February 22, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29462924/achieving-optimal-post-exercise-muscle-protein-remodeling-in-physically-active-adults-through-whole-food-consumption
#10
REVIEW
Stephan van Vliet, Joseph W Beals, Isabel G Martinez, Sarah K Skinner, Nicholas A Burd
Dietary protein ingestion is critical to maintaining the quality and quantity of skeletal muscle mass throughout adult life. The performance of acute exercise enhances muscle protein remodeling by stimulating protein synthesis rates for several hours after each bout, which can be optimized by consuming protein during the post-exercise recovery period. To date, the majority of the evidence regarding protein intake to optimize post-exercise muscle protein synthesis rates is limited to isolated protein sources...
February 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29455575/exercise-counteracts-the-homeostatic-decrease-in-thermogenesis-caused-by-caloric-restriction-in-sheep
#11
John-Paul Fuller-Jackson, Iain J Clarke, Alexandra Rao, Belinda A Henry
Caloric restriction causes a homeostatic reduction in thermogenesis. We aimed to determine whether exercise could counteract this. We studied four groups of normal-weight ewes ( n = 5), including control sedentary fed ad libitum, exercise fed ad libitum (30 min/d, 5 d/wk), diet-restricted (70% of ad libitum food intake), and combined diet and exercise. Temperature probes implanted in sternal and retroperitoneal adipose tissue and skeletal muscle measured thermogenesis. After the 4-wk intervention, hypothalami were collected for in situ hybridization, and fat and muscle biopsies were collected for real-time PCR and Western blotting...
February 13, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29431521/effect-of-exercise-duration-on-subsequent-appetite-and-energy-intake-in-obese-adolescent-girls
#12
Julie Masurier, Marie-Eve Mathieu, S Nicole Fearnbach, Charlotte Cardenoux, Valérie Julian, Céline Lambert, Bruno Pereira, Martine Duclos, Yves Boirie, David Thivel
There is a growing interest regarding the effect of exercise on appetite and energy intake in youth. While the role of exercise intensity has been a primary focus of study, the effect of exercise duration on subsequent food intake has not been fully examined in obese adolescents. On three separate mornings in a randomly assigned order, obese adolescent girls (n=20) aged 12-15 years old were asked to perform a rest session (CON) or two cycling sessions for 20 (EX20) or 40 (EX40) minutes set at their ventilatory threshold...
February 12, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29405780/effects-of-high-vs-low-protein-intake-on-body-composition-and-maximal-strength-in-aspiring-female-physique-athletes-engaging-in-an-8-week-resistance-training-program
#13
Bill I Campbell, Danielle Aguilar, Laurin Conlin, Andres Vargas, Brad Jon Schoenfeld, Amey Corson, Chris Gai, Shiva Best, Elfego Galvan, Kaylee Couvillion
Aspiring female physique athletes are often encouraged to ingest relatively high levels of dietary protein in conjunction with their resistance-training programs. However, there is little to no research investigating higher vs. lower protein intakes in this population. This study examined the influence of a high vs. low protein diet in conjunction with an 8-week resistance training program in this population. Seventeen females (21.2±2.1 years; 165.1±5.1 cm; 61±6.1 kg) were randomly assigned to a high protein diet (HP: 2...
February 6, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29405604/associations-of-the-trunk-skeletal-musculature-and-dietary-intake-to-biomarkers-of-cardiometabolic-health-after-spinal-cord-injury
#14
Sally M Abilmona, Ashraf S Gorgey
PURPOSE: Skeletal muscle atrophy and poor dietary habits may contribute to increased adiposity and impaired metabolic health after spinal cord injury (SCI). The relative association of trunk muscle cross-sectional areas (CSA) versus dietary habits to central adiposity and impaired metabolic health after SCI remains unclear. METHODS: Twenty-two men with motor complete SCI completed five-day dietary recalls for 4 weeks. Trunk muscle CSAs as well as visceral and subcutaneous adipose tissue (VAT and SAT, respectively) were quantified using magnetic resonance imaging...
February 6, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29401600/high-dietary-fat-intake-increases-fat-oxidation-and-reduces-skeletal-muscle-mitochondrial-respiration-in-trained-humans
#15
Jill J Leckey, Nolan J Hoffman, Evelyn B Parr, Brooke L Devlin, Adam J Trewin, Nigel K Stepto, James P Morton, Louise M Burke, John A Hawley
High-fat, low-carbohydrate (CHO) diets increase whole-body rates of fat oxidation and down-regulate CHO metabolism. We measured substrate utilization and skeletal muscle mitochondrial respiration to determine whether these adaptations are driven by high fat or low CHO availability. In a randomized crossover design, 8 male cyclists consumed 5 d of a high-CHO diet [>70% energy intake (EI)], followed by 5 d of either an isoenergetic high-fat (HFAT; >65% EI) or high-protein diet (HPRO; >65% EI) with CHO intake clamped at <20% EI...
January 17, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29398254/intensive-lifestyle-modifications-with-or-without-liraglutide-3mg-vs-sleeve-gastrectomy-a-three-arm-non-randomised-controlled-pilot-study
#16
E Capristo, S Panunzi, A De Gaetano, M Raffaelli, C Guidone, A Iaconelli, L L'Abbate, A L Birkenfeld, R Bellantone, S R Bornstein, G Mingrone
BACKGROUND/OBJECTIVES: As only 1% of clinically eligible subjects choose to undergo surgical treatment for obesity, other options should be investigated. This study aimed to assess the effects of intensive lifestyle modification (ILM) with or without 3-mg liraglutide daily vs. sleeve gastrectomy (SG) on BMI after 1 year. SUBJECTS/METHODS: In this study performed at an Italian university hospital, non-diabetic patients eligible for bariatric surgery were recruited from a weight-loss clinic and had the option to choose from three possible weight-loss programmes up to an allocation of 25 subjects in each arm matched by BMI and age...
December 29, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/29391380/protein-enriched-milk-based-supplement-to-counteract-sarcopenia-in-acutely-ill-geriatric-patients-offered-resistance-exercise-training-during-and-after-hospitalisation-study-protocol-for-a-randomised-double-blind-multicentre-trial
#17
Josephine Gade, Anne Marie Beck, Christian Bitz, Britt Christensen, Tobias Wirenfeldt Klausen, Anders Vinther, Arne Astrup
INTRODUCTION: Age-related loss of muscle mass and strength, sarcopaenia, burdens many older adults. The process is accelerated with bed rest, protein intakes below requirements and the catabolic effect of certain illnesses. Thus, acutely ill, hospitalised older adults are particularly vulnerable. Protein supplementation can preserve muscle mass and/or strength and, combining this with resistance exercise training (RT), may have additional benefits. Therefore, this study investigates the effect of protein supplementation as an addition to offering RT among older adults while admitted to the geriatric ward and after discharge...
February 1, 2018: BMJ Open
https://www.readbyqxmd.com/read/29370671/the-synergistic-effect-of-protein-complex-supplementation-combined-with-12-weeks-of-resistance-training-on-isokinetic-muscular-function-in-untrained-young-males
#18
Jiwoong Jang, Hun-Young Park, Choongsung Yoo, Yeram Park, Jisu Kim, Kiwon Lim
PURPOSE: Resistance exercise training (RET) and an additional intake of dietary protein supplements may improve muscle mass and muscular function, and reduce inflammatory markers. The types, amount, and timing of dietary protein supplements are important for the synergistic effects of resistance training and dietary protein supplements. We hypothesized that a 25.1 g protein complex supplement taken for 12 weeks, immediately before and after resistance exercise, would enhance fat free mass and isokinetic muscular function in young untrained males...
December 31, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29345166/effects-of-coffee-components-on-muscle-glycogen-recovery-a-systematic-review
#19
Laís Monteiro Rodrigues Loureiro, Caio Eduardo Gonçalves Reis, Teresa Helena Macedo da Costa
Coffee is one of the most consumed beverages in the world and it can improve insulin sensitivity, stimulating glucose uptake in skeletal muscle when adequate carbohydrate intake is observed. The aim of this review is to analyze the effects of coffee and coffee components on muscle glycogen metabolism. A literature search was conducted according to PRISMA and seven studies were included. They explored the effects of coffee components on various substances and signaling proteins. In one of the studies with humans, caffeine was shown to increase glucose levels, Ca2+ /calmodulin-dependent protein kinase (CaMK) phosphorylation, glycogen resynthesis rates and glycogen accumulation after exercise...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29300423/effects-of-low-dose-dairy-protein-plus-micronutrient-supplementation-during-resistance-exercise-on-muscle-mass-and-physical-performance-in-older-adults-a-randomized-controlled-trial
#20
S Seino, K Sumi, M Narita, Y Yokoyama, K Ashida, A Kitamura, S Shinkai
OBJECTIVES: To investigate whether supplementation with low-dose dairy protein plus micronutrients augments the effects of resistance exercise (RE) on muscle mass and physical performance compared with RE alone among older adults. DESIGN: Randomized controlled trial. SETTING: Tokyo, Japan. PARTICIPANTS: Eighty-two community-dwelling older adults (mean age, 73.5 years) were randomly allocated to an RE plus dairy protein and micronutrient supplementation group or an RE only group (n = 41 each)...
2018: Journal of Nutrition, Health & Aging
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