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Protein and resistance exercise

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https://www.readbyqxmd.com/read/29346163/the-hippo-signaling-pathway-in-the-regulation-of-skeletal-muscle-mass-and-function
#1
Kevin I Watt, Craig A Goodman, Troy A Hornberger, Paul Gregorevic
The Hippo signaling pathway regulates the activity of the proteins Yes-associated protein (Yap) and transcriptional co-activator with PDZ-binding motif (Taz) to control tissue growth in many different cell types. Previously, we demonstrated Yap is a critical regulator of skeletal muscle mass. We hypothesize that alterations in Yap and Taz activity modulate the anabolic adaptations of skeletal muscle to resistance exercise.
January 15, 2018: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/29343183/the-acute-angiogenic-signalling-response-to-low-load-resistance-exercise-with-blood-flow-restriction
#2
Richard A Ferguson, Julie E A Hunt, Mark P Lewis, Neil R W Martin, Darren J Player, Carolin Stangier, Conor W Taylor, Mark C Turner
This study investigated protein kinase activation and gene expression of angiogenic factors in response to low-load resistance exercise with or without blood flow restriction (BFR). In a repeated measures cross-over design, six males performed four sets of bilateral knee extension exercise at 20% 1RM (reps per set = 30:15:15:continued to fatigue) with BFR (110 mmHg) and without (CON). Muscle biopsies were obtained from the vastus lateralis before, 2 and 4 h post-exercise. mRNA expression was determined using real-time RT-PCR...
January 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29331050/exercise-counteracts-lipotoxicity-by-improving-lipid-turnover-and-lipid-droplet-quality
#3
Evelyn Zacharewicz, Matthijs K C Hesselink, Patrick Schrauwen
The incidence of obesity and metabolic disease, such as type 2 diabetes mellitus (T2D), are rising globally. Dietary lipid over-supply leads to lipid accumulation at ectopic sites, such as skeletal muscle. Ectopic lipid storage is highly correlated with insulin resistance and T2D, likely due to a loss of metabolic flexibility - the capacity to switch between fat and glucose oxidation upon insulin stimulation - and cellular dysfunction because of lipotoxicity. However, muscle lipid levels are also elevated in endurance trained athletes, presenting a paradoxical phenotype of increased intramuscular lipids along with high insulin sensitivity - the "athletes' paradox"...
January 13, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29330356/metabolic-and-molecular-changes-associated-with-the-increased-skeletal-muscle-insulin-action-24-48%C3%A2-h-after-exercise-in-young-and-old-humans
#4
REVIEW
Francis B Stephens, Kostas Tsintzas
The molecular and metabolic mechanisms underlying the increase in insulin sensitivity (i.e. increased insulin-stimulated skeletal muscle glucose uptake, phosphorylation and storage as glycogen) observed from 12 to 48 h following a single bout of exercise in humans remain unresolved. Moreover, whether these mechanisms differ with age is unclear. It is well established that a single bout of exercise increases the translocation of the glucose transporter, GLUT4, to the plasma membrane. Previous research using unilateral limb muscle contraction models in combination with hyperinsulinaemia has demonstrated that the increase in insulin sensitivity and glycogen synthesis 24 h after exercise is also associated with an increase in hexokinase II (HKII) mRNA and protein content, suggesting an increase in the capacity of the muscle to phosphorylate glucose and divert it towards glycogen synthesis...
January 12, 2018: Biochemical Society Transactions
https://www.readbyqxmd.com/read/29327644/evaluation-of-supervised-multimodal-prehabilitation-programme-in-cancer-patients-undergoing-colorectal-resection-a-randomized-control-trial
#5
Guillaume Bousquet-Dion, Rashami Awasthi, Sarah-Ève Loiselle, Enrico M Minnella, Ramanakumar V Agnihotram, Andreas Bergdahl, Francesco Carli, Celena Scheede-Bergdahl
BACKGROUND: Prehabilitation has been previously shown to be more effective in enhancing postoperative functional capacity than rehabilitation alone. The purpose of this study was to determine whether a weekly supervised exercise session could provide further benefit to our current prehabilition program, when comparing to standard post-surgical rehabilitation. METHODS: A parallel-arm single-blind randomized control trial was conducted in patients scheduled for non-metastatic colorectal cancer resection...
January 12, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29326089/associations-between-markers-of-oxidative-stress-skeletal-muscle-mass-and-function-and-to-the-influence-of-resistance-exercise-training-in-older-adults
#6
Ciriaco Carru, Mariasole Da Boit, Panagiotis Paliogiannis, Angelo Zinellu, Salvatore Sotgia, Rachael Sibson, Judith R Meakin, Richard M Aspden, Arduino A Mangoni, Stuart R Gray
BACKGROUND: Oxidative stress (OS) negatively affects skeletal muscle homeostasis in experimental models of ageing. However, little is known about the associations between circulating OS markers and parameters of muscle mass and function, and their responses to exercise training, in humans. METHODS: Maximal voluntary contraction (MVC, primary outcome) and isokinetic torque of the knee extensors at 30° s-1 (MIT), muscle cross-sectional area (MCSA) and quality (MQ, secondary outcomes), and plasma concentrations of malondialdehyde (MDA, pro-OS), homocysteine (HCY, pro-OS), taurine (TAU, anti-OS), and protein sulphydryl groups (PSH, anti-OS) were measured in 27 healthy older males and 23 females at baseline and after an 18-week resistance exercise program, with or without a nutritional intervention (fish oil vs...
January 8, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29324825/early-and-later-phases-satellite-cell-responses-and-myonuclear-content-with-resistance-training-in-young-men
#7
Felipe Damas, Cleiton A Libardi, Carlos Ugrinowitsch, Felipe C Vechin, Manoel E Lixandrão, Tim Snijders, Joshua P Nederveen, Aline V Bacurau, Patricia Brum, Valmor Tricoli, Hamilton Roschel, Gianni Parise, Stuart M Phillips
Satellite cells (SC) are associated with skeletal muscle remodelling after muscle damage and/or extensive hypertrophy resulting from resistance training (RT). We recently reported that early increases in muscle protein synthesis (MPS) during RT appear to be directed toward muscle damage repair, but MPS contributes to hypertrophy with progressive muscle damage attenuation. However, modulations in acute-chronic SC content with RT during the initial (1st-wk: high damage), early (3rd-wk: attenuated damage), and later (10th-wk: no damage) stages is not well characterized...
2018: PloS One
https://www.readbyqxmd.com/read/29315169/health-benefits-of-an-innovative-exercise-program-for-mitochondrial-disorders
#8
Carmen Fiuza-Luces, Jorge Díez-Bermejo, Miguel Fernández-de la Torre, Gabriel Rodríguez-Romo, Paz Sanz-Ayán, Aitor Delmiro, Diego Munguía-Izquierdo, Irene Rodríguez-Gómez, Ignacio Ara, Cristina Domínguez-González, Joaquín Arenas, Miguel A Martín, Alejandro Lucia, María Morán
PURPOSE: We determined the effects of an innovative 8-week exercise intervention (aerobic, resistance and inspiratory muscle training) for patients with mitochondrial disease (MD). METHODS: Several endpoints were assessed in 12 patients (19-59 years, 4 female) at pre-training, post-training and after 4-week detraining: aerobic power, muscle strength/power and maximal inspiratory pressure (main endpoints), ability to perform activities of daily living (ADL), body composition, quality of life and blood myokines (secondary endpoints)...
January 8, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29300979/high-intensity-exercise-decreases-ip6k1-muscle-content-improves-insulin-sensitivity-si2-in-glucose-intolerant-individuals
#9
Jane Naufahu, Bradley Elliott, Anatoliy Markiv, Petra Dunning-Foreman, Maggie McGrady, David Howard, Peter Watt, Richard W A Mackenzie
Context: Insulin resistance in skeletal muscle contributes to whole body hyperglycaemia and the secondary complications associated with type 2 diabetes. Inositol hexakisphosphate kinase-1 (IP6K1) may inhibit insulin-stimulated glucose transport in this tissue type. Objective: Muscle and plasma IP6K1 were correlated with two-compartment models of glucose control in insulin-resistant hyperinsulimic individuals. Muscle IP6K1 was also compared following two different exercise trials...
December 29, 2017: Journal of Clinical Endocrinology and 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
#10
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
https://www.readbyqxmd.com/read/29299199/swimming-training-alleviated-insulin-resistance-through-wnt3a-%C3%AE-catenin-signaling-in-type-2-diabetic-rats
#11
Qiang Yang, Wen-Wen Wang, Pu Ma, Zhong-Xuan Ma, Meng Hao, Temitope I Adelusi, Lei-Du, Xiao-Xing Yin, Qian Lu
Objectives: Increasing evidence suggests that regular physical exercise improves type 2 diabetes mellitus (T2DM). However, the potential beneficial effects of swimming on insulin resistance and lipid disorder in T2DM, and its underlying mechanisms remain unclear. Materials and Methods: Rats were fed with high fat diet and given a low dosage of Streptozotocin (STZ) to induce T2DM model, and subsequently treated with or without swimming exercise. An 8-week swimming program (30, 60 or 120 min per day, 5 days per week) decreased body weight, fasting blood glucose and fasting insulin...
November 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29289515/conditioned-medium-from-contracting-skeletal-muscle-cells-reverses-insulin-resistance-and-dysfunction-of-endothelial-cells
#12
Yihe Zhao, Nana Li, Zhu Li, Da Zhang, Liming Chen, Zhi Yao, Wenyan Niu
OBJECTIVE: Obese adipose tissue has been characterized with chronic inflammation associated with elevated secretion of inflammatory cytokines and declined secretion of anti-inflammatory cytokines which can impair endothelial function in an endocrine manner. Adipose tissue hypoxia plays a role in the changes of cytokines. Physical exercise / muscle contraction may help preventing cardiovascular disease through improving insulin resistance and endothelium function. However the mechanism is unclear...
December 28, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29284664/lysophosphatidic-acid-acyltransferase-3-incorporates-docosahexaeneoic-acid-into-skeletal-muscle-cell-membranes-and-is-upregulated-by-ppar%C3%AE-activation
#13
William J Valentine, Suzumi M Tokuoka, Daisuke Hishikawa, Yoshihiro Kita, Hideo Shindou, Takao Shimizu
Adaption of skeletal muscle to endurance exercise includes PPARδ- and AMP-activated protein kinase (AMPK) / PPARγ coactivator 1α (PGC1α) -mediated transcriptional responses that result in increased oxidative capacity and conversion of glycolytic to more oxidative fiber types. These changes are associated with whole-body metabolic alterations including improved glucose handling and resistance to obesity. Increased docosahexaenoic acid (DHA; 22:6n-3) content in phosphatidylcholine (PC) and phosphatidylethanolamine (PE) is also reported in endurance exercise-trained glycolytic muscle; however, the DHA-metabolizing enzymes involved and biological significance of the enhanced DHA content are unknown...
December 28, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/29262409/early-markers-of-cardiovascular-risk-in-autosomal-dominant-polycystic-kidney-disease
#14
Silvia Lai, Daniela Mastroluca, Silvia Matino, Valeria Panebianco, Antonio Vitarelli, Lidia Capotosto, Irene Turinese, Paolo Marinelli, Marco Rossetti, Alessandro Galani, Pia Baiocchi, Anna R D'Angelo, Paolo Palange
BACKGROUND/AIMS: Cardiovascular disease is the most frequent cause of morbidity and mortality in autosomal dominant polycystic kidney disease (ADPKD) patients, often before the onset of renal failure, and the pathogenetic mechanism is not yet well elucidated. The aim of the study was to identify early and noninvasive markers of cardiovascular risk in young ADPKD patients, in the early stages of disease. METHODS: A total of 26 patients with ADPKD and 24 control group, matched for age and sex, were enrolled, and we have assessed inflammatory indexes, mineral metabolism, metabolic state and markers of atherosclerosis and endothelial dysfunction (carotid intima media thickness (IMT), ankle brachial index (ABI), flow mediated dilation (FMD), renal resistive index (RRI), left ventricular mass index (LVMI)) and cardiopulmonary exercise testing (CPET), maximal O2 uptake (V'O2max), and O2 uptake at lactic acid threshold (V'O2@LT)...
December 15, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29260401/the-impact-of-post-resistance-exercise-protein-consumption-on-subsequent-appetite-and-daily-energy-intake-of-sarcopenic-older-men-a-pilot-study
#15
Mathieu Maltais, Morgane Du Bois-Dit-Bonclaude, Taha Amamou, Eléonor Riesco, Isabelle J Dionne
BACKGROUND: Because of its satiating effect, it has been widely purported that a high-protein beverage may reduce subsequent appetite and food intake in healthy aged individuals, therefore annihilating any supplemental effect. AIMS: The goal of the study was to examine the impact of a post-exercise protein supplement from dairy products in the hours following resistance exercise on subsequent energy intake, sensation of hunger, appetite and satiety in sarcopenic older men...
December 19, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29251686/nil-whey-protein-effect-on-glycemic-control-after-intense-mixed-mode-training-in-type-2-diabetes
#16
Kim Alexander Gaffney, Adam Lucero, Lee Stoner, James Faulkner, Patricia Whitfield, Jeremy Krebs, David Stephen Rowlands
Although intense endurance and resistance exercise training and whey protein supplementation have both been shown to independently improve glycemic control, no known studies have examined the effect of high-intensity mixed-mode interval training (MMIT) and whey supplementation in adults with Type 2 diabetes (T2D). PURPOSE: This study aimed to determine if peritraining whey protein supplementation combined with MMIT can improve glycemic control. METHODS: In a double-blind, randomized, placebo-controlled trial, 24 men (55...
January 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29234478/fructose-ingestion-impairs-expression-of-genes-involved-in-skeletal-muscle-s-adaptive-response-to-aerobic-exercise
#17
Natalia Gomes Gonçalves, Stephanie Heffer Cavaletti, Carlos Augusto Pasqualucci, Milton Arruda Martins, Chin Jia Lin
Background: The inverse relationship between exercise capacity and its variation over time and both cardiovascular and all-cause mortality suggests the existence of an etiological nexus between cardiometabolic diseases and the molecular regulators of exercise capacity. Coordinated adaptive responses elicited by physical training enhance exercise performance and metabolic efficiency and possibly mediate the health benefits of physical exercise. In contrast, impaired expression of genes involved in mitochondrial biogenesis or protein turnover in skeletal muscle-key biological processes involved in adaptation to physical training-leads to insulin resistance and obesity...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/29232264/fish-oil-derived-n-3-polyunsaturated-fatty-acids-for-the-prevention-and-treatment-of-sarcopenia
#18
Stuart R Gray, Bettina Mittendorfer
PURPOSE OF REVIEW: Muscle mass and function decline progressively starting in middle age, which can result in sarcopenia and affect people's mobility and independence later in life. Exercise training and increased protein intake are typically recommended to counteract the age-associated decline in muscle mass and function. However, few people comply with exercise recommendations and the effectiveness of high-protein intake to halt the decline in muscle mass and function has not been proven...
December 9, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/29225319/effects-of-aerobic-exercise-combined-with-panaxatriol-derived-from-ginseng-on-insulin-resistance-and-skeletal-muscle-mass-in-type-2-diabetic-mice
#19
Yusuke Takamura, Mitsuru Nomura, Akira Uchiyama, Satoshi Fujita
Insulin resistance reduces insulin-induced muscle protein synthesis and accelerates muscle protein degradation. Ginseng ingestion has been reported to improve insulin resistance through the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway. We hypothesized that panaxatriol (PT) derived from ginseng in combination with aerobic exercise (EX) may further promote protein synthesis and suppress protein degradation, and subsequently maintain muscle mass through the amelioration of insulin resistance. KKAy insulin-resistant mice were divided into control, panaxatriol only (PT), exercise only (EX), and EX+PT groups...
2017: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/29220580/the-influence-of-adiposity-and-acute-exercise-on-circulating-hepatokines-in-normal-weight-and-overweight-obese-men
#20
Jack A Sargeant, Guruprasad P Aithal, Toshinari Takamura, Hirofumi Misu, Hiroaki Takayama, Jessica A Douglas, Mark C Turner, David J Stensel, Myra A Nimmo, David R Webb, Thomas Yates, James A King
Hepatokines are liver-secreted proteins with potential to influence glucose regulation and other metabolic parameters. This study investigated differences in adiposity status on five novel hepatokines and characterised their response to acute moderate-intensity exercise in groups of normal weight and overweight/obese men. Twenty-two men were recruited into normal weight and overweight/obese groups (BMI: 18.5 to 24.9 and 25.0 to 34.9 kg∙m<sup>-2</sup>). Each completed two experimental trials, exercise and control...
December 8, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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