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https://www.readbyqxmd.com/read/28642676/international-society-of-sports-nutrition-position-stand-protein-and-exercise
#1
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/28639807/the-impact-of-time-and-repeated-exposure-on-famous-person-knowledge-in-amnestic-mild-cognitive-impairment-and-alzheimer-s-disease
#2
Sophie Benoit, Isabelle Rouleau, Roxane Langlois, Valérie Dostie, Marie-Jeanne Kergoat, Sven Joubert
OBJECTIVE: Famous people knowledge has been shown to be impaired early in Alzheimer's disease (AD) and amnestic mild cognitive impairment (aMCI). However, the question of whether recently acquired knowledge is more impaired than remotely acquired knowledge remains a matter of debate. The aim of this study was to investigate the patterns of semantic memory impairment in aMCI and AD by investigating 2 factors that may influence the retrieval of such knowledge, namely remoteness and frequency of repetition of information over time...
June 22, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28633669/impact-of-exercise-programs-among-helicopter-pilots-with-transient-lbp
#3
Knut Andersen, Roald Baardsen, Ingvild Dalen, Jan Petter Larsen
BACKGROUND: Flight related low back pain (LBP) among helicopter pilots is frequent and may influence flight performance. Prolonged confined sitting during flights seems to weaken lumbar trunk (LT) muscles with associated secondary transient pain. Aim of the study was to investigate if structured training could improve muscular function and thus improve LBP related to flying. METHODS: 39 helicopter pilots (35 men and 4 women), who reported flying related LBP on at least 1 of 3 missions last month, were allocated to two training programs over a 3-month period...
June 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28633047/the-impacts-of-the-global-financial-crisis-on-hospitalizations-due-to-depressive-illnesses-in-taiwan-a-prospective-nationwide-population-based-study
#4
Chiachi Bonnie Lee, Chen-Mao Liao, Chih-Ming Lin
BACKGROUND: In the third quarter of 2008, a major financial crisis hit many developed countries. Taiwan suffered its own share: a rise in unemployment and a severe decline in gross domestic product. This study is to address the health consequences of this crisis on different socioeconomic populations in Taiwan. METHODS: A sample of 6,225,766 men and 5,417,651 women, was obtained and their admissions data over 2007-2012 were retrieved. Stratified into three income levels, the sample was examined on the 147,921 episodes of hospitalization due to depressive illnesses (DIs) over that period by an interrupted time series analysis for monthly incidence rates of DI hospitalizations RESULTS: The adjusted incidence rates of hospitalization (AIRH) for DIs among the low income were 10 times that of the high income group...
June 15, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28631582/effect-of-green-tea-extract-supplementation-on-glycogen-replenishment-in-exercised-human-skeletal-muscle
#5
Tsen-Wei Tsai, Chia-Chen Chang, Su-Fen Liao, Yi-Hung Liao, Chien-Wen Hou, Jung-Piao Tsao, I-Shiung Cheng
The purpose of this study was to investigate the effects of 8-week green tea extract (GTE) supplementation on promoting postexercise muscle glycogen resynthesis and systemic energy substrate utilisation in young college students. A total of eight healthy male participants (age: 22·0 (se 1·0) years, BMI: 24·2 (se 0·7) kg/m2, VO2max: 43·2 (se 2·4) ml/kg per min) participated in this study. GTE (500 mg/d for 8 weeks) was compared with placebo in participants in a double-blind/placebo-controlled and crossover study design with an 8-week washout period...
June 20, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28628396/differential-in-maximal-aerobic-capacity-by-sex-in-collegiate-endurance-athletes-consuming-a-marginally-low-carbohydrate-diet
#6
Marissa N Baranauskas, Brian Miller, Jordan T Olson, Michelle Boltz, Laura Richardson, Matthew Juravich, Ronald Otterstetter
PURPOSE: Although current sports nutrition recommendations advocate for a high carbohydrate (CHO) intake among endurance athletes, recent research has suggested that training with low CHO availability may augment adaptations to aerobic training. The purpose of this study was to observe the dietary habits of collegiate distance runners and to investigate the effects of habitual CHO intake on aerobic performance [VO2max(post)] during a competitive season. METHODS: During an 8-week trial period, 12 (N = 12) collegiate track athletes recorded their self-selected dietary intake via 24-hour recall...
June 19, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28627298/a-prospective-transcranial-doppler-ultrasound-based-evaluation-of-the-acute-and-cumulative-effects-of-sport-related-concussion-on-neurovascular-coupling-response-dynamics
#7
Alexander D Wright, Jonathan D Smirl, Kelsey Bryk, Paul van Donkelaar
Sport-related concussion has been shown to alter cerebral blood flow (CBF) both acutely and chronically, and may exert cumulative effects across multiple injuries. Such dysfunction may be mediated by trauma-induced deficits to CBF control mechanisms, though our understanding of these effects is limited, including dynamics of neurovascular coupling (NVC) responses (i.e. CBF responses to neurologic demand). 179 junior-level contact sport athletes completed preseason testing - 42 reported never having experienced a concussion (Hx-) while 31 had endured three or more (Hx3+)...
June 18, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28625192/prolonged-birth-intervals-in-hamedan-iran-variations-and-determinants
#8
Amir Erfani, Marzieh Nojomi, Hatam Hosseini
The enduring sub-replacement level of fertility in Iran is the result of changing timing of births. Using data from the 2015 Hamedan Survey of Fertility, conducted in a representative sample of 3000 married women aged 15-49, this study examined variations in median lengths of birth intervals employing cumulative survival functions, and investigated the determinants of birth interval lengths using regression hazard models. The results showed that the median first, second and third birth intervals, estimated at 28, 74 and 136 months respectively, doubled between 1995 and 2015...
June 19, 2017: Journal of Biosocial Science
https://www.readbyqxmd.com/read/28620483/utilisation-of-supplemented-l-carnitine-for-fuel-efficiency-as-an-antioxidant-and-for-muscle-recovery-in-labrador-retrievers
#9
Jessica L Varney, J W Fowler, W C Gilbert, C N Coon
The primary goal was to investigate the effects of l-carnitine on fuel efficiency, as an antioxidant, and for muscle recovery in Labrador retrievers. Dogs were split into two groups, with one group being supplemented with 250 mg/d of Carniking™ l-carnitine powder. Two experiments (Expt 1 and Expt 2) were performed over a 2-year period which included running programmes, activity monitoring, body composition scans and evaluation of recovery using biomarkers. Each experiment differed slightly in dog number and design: fifty-six v...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/28620308/the-effect-of-interdialytic-combined-resistance-and-aerobic-exercise-training-on-health-related-outcomes-in-chronic-hemodialysis-patients-the-tunisian-randomized-controlled-study
#10
Bechir Frih, Hamdi Jaafar, Wajdi Mkacher, Zohra Ben Salah, Mohamed Hammami, Ameur Frih
Background: Tunisia has the highest prevalence of hemodialysis patients compared to the other countries in North Africa. Dialysis centers rarely offer an exercise program to prevent physiological and psychological dialysis therapy-related alterations in chronic hemodialysis patients. Aim: To examine the effect of combined endurance-resistance training program on physiological and psychological outcomes in patients undergoing hemodialysis. Methods: We designed a single blinded, randomized, controlled study for a period of 4 months...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28619944/early-life-stress-confers-lifelong-stress-susceptibility-in-mice-via-ventral-tegmental-area-otx2
#11
Catherine J Peña, Hope G Kronman, Deena M Walker, Hannah M Cates, Rosemary C Bagot, Immanuel Purushothaman, Orna Issler, Yong-Hwee Eddie Loh, Tin Leong, Drew D Kiraly, Emma Goodman, Rachael L Neve, Li Shen, Eric J Nestler
Early life stress increases risk for depression. Here we establish a "two-hit" stress model in mice wherein stress at a specific postnatal period increases susceptibility to adult social defeat stress and causes long-lasting transcriptional alterations that prime the ventral tegmental area (VTA)-a brain reward region-to be in a depression-like state. We identify a role for the developmental transcription factor orthodenticle homeobox 2 (Otx2) as an upstream mediator of these enduring effects. Transient juvenile-but not adult-knockdown of Otx2 in VTA mimics early life stress by increasing stress susceptibility, whereas its overexpression reverses the effects of early life stress...
June 16, 2017: Science
https://www.readbyqxmd.com/read/28619429/vitamin-d-and-multiple-sclerosis-an-update
#12
REVIEW
Charles Pierrot-Deseilligny, Jean-Claude Souberbielle
The most recent findings linking exposure to sun and vitamin D insufficiency to multiple sclerosis (MS) are reviewed. Due to insufficient sunshine and changing lifestyles, hypovitaminosis D is widespread in temperate countries. Numerous epidemiological studies have strongly suggested that sunshine and vitamin D insufficiency contributes to MS risk in these countries. Moreover, several large genetic studies in MS patients have recently stated unequivocally that diverse abnormalities involving vitamin D metabolism are related to the risk of the disease...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28617846/a-metabolite-of-leucine-%C3%AE-hydroxy-%C3%AE-methylbutyrate-given-to-sows-during-pregnancy-alters-bone-development-of-their-newborn-offspring-by-hormonal-modulation
#13
Tomasz Blicharski, Ewa Tomaszewska, Piotr Dobrowolski, Monika Hułas-Stasiak, Siemowit Muszyński
The effects of dietary β-hydroxy-β-methylbutyrate (HMB) supplementation during gestation on bone, growth plate, and articular cartilage in newborns were determined. Thermal analysis of articular cartilage was performed to examine the structural changes in collagen. At day 70 of gestation, a total of 12 sows (Large White Polish breed, at the second parity) were randomly assigned to two groups, with each group receiving either a basal diet or the same diet supplemented with 0.2 g/day HMB until the 90th day...
2017: PloS One
https://www.readbyqxmd.com/read/28615010/internet-based-perioperative-exercise-program-in-patients-with-barrett-s-carcinoma-scheduled-for-esophagectomy-ipep-study-a-prospective-randomized-controlled-trial
#14
Daniel Pfirrmann, Suzan Tug, Oana Brosteanu, Matthias Mehdorn, Martin Busse, Peter P Grimminger, Florian Lordick, Torben Glatz, Jens Hoeppner, Hauke Lang, Perikles Simon, Ines Gockel
BACKGROUND: Patients undergoing surgery for esophageal cancer have a high risk for postoperative deterioration of lung function and pulmonary complications. This is partly due to one-lung ventilation during thoracotomy. This often accounts for prolonged stay on intensive care units, delayed postoperative reconvalescence and reduced quality of life. Socioeconomic disadvantages can result from these problems. Physical preconditioning has become a crucial leverage to optimize fitness and lung function in patients scheduled for esophagectomy, in particular during the time period of neoadjuvant therapy...
June 14, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28615006/brief-temperature-stress-during-reproductive-stages-alters-meiotic-recombination-and-somatic-mutation-rates-in-the-progeny-of-arabidopsis
#15
Ramswaroop Saini, Amit Kumar Singh, Shanmuhapreya Dhanapal, Thoufeequl Hakeem Saeed, Geoffrey J Hyde, Ramamurthy Baskar
BACKGROUND: Plants exposed to environmental stresses draw upon many genetic and epigenetic strategies, with the former sometimes modulated by the latter. This can help the plant, and its immediate progeny, at least, to better endure the stress. Some evidence has led to proposals that (epi) genetic changes can be both selective and sustainably heritable, while other evidence suggests that changes are effectively stochastic, and important only because they induce genetic variation. One type of stress with an arguably high level of stochasticity in its effects is temperature stress...
June 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28605253/pre-cooling-with-crushed-ice-is-as-effective-as-heat-acclimation-at-improving-cycling-time-trial-performance-in-the-heat
#16
Matthew Zimmermann, Grant J Landers, Karen E Wallman, Georgina Kent
This study compared pre-cooling (ice ingestion) with heat acclimation training on cycling time trial (CTT) performance in the heat. Fifteen male cyclists/triathletes completed two 800 kJ cycle time trials in the heat, with a 12-day training program in between. Initially, all participants consumed 7 g·kg(-1) of water (22°C) in 30 min, prior to completing an 800 kJ CTT in hot, humid conditions (pre-CTT) (35°C, 50% relative humidity; RH). Participants were then split into two groups, pre-cooling (n=7): trained in thermoneutral conditions then underwent pre-cooling with ice ingestion (7 g·kg(-1),1°C) prior to the final CTT (post-CTT), heat acclimation (n=8): trained in hot conditions (35°C, 50% RH) and consumed water (7 g·kg(-1)) prior to post-CTT...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28605250/exercise-for-bone-in-childhood-hitting-the-sweet-spot
#17
Belinda R Beck
PURPOSE: The goal of the current work is to challenge the enduring notion that pre-puberty is the optimum timing for maximum bone response to exercise in childhood, and to present the evidence that early puberty is a more a potently receptive period. METHOD: The relevant literature is reviewed and the causes of the misconception addressed in detail. RESULTS: Contrary to prevailing opinion, ample evidence exists to suggest the peri-pubertal years represent the developmental period during which bone is likely to respond most robustly to exercise intervention...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28601950/increase-in-carbon-dioxide-accelerates-the-performance-of-endurance-exercise-in-rats
#18
Takeshi Ueha, Keisuke Oe, Masahiko Miwa, Takumi Hasegawa, Akihiro Koh, Hanako Nishimoto, Sang Yang Lee, Takahiro Niikura, Masahiro Kurosaka, Ryosuke Kuroda, Yoshitada Sakai
Endurance exercise generates CO2 via aerobic metabolism; however, its role remains unclear. Exogenous CO2 by transcutaneous delivery promotes muscle fibre-type switching to increase endurance power in skeletal muscles. Here we determined the performance of rats running in activity wheels with/without transcutaneous CO2 exposure to clarify its effect on endurance exercise and recovery from muscle fatigue. Rats were randomised to control, training and CO2 groups. Endurance exercise included activity-wheel running with/without transcutaneous CO2 delivery...
June 10, 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/28597506/skeletal-myofiber-vegf-is-required-for-the-exercise-training-induced-increase-in-dentate-gyrus-neuronal-precursor-cells
#19
Benjamin Rich, Miriam Scadeng, M Yamaguchi, Peter D Wagner, Ellen C Breen
Exercise signals neurogenesis in the dentate gyrus of the hippocampus. This phenomenon requires vascular endothelial growth factor (VEGF) originating from outside the blood brain barrier, but no cellular source has been identified. Thus, we hypothesized that VEGF produced by skeletal myofibers plays a role in regulating hippocampal neuronal precursor cell proliferation following exercise training. This was tested in adult conditional skeletal myofiber-specific VEGF gene-ablated mice (VEGF(HSA-/-) ) by providing VEGF(HSA-/-) and non-ablated (VEGF(f/f) ) littermates with running wheels for 14 days...
June 9, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28594808/-risk-factors-for-progression-of-atherosclerosis-of-the-shunted-coronary-artery-in-the-remote-postoperative-period
#20
V V Bazylev, E V Nemchenko, A A Pavlov, A I Mikuliak, V A Karnakhin
The study was aimed at revealing risk factors for progression of atherosclerosis in the shunted coronary artery in the remote period following coronary artery bypass grafting. Our prospective study included a total of 292 patients having endured coronary artery bypass grafting. All patients were divided in two groups depending on the type of the bypass grafts used: either autoarterial shunts (Group 1) or autovenous grafts (Group 2). We thus assessed a total of 516 autoarterial grafts and 257 autovenous grafts, as well as the coronary arteries shunted thereby...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
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