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https://www.readbyqxmd.com/read/28212449/energy-intake-and-energy-expenditure-of-pre-professional-female-contemporary-dancers
#1
Meghan A Brown, Glyn Howatson, Edel Quin, Emma Redding, Emma J Stevenson
Many athletes in aesthetic and weight dependent sports are at risk of energy imbalance. However little is known about the exercise and eating behaviours of highly trained dance populations. This investigation sought to determine the energy intake and energy expenditure of pre-professional female contemporary dancers. Twenty-five female contemporary dance students completed the study. Over a 7-day period, including five week days (with scheduled dance training at a conservatoire) and two weekend days (with no scheduled dance training at the conservatoire), energy intake (self-reported weighed food diary and 24 h dietary recall) and expenditure (tri-axial accelerometry) were recorded...
2017: PloS One
https://www.readbyqxmd.com/read/28209386/dietary-therapy-in-heart-failure-with-preserved-ejection-fraction-and-or-left-ventricular-diastolic-dysfunction-in-patients-with-metabolic-syndrome
#2
REVIEW
Helene von Bibra, Alexander Ströhle, Martin St John Sutton, Nicolai Worm
BACKGROUND: Heart failure is an ongoing epidemic of left ventricular (LV) dilatation and/or dysfunction due to the increasing prevalence of predisposing risk factors such as age, physical inactivity, (abdominal) obesity, and type-2-diabetes. Approximately half of these patients have diastolic heart failure (HFpEF). The prognosis of HFpEF is comparable to that of systolic heart failure, but without any known effective treatment. DIASTOLIC DYSFUNCTION: A biomathematically corrected diagnostic approach is presented that quantifies diastolic dysfunction via the predominant age dependency of LV diastolic function and unmasks (metabolic) risk factors, that are independent of age and, therefore, potential targets for therapy...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28208581/macronutrient-intakes-in-553-dutch-elite-and-sub-elite-endurance-team-and-strength-athletes-does-intake-differ-between-sport-disciplines
#3
Floris Wardenaar, Naomi Brinkmans, Ingrid Ceelen, Bo Van Rooij, Marco Mensink, Renger Witkamp, Jeanne De Vries
Web-based 24-h dietary recalls and questionnaires were obtained from 553 Dutch well-trained athletes. The total energy and macronutrient intake was compared between discipline-categories (endurance, team, and strength) within gender, and dietary inadequacy, i.e., too low or high intakes, according to selected recommendations and guidelines, was evaluated by applying a probability approach. On average, 2.83 days per person were reported with a mean energy intake of 2566-2985 kcal and 1997-2457 kcal per day, for men and women, respectively...
February 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28204901/the-effect-of-hydration-status-on-the-measurement-of-lean-tissue-mass-by-dual-energy-x-ray-absorptiometry
#4
Clodagh M Toomey, William G McCormack, Phil Jakeman
PURPOSE: Athletes cycle between exercise and recovery. Exercise invokes changes in total body water from thermal sweating, muscle and hepatic glycogen depletion and metabolic water loss. Recovery from exercise results in rehydration, substrate repletion, and possible glycogen supercompensation. Such changes may corrupt the measurement of hydrated tissues, such as lean tissue mass (LTM), by dual-energy X-ray absorptiometry (DXA). The purpose of this study was to determine the effect of exercise and thermal dehydration and subsequent glycogen supercompensation on DXA-based measurement of body composition...
February 16, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28199799/the-efficacy-of-protein-supplementation-during-recovery-from-muscle-damaging-concurrent-exercise
#5
Lee Eddens, Sarah Browne, Emma J Stevenson, Brad Sanderson, Ken van Someren, Glyn Howatson
This study investigated the effect of protein supplementation on recovery following muscle-damaging exercise, which was induced with a concurrent exercise design. Twenty-four well-trained male cyclists were randomised to three independent groups receiving 20 g protein hydrolysate, iso-caloric carbohydrate or low-calorific placebo supplementation, per serve. Supplement serves were provided twice daily, from the onset of the muscle-damaging exercise, for a total of four days and in addition to a controlled diet (6 g•kg<sup>-1</sup>•d<sup>-1</sup> carbohydrate, 1...
February 15, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28199417/physical-activity-prevents-alterations-in-mitochondrial-ultrastructure-and-glucometabolic-parameters-in-a-high-sugar-diet-model
#6
Karina Barbosa de Queiroz, Kinulpe Honorato-Sampaio, Joamyr Victor Rossoni Júnior, Diego Andrade Leal, Angélica Barbosa G Pinto, Lenice Kappes-Becker, Elisio Alberto Evangelista, Renata Guerra-Sá
Endurance exercise is a remarkable intervention for the treatment of many diseases. Mitochondrial changes on skeletal muscle are likely important for many of the benefits provided by exercise. In this study, we aimed to evaluate the effects that a regular physical activity (swimming without workload) has on mitochondrial morphological alterations and glucometabolic parameters induced by a high-sugar diet (HSD). Weaned male Wistar rats fed with a standard diet or a HSD (68% carbohydrate) were subjected to 60 minutes of regular physical activity by swimming (without workload) for four- (20 sessions) or eight-week (40 sessions) periods...
2017: PloS One
https://www.readbyqxmd.com/read/28197890/relationships-among-diet-physical-activity-and-dual-plane-dual-energy-x-ray-absorptiometry-bone-outcomes-in-pre-pubertalgirls
#7
Jie Ren, Lynn S Brann, Kay S Bruening, Tamara A Scerpella, Jodi N Dowthwaite
: In pre-pubertal girls, nutrient intakes and non-aquatic organized activity were evaluated as factors in vertebral body bone mass, structure, and strength. Activity, vitamin B12, and dietary fiber predicted bone outcomes most consistently. Exercise and vitamin B12 appear beneficial, whereas high fiber intake appears to be adverse for vertebral body development. PURPOSE: Childhood development sets the baseline for adult fracture risk. Most studies evaluate development using postero-anterior (PA) dual-energy X-ray absorptiometry (DXA) areal bone mineral density, bone mineral content, and bone mineral apparent density...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28190645/pgm1-deficiency-substrate-use-during-exercise-and-effect-of-treatment-with-galactose
#8
N C Voermans, N Preisler, K L Madsen, M C H Janssen, B Kusters, N Abu Bakar, F Conte, V M L Lamberti, F Nusman, B G van Engelen, M van Scherpenzeel, J Vissing, D J Lefeber
Mutations in PGM1 (phosphoglucomutase 1) cause Glycogen Storage Disease type XIV, which is also a congenital disorder of protein N-glycosylation. It presents throughout life as myopathy with additional systemic symptoms. We report the effect of oral galactose treatment during five months in a patient with biochemically and genetically confirmed PGM1 deficiency. The 12-minute-walking distance increased by 225 m (65%) and transferrin glycosylation was restored to near-normal levels. The exercise assessments showed a severe exercise intolerance due to a block in skeletal muscle glycogenolytic capacity and that galactose treatment tended to normalize skeletal muscle substrate use from fat to carbohydrates during exercise...
January 19, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28183444/effects-of-lifestyle-interventions-on-clinical-characteristics-of-patients-with-non-alcoholic-fatty-liver-disease-a-meta-analysis
#9
Christina N Katsagoni, Michael Georgoulis, George V Papatheodoridis, Demosthenes B Panagiotakos, Meropi D Kontogianni
BACKGROUND/OBJECTIVES: Although lifestyle modifications remain the cornerstone therapy for non-alcoholic fatty liver disease (NAFLD), the optimal lifestyle intervention is still controversial. The aim of this meta-analysis was to evaluate the effect of exercise and/or dietary interventions, type or intensity of exercise and type of diet, on liver function outcomes (liver enzymes, intrahepatic fat and liver histology), as well as on anthropometric and glucose metabolism parameters in NAFLD patients...
March 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28183441/similar-metabolic-response-to-lower-versus-upper-body-interval-exercise-or-endurance-exercise
#10
Monique E Francois, Matthew J Graham, Evelyn B Parr, Nancy J Rehrer, Samuel J E Lucas, Stasinos Stavrianeas, James D Cotter
PURPOSE: To compare energy use and substrate partitioning arising from repeated lower- versus upper-body sprints, or endurance exercise, across a 24-h period. METHODS: Twelve untrained males (24±4 y) completed three trials in randomized order: (1) repeated sprints (five 30-s Wingate, 4.5-min recovery) on a cycle ergometer (SITLegs); (2) 50-min continuous cycling at 65% V̇O2max (END); (3) repeated sprints on an arm-crank ergometer (SITArms). Respiratory gas exchange was assessed before and during exercise, and at eight points across 22h of recovery...
March 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28182508/effects-of-carbohydrate-ingestion-and-carbohydrate-mouth-rinse-on-repeat-sprint-performance
#11
Ben M Krings, Timothy J Peterson, Brandon D Shepherd, Matthew J McAllister, JohnEric W Smith
The purpose of this investigation was to examine to the influence of carbohydrate ingestion (CHOI) and carbohydrate mouth rinse (CHOR) on acute repeat maximal sprint performance. Fourteen healthy males (age: 21.7 ± 1.8 years, mass: 82.3 ± 12.3 kg) completed a total of five 15-second maximal repeat sprints on a cycle ergometer against 0.075 kg . kg(-1) body mass each separated by four minutes of active recovery. Subjects completed four experimental trials and were randomly assigned one of four treatments: (1) CHOI, (2) CHOR, (3) placebo mouth rinse (PLAR), (4) placebo ingestion (PLAI)...
February 9, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28181776/cardiovascular-adjustments-to-heat-stress-during-prolonged-exercise
#12
Luna Rizzo, Martin W Thompson
Prolonged effort in hot environments is increasing popular in extreme sports. The number of long distance athletes taking part in races in extremely warm condition, as in deserts, is larger than in the past and also the race distances are increased thus. The demanding for the heart function are higher than those challenged in the past only by few athletes and in easier conditions. This puts news challenges on the professional involved in these activities and there is a need to better understand how the cardiocirculatory system responses in these extreme environmental conditions...
February 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28177715/gut-training-the-impact-of-two-weeks-repetitive-gut-challenge-during-exercise-on-gastrointestinal-status-glucose-availability-fuel-kinetics-and-running-performance
#13
Ricardo J S Costa, Atlanta Miall, Anthony Khoo, Christopher Rauch, Rhiannon Snipe, Vera Camões-Costa, Peter Gibson
BACKGROUND: Due to gastrointestinal tract adaptability, the study aimed to determine the impact of two weeks gut-training protocol over two weeks on gastrointestinal status, blood glucose availability, fuel kinetics, and running performance. METHODS: Endurance runners (n= 25) performed a gut-challenge trial (GC1), comprising of 2 h running exercise at 60% VO2max whilst consuming gel-discs containing 30 g carbohydrates (2:1 glucose-fructose, 10% w/v) every 20 min, and a 1 h distance test...
January 19, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28153654/reduction-of-total-labour-length-through-the-addition-of-parenteral-dextrose-solution-in-induction-of-labor-in-nulliparous-results-of-dextrons-prospective-randomized-controlled-trial
#14
Josianne Paré, Jean-Charles Pasquier, Antoine Lewin, William Fraser, Yves-André Bureau
BACKGROUND: Prolonged labor is a significant cause of maternal and fetal morbidity and very few interventions are known to shorten labor course. Skeletal muscle physiology suggests that glucose supplementation might improve muscle performance in case of prolonged exercise and this situation is analogous to the gravid uterus during delivery. Therefore, it seemed imperative to evaluate the impact of adding carbohydrate supplements on the course of labor. OBJECTIVE(S): To provide evidence as to whether IV glucose supplementation during labor induction in nulliparous women can reduce total duration of active labor...
January 28, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28150478/effects-of-silk-peptides-administration-on-fat-utilization-over-a-whole-day-in-mice
#15
Jisu Kim, Jonghoon Park, Bokyung Kim, Chi-Ho Lee, Kiwon Lim
Purpose: The aim of the present narrative review was to consider the evidence on the timing, optimal dose and intake duration of the main dietary supplements β-alanine, nitrate, caffeine, creatine, sodium bicarbonate, carbohydrate and protein. Methods: This review article will focuses on timing, optimal dose and intake duration of main dietary supplements for consuming. Results: This paper reviewed the evidence to determine the optimal time, efficacy doses and intake duration for sports supplements verified by scientific evidence that report a performance enhancing effect in both situation of laboratory and training settings...
December 31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28150472/timing-optimal-dose-and-intake-duration-of-dietary-supplements-with-evidence-based-use-in-sports-nutrition
#16
REVIEW
Alireza Naderi, Erick P de Oliveira, Tim N Ziegenfuss, Mark E T Willems
Purpose: The aim of the present narrative review was to consider the evidence on the timing, optimal dose and intake duration of the main dietary supplements β-alanine, nitrate, caffeine, creatine, sodium bicarbonate, carbohydrate and protein. Methods: This review article will focuses on timing, optimal dose and intake duration of main dietary supplements for consuming. Results: This paper reviewed the evidence to determine the optimal time, efficacy doses and intake duration for sports supplements verified by scientific evidence that report a performance enhancing effect in both situation of laboratory and training settings...
31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28143855/-nutraceuticals-in-relation-to-human-skeletal-muscle-and-exercise
#17
Colleen Siobhan Deane, Daniel J Wilkinson, Bethan E Phillips, Kenneth Smith, Timothy Etheridge, Philip J Atherton
Skeletal muscles have a fundamental role in locomotion and whole body metabolism, with muscle mass and quality being linked to improved health and even lifespan. Optimising nutrition in combination with exercise is considered an established, effective ergogenic practice for athletic performance. Importantly, exercise and nutritional approaches also remain arguably the most effective countermeasure for muscle dysfunction associated with ageing and numerous clinical conditions e.g. cancer cachexia, COPD and organ failure, via engendering favourable adaptations such as increased muscle mass and oxidative capacity...
January 31, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28138315/effect-of-mouth-rinsing-and-ingestion-of-carbohydrate-solutions-on-mood-and-perceptual-responses-during-exercise
#18
Ajmol Ali, Catherine Moss, Michelle Ji Yeon Yoo, Alanah Wilkinson, Bernhard H Breier
BACKGROUND: The aim of this study was to investigate whether mouth rinsing or ingesting carbohydrate (CHO) solutions impact on perceptual responses during exercise. METHODS: Nine moderately trained male cyclists underwent a 90-min glycogen-reducing exercise, and consumed a low CHO meal, prior to completing an overnight fast. A 1-h cycle time trial was performed the following morning. Four trials, each separated by 7 days, were conducted in a randomized, counterbalanced study design: 15% CHO mouth rinse (CHOR), 7...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28126906/optimizing-the-restoration-and-maintenance-of-fluid-balance-after-exercise-induced-dehydration
#19
Gethin Hywel Evans, Lewis John James, Susan Margaret Shirreffs, Ronald J Maughan
Hypohydration, or a body water deficit, is a common occurrence in athletes and recreational exercisers following the completion of an exercise session. For those who will undertake a further exercise session that day, it is important to replace water losses to avoid beginning the next exercise session hypohydrated and the potential detrimental effects on performance that this may lead to. The aim of this review is to provide an overview of the research related to factors that may affect post-exercise rehydration...
January 26, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28121797/the-effect-of-postexercise-carbohydrate-and-protein-ingestion-on-bone-metabolism
#20
Rebecca Townsend, Kirsty J Elliott-Sale, Kevin Currell, Jonathan Tang, William D Fraser, Craig Sale
PURPOSE: To investigate the effect of feeding carbohydrate and protein (CHO+PRO), immediately or 2 h after an exhaustive run, on the bone turnover response in endurance runners. METHODS: 10 men (age 28±5 y, height 1.74±0.05 m, body mass 69.7±6.3 kg) performed treadmill running at 75%VO2max, until exhaustion, on three occasions. Blood was collected before and immediately, 1, 2, 3, 4 and 24 h post-exercise, for measurement of β-CTX, P1NP, PTH, PO4, ACa and Ca...
January 24, 2017: Medicine and Science in Sports and Exercise
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