Assessment of physical demands and fluid balance in elite female handball players during a 6-day competitive tournament.

abstract：:Opuntia ficus indica (OFI) has many physiological effects, but a relationship between OFI and heart-rate variability (HRV) has never been established. The aim of this study was to describe the effects of a diet supplement of OFI on HRV in athletes. The first day, heart rate (HR) was measured at rest in supine (SU) and...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Schmitt L,Fouillot JP,Nicolet G,Midol A

更新日期：2008-04-01 00:00:00

abstract：:The aim of the present study was to investigate the effect of vitamin C with or without carbohydrate consumed acutely in beverages before and during prolonged cycling on immunoendocrine responses. In a single blind, randomized manner six healthy, moderately trained males exercised for 2.5 h at 60% VO(2max)and consumed...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Davison G,Gleeson M

更新日期：2005-10-01 00:00:00

abstract：:This study systematically examined the influence of carbohydrate (sucrose), sodium, and caffeine on the fluid retention potential of beverages under euhydrated conditions, using the beverage hydration index method. Three cohorts, each of 12 young, healthy, active men, ingested 1 L of beverages containing four differen...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Maughan RJ,Watson P,Cordery PAA,Walsh NP,Oliver SJ,Dolci A,Rodriguez-Sanchez N,Galloway SDR

更新日期：2018-10-15 00:00:00

abstract：:The purpose of this study was to examine the prevalence of disordered eating (DE), menstrual dysfunction (MD), and low bone mineral density (BMD) among US collegiate athletes (n = 112) representing 7 different sports (diving, swimming, x-country, track, tennis, field hockey, and softball) and determine differences in ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Beals KA,Hill AK

更新日期：2006-02-01 00:00:00

abstract：:Prior to presentation, two physically fit adults, a 39-year-old male and 40-year-old female, began supplementation with an over-the-counter thyroid preparation marketed as a metabolic accelerator and fat loss aid, tiratricol. Both participants took the supplement for 5 weeks (3000-4000 mcg/d) and 3 weeks (6000 mcg/d),...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Scally MC,Hodge A

更新日期：2003-03-01 00:00:00

abstract：:Loss of muscle mass, strength, and oxidative capacity accompanies normal aging in humans. The mechanisms responsible for these changes remain to be clearly defined. Muscle protein mass and function depend on protein turnover. Synthesis rate of the major muscle contractile protein, myosin heavy chain (MHC), and transcr...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Short KR,Nair KS

更新日期：2001-12-01 00:00:00

abstract：:Athletes competing in individual sports such as judo are categorized by weight. Before competitions, weight cutting is common. This cross-sectional study was designed to characterize and determine the prevalence of rapid weight loss (RWL) among adolescent judo competitors. Male athletes aged 12- to 17-years old (N = 1...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Berkovich BE,Eliakim A,Nemet D,Stark AH,Sinai T

更新日期：2016-06-01 00:00:00

abstract：:Omega-3 fatty acid (n-3 FA) supplementation could promote adaptation to soccer-specific training. We examined the impact of a 4-week period of n-3 FA supplementation during training on adaptations in 1RM knee extensor strength, 20-m sprint speed, vertical jump power, and anaerobic endurance capacity (Yo-Yo test) in co...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Gravina L,Brown FF,Alexander L,Dick J,Bell G,Witard OC,Galloway SDR

更新日期：2017-08-01 00:00:00

abstract：:Rugby union athletes have divergent body composition based on the demands of their on-field playing position and ethnicity. With an established association between physique traits and positional requirements, body composition assessment is routinely undertaken. Surface anthropometry and dual-energy X-ray absorptiometr...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Zemski AJ,Keating SE,Broad EM,Slater GJ

更新日期：2018-09-26 00:00:00

abstract：:Whenever athletes willfully or accidentally ingest performance-enhancing drugs or other banned substances (such as drugs of abuse), markers of those drugs can be detected in biological samples (e.g., biofluids: urine, saliva, blood); in the case of some drugs, that evidence can be apparent for many weeks following the...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Cadwallader AB,Murray B

更新日期：2015-08-01 00:00:00

abstract：:The authors compared the effectiveness of daily (DAY) versus alternate day (ALT) oral iron supplementation in athletes with suboptimal iron. Endurance-trained runners (nine males and 22 females), with serum ferritin (sFer) concentrations <50 μg/L, supplemented with oral iron either DAY or ALT for 8 weeks. Serum ferrit...

journal_title：International journal of sport nutrition and exercise metabolism

authors： McCormick R,Dreyer A,Dawson B,Sim M,Lester L,Goodman C,Peeling P

更新日期：2020-03-27 00:00:00

abstract：:This study characterized body composition profiles of elite American heptathletes and cross-validated skinfold (SKF) and bioelectrical impedance analysis (BIA) field method equations for estimation of percent body fat (%Fat) using dual energy x-ray absorptiometry (DXA) as the criterion. Weight, height, fat mass (FM), ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Houtkoopr L,Mullins VA,Going SB,Brown CH,Lohman TG

更新日期：2001-06-01 00:00:00

abstract：:Exercise has a profound effect on muscle growth, which can occur only if muscle protein synthesis exceeds muscle protein breakdown; there must be a positive muscle protein balance. Resistance exercise improves muscle protein balance, but, in the absence of food intake, the balance remains negative (i.e., catabolic). T...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Tipton KD,Wolfe RR

更新日期：2001-03-01 00:00:00

abstract：:We investigated the effects of vitamin D3 supplementation on physical performance during winter training in vitamin D insufficient taekwondo athletes. Thirty-five collegiate male and female taekwondo athletes, aged 19-22 years with low serum 25(OH)D concentration (28.8 ± 1.10 nmol/L), were randomly assigned to a vitam...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Jung HC,Seo MW,Lee S,Jung SW,Song JK

更新日期：2018-11-01 00:00:00

abstract：PURPOSE:The purpose of this study was to investigate the effect of acute and 4-week Rhodiola rosea intake on physical capacity, muscle strength, speed of limb movement, reaction time, and attention. METHODS: PHASE I:A double blind placebo-controlled randomized study (n= 24) was performed, consisting of 2 sessions (2 ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： De Bock K,Eijnde BO,Ramaekers M,Hespel P

更新日期：2004-06-01 00:00:00

abstract：PURPOSE:To investigate the effects of polysaccharide from Gynostemma pentaphyllum on antioxidant activity in skeletal muscle of mice exercised to exhaustion. METHODS:Three polysaccharide fractions were obtained from G. pentaphyllum polysaccharide (GPP) and termed GPP1-a, GPP2-b, and GPP3-a. Gas chromatography (GC) and...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Chi A,Tang L,Zhang J,Zhang K

更新日期：2012-12-01 00:00:00

abstract：OBJECTIVE:To examine the effects of resistance training on hematological and selected indices of iron status in 17 women aged 54-71 years and 18 men aged 56-69 years. DESIGN:Tests and evaluations were done before and after all subjects participated in a resistance-training program twice weekly for 12 weeks. RESULTS:T...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Murray-Kolb LE,Beard JL,Joseph LJ,Davey SL,Evans WJ,Campbell WW

更新日期：2001-09-01 00:00:00

abstract：:Endurance athletes commonly ingest caffeine as a means to enhance training intensity and competitive performance. A widely-used source of caffeine is coffee, however conflicting evidence exists regarding the efficacy of coffee in improving endurance performance. In this context, the aims of this evidence-based review ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Higgins S,Straight CR,Lewis RD

更新日期：2016-06-01 00:00:00

abstract：:This article describes the development, analysis, and implementation of the menu available to athletes and patrons in the main dining hall of the Athletes Village at the Sydney 2000 Olympic Games and the significant role of sports dietitians in this process. Menu design and development was informed by focus groups, li...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Pelly F,O'Connor H,Denyer G,Caterson I

更新日期：2009-08-01 00:00:00

abstract：INTRODUCTION:Supplementation with beta-alanine may have positive effects on severe-intensity, intermittent, and isometric strength-endurance performance. These could be advantageous for competitive alpine skiers, whose races last 45 to 150 s, require metabolic power above the aerobic maximum, and involve isometric musc...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Gross M,Bieri K,Hoppeler H,Norman B,Vogt M

更新日期：2014-12-01 00:00:00

abstract：:Vanadium compounds have been shown to have insulin-like properties in rats and non-insulin-dependent diabetic humans. The purpose of the present study was to examine whether the effects of acute and short-term administration of vanadyl sulfate (VA) on insulin sensitivity also exist in healthy active individuals. Five ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Jentjens RL,Jeukendrup AE

更新日期：2002-12-01 00:00:00

abstract：:The purpose of the current study was to evaluate changes in body composition, metabolic rate, and hormones during postcompetition recovery. Data were collected from natural physique athletes (7 male/8 female) within one week before (T1) competition, within one week after (T2), and 4-6 weeks after (T3) competition. Mea...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Trexler ET,Hirsch KR,Campbell BI,Smith-Ryan AE

更新日期：2017-10-01 00:00:00

abstract：:Agouti-related protein (AGRP) is an orexigenic peptide secreted from the arcuate nucleus (ARC) of the hypothalamus. AGRP increases food intake and plays a role in energy balance, adiposity, weight gain, and growth-hormone release. The objective of the current study was to examine the effects of running exercise on res...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Ghanbari-Niaki A,Fathi R,Kakhak SA,Farshidi Z,Barmaki S,Rahbarizadeh F,Kraemer RR

更新日期：2009-10-01 00:00:00

abstract：:This study examined the effects of carbohydrate (CHO), carbohydrate-protein (CHO+PRO), or placebo (PLA) beverages on recovery from novel eccentric exercise. Female participants performed 30 min of downhill treadmill running (-12% grade, 8.0 mph), followed by consumption of a CHO, CHO+PRO, or PLA beverage immediately, ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Green MS,Corona BT,Doyle JA,Ingalls CP

更新日期：2008-02-01 00:00:00

abstract：:This study investigated the effect of a fed or fasted state on the salivary immunoglobulin A (s-IgA) response to prolonged cycling. Using a randomized, crossover design, 16 active adults (8 men and 8 women) performed 2 hr of cycling on a stationary ergometer at 65% of maximal oxygen uptake on 1 occasion after an overn...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Allgrove JE,Geneen L,Latif S,Gleeson M

更新日期：2009-06-01 00:00:00

abstract：:It is the position of Sports Dietitians Australia (SDA) that adolescent athletes have unique nutritional requirements as a consequence of undertaking daily training and competition in addition to the demands of growth and development. As such, SDA established an expert multidisciplinary panel to undertake an independe...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Desbrow B,McCormack J,Burke LM,Cox GR,Fallon K,Hislop M,Logan R,Marino N,Sawyer SM,Shaw G,Star A,Vidgen H,Leveritt M

更新日期：2014-10-01 00:00:00

abstract：:In a randomized, placebo-controlled, double-blind crossover design, 15 trained males undertook exercise trials during two 4 wk supplementation periods, with either 3 g L-Carnitine L-tartrate (LCLT) or 3 g placebo (P) daily. Total carbohydrate and fat oxidation during 90 min steady state cycling were not different betw...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Broad EM,Maughan RJ,Galloway SD

更新日期：2005-12-01 00:00:00

abstract：:The aim of this study was to evaluate the food provision and nutrition support at the London 2012 Olympic (OG) and Paralympic Games (PG) from the perspective of sports nutrition experts attending the event. Participants (n = 15) were asked to complete an online survey and rate on a Likert scale menu qualities, food sa...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Pelly F,Meyer NL,Pearce J,Burkhart SJ,Burke LM

更新日期：2014-12-01 00:00:00

abstract：:We sought to assess the accuracy of current or developing new prediction equations for resting metabolic rate (RMR) in adolescent athletes. RMR was assessed via indirect calorimetry, alongside known predictors (body composition via dual-energy X-ray absorptiometry, height, age, and sex) and hypothesized predictors (ra...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Reale RJ,Roberts TJ,Lee KA,Bonsignore JL,Anderson ML

更新日期：2020-05-26 00:00:00

abstract：PURPOSE:The impact of mild hypohydration on physiological responses and cognitive performance following exercise-heat stress (EHS) were examined compared with conditions when fluids were ingested ad libitum (AL) or replaced to match sweat losses (FR). METHODS:Twelve unacclimatized, recreationally-active men (22.2 ± 2....

journal_title：International journal of sport nutrition and exercise metabolism

authors： Wittbrodt MT,Millard-Stafford M,Sherman RA,Cheatham CC

更新日期：2015-10-01 00:00:00