Bone-mineral density and other features of the female athlete triad in elite endurance runners: a longitudinal and cross-sectional observational study.

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：: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：BACKGROUND:Functional hypothalamic amenorrhea is common among female athletes and may be difficult to treat. Restoration of menses (ROM) is crucial to prevent deleterious effects to skeletal and reproductive health. OBJECTIVES:To determine the natural history of menstrual disturbances in female college athletes manage...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Arends JC,Cheung MY,Barrack MT,Nattiv A

更新日期：2012-04-01 00:00:00

abstract：: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 versus lower protein intakes in this population. This study examined the influence of a high ve...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Campbell BI,Aguilar D,Conlin L,Vargas A,Schoenfeld BJ,Corson A,Gai C,Best S,Galvan E,Couvillion K

更新日期：2018-11-01 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：:The potential for supplement use to result in doping infringements is likely to be of concern for anyone involved in sports nutrition. The available data indicates that between 40-70% of athletes use supplements, and that between 10-15% of supplements may contain prohibited substances. Such data indicates that there i...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Outram S,Stewart B

更新日期：2015-02-01 00:00:00

abstract：:The effects of acute ingestion of caffeine on short-duration high-intensity performance are equivocal, while studies of novel modes of delivery and the efficacy of low doses of caffeine are warranted. The aims of the present study were to investigate the effect of acute ingestion of caffeinated chewing gum on repeated...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Evans M,Tierney P,Gray N,Hawe G,Macken M,Egan B

更新日期：2018-05-01 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：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：:Inflammatory markers such as C-reactive protein (CRP), fibrinogen, and white-blood-cell (WBC) count are strongly associated with cardiovascular disease. The authors' purpose was to compare the inflammatory response to a single aerobic-exercise session between individuals of high and moderate fitness. Ten apparently he...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Plaisance EP,Taylor JK,Alhassan S,Abebe A,Mestek ML,Grandjean PW

更新日期：2007-04-01 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：:The purpose was to compare changes in lean tissue mass, strength, and myofibrillar protein catabolism resulting from combining whey protein or soy protein with resistance training. Twenty-seven untrained healthy subjects (18 female, 9 male) age 18 to 35 y were randomly assigned (double blind) to supplement with whey p...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Candow DG,Burke NC,Smith-Palmer T,Burke DG

更新日期：2006-06-01 00:00:00

abstract：:This study determined normative data for sweat rate (SR) and whole-body (WB) sweat sodium concentration [Na+] in athletes indigenous to a tropical climate, categorized by age, gender, and sport classification. We analyzed data from 556 athletes (386 adult and 170 young) in endurance (END), team/ball (TBA), and combat ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Rivera-Brown AM,Quiñones-González JR

更新日期：2020-05-25 00:00:00

abstract：:High-intensity intermittent exercise (HIIE) such as the 30-s Wingate test attenuates postprandial triacylglycerol (TG), however, the ability of shorter versions of HIIE to reduce postprandial TG is undetermined. Thus, the effect of 8-s sprinting bouts of HIIE on blood TG levels of 12 females after consumption of a hig...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Tan M,Chan Moy Fat R,Boutcher YN,Boutcher SH

更新日期：2014-02-01 00:00:00

abstract：:Assessment of physical activity in clinical bone studies is essential. Two bone-specific physical activity scoring methods, the Bone Loading History Questionnaire (BLHQ) and Bone-Specific Physical Activity Questionnaire (BPAQ), have shown correlations with bone density and geometry, but not architecture. The purpose o...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Kindler JM,Ross HL,Laing EM,Modlesky CM,Pollock NK,Baile CA,Lewis RD

更新日期：2015-04-01 00:00:00

abstract：:Recent studies have shown that neutrophils can utilize glutamine and that glutamine supplementation can improve neutrophil function in postoperative and burn patients. The present study investigated the influence of oral glutamine supplementation on stimulated neutrophil degranulation and oxidative burst activity foll...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Walsh NP,Blannin AK,Bishop NC,Robson PJ,Gleeson M

更新日期：2000-03-01 00:00:00

abstract：:This study was designed to compare the effects of energy-matched carbohydrate (CHO) and carbohydrate-protein (CHO-PRO) supplements on cycling time-trial performance. Twelve competitive male cyclists and triathletes each completed 2 trials in a randomized and counterbalanced order that were separated by 5-10 d and appl...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Toone RJ,Betts JA

更新日期：2010-02-01 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 current study examined the effect of sprint interval exercise on postexercise oxygen consumption, respiratory-exchange ratio (RER), substrate oxidation, and blood pressure in adolescents. Participants were 10 normal-weight healthy youth (7 female), age 15-18 years. After overnight fasts, each participant undertook...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Burns SF,Oo HH,Tran AT

更新日期：2012-02-01 00:00:00

abstract：:The timing of carbohydrate ingestion and how this influences net muscle glycogen utilization and fatigue has only been investigated in prolonged cycling. Past findings may not translate to running because each exercise mode is distinct both in the metabolic response to carbohydrate ingestion and in the practicalities ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Menzies C,Wood M,Thomas J,Hengist A,Walhin JP,Jones R,Tsintzas K,Gonzalez JT,Betts JA

更新日期：2020-02-28 00:00:00

abstract：PURPOSE:To illustrate the effects of low-carbohydrate (LC) and grain-based (GB) diets on body composition, biomarkers, athletic training, and performance in an elite triathlete. METHODS:The athlete followed 2 dietary interventions for 14 d while maintaining a prescheduled training program. Pre- and postintervention me...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Rosenkranz RR,Cook CM,Haub MD

更新日期：2007-06-01 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：:The polyunsaturated fatty acids docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) affect vascular relaxation and involve factors (e.g., nitric oxide) that contribute to exercise-induced increases in skeletal-muscle blood flow (Q). The authors investigated whether DHA and EPA supplementation augments skeletal-...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Stebbins CL,Hammel LE,Marshal BJ,Spangenberg EE,Musch TI

更新日期：2010-12-01 00:00:00

abstract：:Delayed onset muscle soreness (DOMS) following eccentric exercise is associated with increased inflammation which can be debilitating. Incorporation of long-chain omega-3 polyunsaturated fatty acids (LC n-3 PUFA), eicosapentaenoic acid, and docosahexaenoic acid into membrane phospholipids provides anti-inflammatory, p...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Anthony R,Macartney MJ,Peoples GE

更新日期：2021-01-20 00:00:00

abstract：:The aim of this study was to conduct a systematic review of the effects of probiotic supplementation on physically active individuals. The participants, interventions, comparisons, outcome and study design inclusion criteria were (a) studies involving healthy adults or older subjects of both sexes who did physical exe...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Möller GB,da Cunha Goulart MJV,Nicoletto BB,Alves FD,Schneider CD

更新日期：2019-09-01 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：: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：:Fluid milk consumed in conjunction with resistance training (RT) provides additional protein and calcium, which may enhance the effect of RT on body composition. However, the literature on this topic is inconsistent with limited data in adolescents. Therefore, we examined the effects of a supervised RT program (6 mo, ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Lambourne K,Washburn RA,Lee J,Betts JL,Thomas DT,Smith BK,Gibson CA,Sullivan DK,Donnelly JE

更新日期：2013-08-01 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：:The purpose of this study was to examine the effect of high-intensity physical activity during training on the biochemical status of thiamin and riboflavin in athletes. Thiamin and riboflavin concentrations in whole blood of a group of 19 athletes (6 men and 13 women) were measured during a low-intensity preparatory p...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Sato A,Shimoyama Y,Ishikawa T,Murayama N

更新日期：2011-06-01 00:00:00