Endocrine Effects of Relative Energy Deficiency in Sport.

abstract：:Iron plays an important role in thyroid hormone metabolism; thus, iron deficiency anemia may lead to alterations in resting metabolic rate (RMR). Based on this premise, two iron-deficient-anemic female athletes, 18 (A1) and 21 (A2) years of age, were supplemented with 23 mg/day of elemental iron to assess its effects ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Harris Rosenzweig P,Volpe SL

更新日期：2000-12-01 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：: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：: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：:The aim of this study was to evaluate the frequency of dietary supplement (DS) use among elite Finnish athletes in 2002 and 2009. In 2009, the authors also wanted to examine the reasons for athletes' DS use, whether athletes feel they have experienced benefits from their supplement use, and whether athletes had had an...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Heikkinen A,Alaranta A,Helenius I,Vasankari T

更新日期：2011-08-01 00:00:00

abstract：:Impaired muscle function has been coupled to vitamin D insufficiency in young women and in elderly men and women. Those living at Northern latitudes are at risk for vitamin D insufficiency due to low sun exposure which may be more pronounced among elite swimmers because of their indoor training schedules. We aimed to ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Geiker NRW,Hansen M,Jakobsen J,Kristensen M,Larsen R,Jørgensen NR,Hansen BS,Bügel S

更新日期：2017-10-01 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：:Dietary protein intake should be optimized in all athletes to ensure proper recovery and enhance the skeletal muscle adaptive response to exercise training. In addition to total protein intake, the use of specific proteincontaining food sources and the distribution of protein throughout the day are relevant for optimi...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Gillen JB,Trommelen J,Wardenaar FC,Brinkmans NY,Versteegen JJ,Jonvik KL,Kapp C,de Vries J,van den Borne JJ,Gibala MJ,van Loon LJ

更新日期：2017-04-01 00:00:00

abstract：:To defend against hydrogen cation accumulation and muscle fatigue during exercise, sodium bicarbonate (NaHCO3) ingestion is commonplace. The individualized dose-response relationship between NaHCO3 ingestion and blood biochemistry is unclear. The present study investigated the bicarbonate, pH, base excess and sodium r...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Jones RL,Stellingwerff T,Artioli GG,Saunders B,Cooper S,Sale C

更新日期：2016-10-01 00:00:00

abstract：BACKGROUND:Time spent in sedentary activities (such as watching television) has previously been associated with several risk factors for cardiovascular disease (CVD) such as increased low-density lipoprotein cholesterol (LDL-C). Little is known about associations with lipoprotein subfractions. Using television and comp...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Frazier-Wood AC,Borecki IB,Feitosa MF,Hopkins PN,Smith CE,Arnett DK

更新日期：2014-02-01 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：: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：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：:This study examined the effect of amino acids in a carbohydrate beverage on cycling performance. Twelve male athletes (28.5 +/- 2.1 yr) cycled at 75% VO2peak for 90 min followed by a ride to exhaustion at 85% VO2peak, before (T1) and on 2 consecutive days (T2 and T3) after 2 weeks of supplementation with 3.6% carbohyd...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Skillen RA,Testa M,Applegate EA,Heiden EA,Fascetti AJ,Casazza GA

更新日期：2008-10-01 00:00:00

abstract：:Caffeine and creatine are ingredients in the most popular dietary supplements consumed by soccer players. However, some products may not contain the disclosed amounts of the ingredients listed on the label, compromising the safe usage and the effectiveness of these supplements. Therefore, the aim of this study was to ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Inácio SG,de Oliveira GV,Alvares TS

更新日期：2016-08-01 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：BACKGROUND/OBJECTIVES:To compare the effects of a 3-week supplementation between two different mixtures of antioxidants and placebo on aerobic exercise performance in acute normobaric hypoxia. SUBJECTS/METHODS:Seventeen subjects were randomly assigned in a double-blind fashion to receive a broad-based antioxidants sup...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Mariacher C,Gatterer H,Greilberger J,Djukic R,Greilberger M,Philippe M,Burtscher M

更新日期：2014-04-01 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

abstract：:We previously reported that insulin resistance in skeletal muscle of obese individuals was associated with decreases in insulin signal transduction and tyrosine kinase activity of the insulin receptor. Herein is reviewed the recently published data supporting the hypothesis that protein kinase C (PKC) phosphorylates t...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Dohm GL

更新日期：2001-12-01 00:00:00

abstract：:Obesity and increased arterial stiffness are independent risk factors for cardiovascular disease. Arterial stiffness is increased in obese individuals than in age-matched nonobese individuals. We demonstrated that dietary modification and exercise training are effective in reducing arterial stiffness in obese persons....

journal_title：International journal of sport nutrition and exercise metabolism

authors： Maeda S,Zempo-Miyaki A,Sasai H,Tsujimoto T,So R,Tanaka K

更新日期：2015-02-01 00:00:00

abstract：PURPOSE:This study investigated the effect of bovine colostrum (BC) on mucosal defense in the respiratory tracts of athletes and a nonexercising control group. METHODS:An athlete cohort (ATH) of 25 (12 male, 13 female) elite swimmers (age 14-23 yr) and a control cohort (CON) of 28 (9M, 19F) students (age 18-27 yr) wer...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Crooks C,Cross ML,Wall C,Ali A

更新日期：2010-06-01 00:00:00

abstract：:The authors tested the hypothesis that perception of carbohydrate (CHO) availability augments exercise capacity in conditions of reduced CHO availability. Nine males completed a sleep-low train model comprising evening glycogen-depleting cycling followed by an exhaustive cycling protocol the next morning in the fasted...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Waterworth SP,Spencer CC,Porter AL,Morton JP

更新日期：2020-02-04 00:00:00

abstract：:Postexercise fat oxidation may be important for exercise prescription aimed at optimizing fat loss. The authors examined the effects of exercise intensity, duration, and modality on postexercise oxygen consumption (VO2) and substrate selection/ respiratory-exchange ratio (RER) in healthy individuals. Three experiments...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Warren A,Howden EJ,Williams AD,Fell JW,Johnson NA

更新日期：2009-12-01 00:00:00

abstract：:Hypoxic exercise is characterized by workloads decrements. Because exercise and high altitude independently elicit redox perturbations, the study purpose was to examine hypoxic and normoxic steady-state exercise on blood oxidative stress. Active males (n = 11) completed graded cycle ergometry in normoxic (975 m) and h...

journal_title：International journal of sport nutrition and exercise metabolism

authors： McGinnis G,Kliszczewiscz B,Barberio M,Ballmann C,Peters B,Slivka D,Dumke C,Cuddy J,Hailes W,Ruby B,Quindry J

更新日期：2014-12-01 00:00:00

abstract：BACKGROUND:Creatine supplementation (CS) has been reported to increase body mass and improve performance in high-intensity, short-duration exercise tasks. Research on CS, most of which has come into existence since 1994, has been the focus of several qualitative reviews, but only one meta-analysis, which was conducted ...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Branch JD

更新日期：2003-06-01 00:00:00

abstract：:Tonic vagal modulation of cardiac period (R-R interval) decreases with advancing age, but is greater in middle-aged and older adults who habitually perform aerobic exercise compared with their sedentary peers. Cardiovagal baroreflex sensitivity also declines markedly with age in sedentary adults but only 50% as much i...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Seals DR,Monahan KD,Bell C,Tanaka H,Jones PP

更新日期：2001-12-01 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：:The present study investigated the effect of the glycemic index of an evening meal on responses to a standard high glycemic index (HGI) breakfast the following morning. The metabolic responses to exercise 3 h after breakfast were also investigated. Seven active males completed 2 trials. In each trial, participants wer...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Stevenson E,Williams C,Nute M,Swaile P,Tsui M

更新日期：2005-06-01 00:00:00

abstract：PURPOSE:Exercise leads to a lower risk of coronary artery disease (CAD). However, whether time of day physical exercise has effects on CAD is still unclear. The present study is to investigate the relationship between time of day physical exercise and angiography determined CAD in a Chinese population. SUBJECTS:A tota...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Zhao H,Chu XQ,Lian XQ,Wang ZM,Gao W,Wang LS

更新日期：2014-04-01 00:00:00

abstract：:The aim of the study was to evaluate the effectiveness of an intervention program that combined nutrition education and prevention of disordered eating in a group of female professional dance students. Thirty-two dancers, aged 19-25 years, took part in the program. Evaluation was done by a series of questionnaires tha...

journal_title：International journal of sport nutrition and exercise metabolism

authors： Yannakoulia M,Sitara M,Matalas AL

更新日期：2002-03-01 00:00:00