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[PMID]:29296106
[Au] Autor:Seifert JG; Brumet A; St Cyr JA
[Ad] Endereço:Movement Science Laboratory, Montana State University, Bozeman, MT USA.
[Ti] Título:The influence of D-ribose ingestion and fitness level on performance and recovery.
[So] Source:J Int Soc Sports Nutr;14:47, 2017.
[Is] ISSN:1550-2783
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Background: Skeletal muscle adenosine triphosphate (ATP) levels are severely depleted during and following prolonged high intensity exercise. Recovery from these lower ATP levels can take days, which can affect performance on subsequent days of exercise. Untrained individuals often suffer the stress and consequences of acute, repeated bouts of exercise by not having the ability to perform or recovery sufficiently to exercise on subsequent days. Conversely, trained individuals may be able to recover more quickly due to their enhanced metabolic systems. D-Ribose (DR) has been shown to enhance the recovery in ATP; however, it is not known if recovery and performance can be benefitted with DR ingestion. Therefore, this study was designed to determine what influence DR might have on muscular performance, recovery, and metabolism during and following a multi-day exercise regimen. Methods: The study was a double blind, crossover study in 26 healthy subjects compared 10 g/day of DR to 10 g/day of dextrose (DEX, control). All subjects completed 2 days of loading with either DR or DEX, followed by 3 additional days of supplementation and during these 3 days of supplementation, each subject underwent 60 min of high intensity interval exercise in separate daily sessions, which involved cycling (8 min of exercise at 60% and 2 min at 80% VO max), followed by a 2 min power output (PO) test. Subjects were divided into two groups based on peak VO results, lower VO (LVO ) and higher peak VO (HVO ). Results: Mean and peak PO increased significantly from day 1 to day 3 for the DR trial compared to DEX in the LVO group. Rate of perceived exertion (RPE) and creatine kinase (CK) were significantly lower for DR than DEX in the LVO group. No differences in PO, RPE, heart rate, CK, blood urea nitrogen, or glucose were found between either supplement for the HVO group. Conclusion: DR supplementation in the lower VO max group resulted in maintenance in exercise performance, as well as lower levels of RPE and CK. Unlike no observed benefits with DEX supplementation.
[Mh] Termos MeSH primário: Trifosfato de Adenosina/metabolismo
Limiar Anaeróbio/efeitos dos fármacos
Desempenho Atlético/fisiologia
Suplementos Nutricionais
Músculo Esquelético/efeitos dos fármacos
Músculo Esquelético/metabolismo
Aptidão Física/fisiologia
Ribose/farmacologia
[Mh] Termos MeSH secundário: Adulto
Limiar Anaeróbio/fisiologia
Estudos Cross-Over
Método Duplo-Cego
Metabolismo Energético/efeitos dos fármacos
Feminino
Seres Humanos
Masculino
Fenômenos Fisiológicos da Nutrição Esportiva
[Pt] Tipo de publicação:CLINICAL TRIAL; COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
681HV46001 (Ribose); 8L70Q75FXE (Adenosine Triphosphate)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180104
[St] Status:MEDLINE
[do] DOI:10.1186/s12970-017-0205-8


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[PMID]:29209154
[Au] Autor:Tinsley GM; Hamm MA; Hurtado AK; Cross AG; Pineda JG; Martin AY; Uribe VA; Palmer TB
[Ad] Endereço:Energy Balance & Body Composition Laboratory, Musculoskeletal Assessment Laboratory, Department of Kinesiology & Sport Management, Texas Tech University, Box 43011, Lubbock, TX 79409 USA.
[Ti] Título:Effects of two pre-workout supplements on concentric and eccentric force production during lower body resistance exercise in males and females: a counterbalanced, double-blind, placebo-controlled trial.
[So] Source:J Int Soc Sports Nutr;14:46, 2017.
[Is] ISSN:1550-2783
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Background: Pre-workout supplements purportedly enhance feelings of energy, reduce fatigue and improve exercise performance. The purpose of this study was to examine the performance effects of caffeinated and non-caffeinated multi-ingredient pre-workout supplements. Methods: In a counterbalanced, double-blind, placebo-controlled design, eccentric and concentric force production during lower body resistance exercise on a mechanized squat device were assessed after supplement ingestion. Repetitions-in-reserve/RPE and subjective feelings of energy, focus and fatigue were also examined. Twenty-one resistance-trained adults (12 F, 9 M) completed three conditions in random order: caffeinated supplement, non-caffeinated supplement and placebo. Subjects were not informed of the presence of a placebo condition. Thirty minutes after supplement ingestion, a 3-repetition maximum test and 5 sets of 6 repetitions were completed using the squat device. Each repetition involved 4-s eccentric and concentric phases, and the force signal throughout each repetition was sampled from a load cell contained within the squat device. The scaled and filtered force signals were analyzed using customized software. Repeated measures analysis of variance and appropriate follow-up analyses were utilized to compare dependent variables, and relevant effect sizes (d) were calculated. Results: Supplement or placebo ingestion led to similar subjective responses ( > 0.05). Energy (+8 to 44%; d = 0.3 to 0.8) and focus (+8 to 25%; d = 0.3 to 0.5) were acutely increased by supplement or placebo ingestion and decreased as the exercise session progressed. Fatigue was acutely decreased by supplement or placebo ingestion (-7 to 38%; d = -0.1 to -0.6) and increased as the exercise session progressed. Eccentric and concentric forces were unimproved by supplementation during the exercise sets for both sexes. In the non-caffeinated supplement condition only, maximal eccentric force production was lower during sets 3 to 5, as compared to set 1 ( < 0.05). Effect size data indicated that both the caffeinated and non-caffeinated supplements may contribute to small increases in concentric force production in males (+5 to 20%, d = 0.2 to 0.4 relative to placebo), but not females. Conclusions: As compared to placebo, caffeinated and non-caffeinated multi-ingredient pre-workout supplements failed to improve concentric and eccentric force production. In males, effect size data indicate a possible small benefit of supplementation on concentric force production, although this was not statistically significant. When resistance-trained subjects were unaware of the presence of a placebo, resistance exercise performance was similar regardless of whether a placebo or multi-ingredient supplement was ingested.
[Mh] Termos MeSH primário: Cafeína/farmacologia
Suplementos Nutricionais
Músculo Esquelético/efeitos dos fármacos
Músculo Esquelético/fisiologia
Treinamento de Resistência
[Mh] Termos MeSH secundário: Análise de Variância
Método Duplo-Cego
Fadiga
Feminino
Alimentos Formulados
Seres Humanos
Masculino
Resistência Física/efeitos dos fármacos
Resistência Física/fisiologia
Fatores Sexuais
Fenômenos Fisiológicos da Nutrição Esportiva
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
3G6A5W338E (Caffeine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE
[do] DOI:10.1186/s12970-017-0203-x


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[PMID]:29200984
[Au] Autor:Konishi K; Kimura T; Yuhaku A; Kurihara T; Fujimoto M; Hamaoka T; Sanada K
[Ad] Endereço:Graduate School of Sport and Health Science, Ritsumeikan University, Kyoto, Shiga Japan.
[Ti] Título:Mouth rinsing with a carbohydrate solution attenuates exercise-induced decline in executive function.
[So] Source:J Int Soc Sports Nutr;14:45, 2017.
[Is] ISSN:1550-2783
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Background: A decline in executive function could have a negative influence on the control of actions in dynamic situations, such as sports activities. Mouth rinsing with a carbohydrate solution could serve as an effective treatment for preserving the executive function in exercise. The purpose of this study was to examine the effects of mouth rinsing with a carbohydrate solution on executive function after sustained moderately high-intensity exercise. Methods: Eight young healthy participants completed 65 min of running at 75% V̇O max with two mouth-rinsing conditions: with a carbohydrate solution (CHO) or with water (CON). Executive function was assessed before and after exercise by using the incongruent task of the Stroop Color and Word Test. The levels of blood glucose; and plasma adrenocorticotropic hormone (ACTH), epinephrine, and norepinephrine (NE) were evaluated. A two-way repeated-measures ANOVA, with condition (CHO and CON) and time (pre-exercise and post-exercise) as factors, was used to examine the main and interaction effects on the outcome measures. Results: The reaction time in the incongruent condition of the Stroop test significantly increased after exercise in CON (pre-exercise 529 ± 45 ms vs. post-exercise 547 ± 60 ms, = 0.029) but not in CHO (pre-exercise 531 ± 54 ms vs. post-exercise 522 ± 80 ms), which resulted in a significant interaction (condition × time) on the reaction time ( = 0.028). The increased reaction time in CON indicates a decline in the executive function, which was attenuated in CHO. Increases in plasma epinephrine and NE levels demonstrated a trend toward attenuation accompanying CHO ( < 0.085), which appeared to be associated with the preservation of executive function. The blood glucose concentration showed neither significant interactions nor main effects of condition. Conclusions: These findings indicate that mouth rinsing with a carbohydrate solution attenuated the decline in executive function induced by sustained moderately high-intensity exercise, and that such attenuation seems to be unrelated to carbohydrate metabolic pathway but rather attributed, in part, to the inhibition of the excessive release of stress hormones.
[Mh] Termos MeSH primário: Carboidratos da Dieta/administração & dosagem
Carboidratos da Dieta/farmacologia
Função Executiva/efeitos dos fármacos
Função Executiva/fisiologia
Exercício/fisiologia
Antissépticos Bucais/farmacologia
Corrida/fisiologia
[Mh] Termos MeSH secundário: Hormônio Adrenocorticotrópico/metabolismo
Análise de Variância
Glicemia/metabolismo
Epinefrina/metabolismo
Feminino
Seres Humanos
Masculino
Fenômenos Fisiológicos da Nutrição Esportiva
Teste de Stroop
Água
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Blood Glucose); 0 (Dietary Carbohydrates); 0 (Mouthwashes); 059QF0KO0R (Water); 9002-60-2 (Adrenocorticotropic Hormone); YKH834O4BH (Epinephrine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE
[do] DOI:10.1186/s12970-017-0200-0


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[PMID]:29200983
[Au] Autor:Roberts J; Zinchenko A; Suckling C; Smith L; Johnstone J; Henselmans M
[Ad] Endereço:Cambridge Centre for Sport and Exercise Sciences, Anglia Ruskin University, East Road, Cambridge, UK.
[Ti] Título:The short-term effect of high versus moderate protein intake on recovery after strength training in resistance-trained individuals.
[So] Source:J Int Soc Sports Nutr;14:44, 2017.
[Is] ISSN:1550-2783
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Background: Dietary protein intakes up to 2.9 g.kg .d and protein consumption before and after resistance training may enhance recovery, resulting in hypertrophy and strength gains. However, it remains unclear whether protein quantity or nutrient timing is central to positive adaptations. This study investigated the effect of total dietary protein content, whilst controlling for protein timing, on recovery in resistance trainees. Methods: Fourteen resistance-trained individuals underwent two 10-day isocaloric dietary regimes with a protein content of 1.8 g.kg .d (PRO ) or 2.9 g.kg .d (PRO ) in a randomised, counterbalanced, crossover design. On days 8-10 (T1-T3), participants undertook resistance exercise under controlled conditions, performing 3 sets of squat, bench press and bent-over rows at 80% 1 repetition maximum until volitional exhaustion. Additionally, participants consumed a 0.4 g.kg whey protein concentrate/isolate mix 30 min before and after exercise sessions to standardise protein timing specific to training. Recovery was assessed via daily repetition performance, muscle soreness, bioelectrical impedance phase angle, plasma creatine kinase (CK) and tumor necrosis factor-α (TNF-α). Results: No significant differences were reported between conditions for any of the performance repetition count variables ( > 0.05). However, within PRO only, squat performance total repetition count was significantly lower at T3 (19.7 ± 6.8) compared to T1 (23.0 ± 7.5; = 0.006). Pre and post-exercise CK concentrations significantly increased across test days ( ≤ 0.003), although no differences were reported between conditions. No differences for TNF-α or muscle soreness were reported between dietary conditions. Phase angle was significantly greater at T3 for PRO (8.26 ± 0.82°) compared with PRO (8.08 ± 0.80°; = 0.012). Conclusions: When energy intake and peri-exercise protein intake was controlled for, a short term PRO diet did not improve markers of muscle damage or soreness in comparison to a PRO approach following repeated days of intensive training. Whilst it is therefore likely that moderate protein intakes (1.8 g.kg .d ) may be sufficient for resistance-trained individuals, it is noteworthy that both lower body exercise performance and bioelectrical phase angle were maintained with PRO . Longer term interventions are warranted to determine whether PRO intakes are sufficient during prolonged training periods or when extensive exercise (e.g. training twice daily) is undertaken.
[Mh] Termos MeSH primário: Proteínas na Dieta/administração & dosagem
Proteínas na Dieta/farmacologia
Suplementos Nutricionais
Músculo Esquelético/efeitos dos fármacos
Músculo Esquelético/fisiologia
Treinamento de Resistência
Levantamento de Peso
[Mh] Termos MeSH secundário: Adulto
Estudos Cross-Over
Feminino
Seres Humanos
Masculino
Contração Muscular
Músculo Esquelético/metabolismo
Resistência Física
Fenômenos Fisiológicos da Nutrição Esportiva
Levantamento de Peso/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Dietary Proteins)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE
[do] DOI:10.1186/s12970-017-0201-z


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[PMID]:29200982
[Au] Autor:Hamarsland H; Nordengen AL; Nyvik Aas S; Holte K; Garthe I; Paulsen G; Cotter M; Børsheim E; Benestad HB; Raastad T
[Ad] Endereço:Department of Physical Performance, Norwegian School of Sport Sciences, P.O. Box 4014 Ullevål Stadion, 0806 Oslo, Norway.
[Ti] Título:Native whey protein with high levels of leucine results in similar post-exercise muscular anabolic responses as regular whey protein: a randomized controlled trial.
[So] Source:J Int Soc Sports Nutr;14:43, 2017.
[Is] ISSN:1550-2783
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Background: Protein intake is essential to maximally stimulate muscle protein synthesis, and the amino acid leucine seems to possess a superior effect on muscle protein synthesis compared to other amino acids. Native whey has higher leucine content and thus a potentially greater anabolic effect on muscle than regular whey (WPC-80). This study compared the acute anabolic effects of ingesting 2 × 20 g of native whey protein, WPC-80 or milk protein after a resistance exercise session. Methods: 24 young resistance trained men and women took part in this double blind, randomized, partial crossover, controlled study. Participants received either WPC-80 and native whey ( = 10), in a crossover design, or milk ( = 12). Supplements were ingested immediately (20 g) and two hours after (20 g) a bout of heavy-load lower body resistance exercise. Blood samples and muscle biopsies were collected to measure plasma concentrations of amino acids by gas-chromatography mass spectrometry, muscle phosphorylation of p70S6K, 4E-BP1 and eEF-2 by immunoblotting, and mixed muscle protein synthesis by use of [ H ]phenylalanine-infusion, gas-chromatography mass spectrometry and isotope-ratio mass spectrometry. Being the main comparison, differences between native whey and WPC-80 were analysed by a one-way ANOVA and comparisons between the whey supplements and milk were analysed by a two-way ANOVA. Results: Native whey increased blood leucine concentrations more than WPC-80 and milk ( < 0.05). Native whey ingestion induced a greater phosphorylation of p70S6K than milk 180 min after exercise ( = 0.03). Muscle protein synthesis rates increased 1-3 h hours after exercise with WPC-80 (0.119%), and 1-5 h after exercise with native whey (0.112%). Muscle protein synthesis rates were higher 1-5 h after exercise with native whey than with milk (0.112% vs. 0.064, = 0.023). Conclusions: Despite higher-magnitude increases in blood leucine concentrations with native whey, it was not superior to WPC-80 concerning effect on muscle protein synthesis and phosphorylation of p70S6K during a 5-h post-exercise period. Native whey increased phosphorylation of p70S6K and muscle protein synthesis rates to a greater extent than milk during the 5-h post exercise period. Trial registration: This study was retrospectively registered at clinicaltrials.gov as NCT02968888.
[Mh] Termos MeSH primário: Suplementos Nutricionais
Leucina/análise
Músculo Esquelético/efeitos dos fármacos
Treinamento de Resistência
Fenômenos Fisiológicos da Nutrição Esportiva
Proteínas do Soro do Leite/química
Proteínas do Soro do Leite/farmacologia
[Mh] Termos MeSH secundário: Estudos Cross-Over
Método Duplo-Cego
Feminino
Voluntários Saudáveis
Seres Humanos
Leucina/farmacologia
Masculino
Proteínas Musculares/biossíntese
Músculo Esquelético/fisiologia
Biossíntese de Proteínas/efeitos dos fármacos
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Muscle Proteins); 0 (Whey Proteins); GMW67QNF9C (Leucine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[Cl] Clinical Trial:ClinicalTrial
[St] Status:MEDLINE
[do] DOI:10.1186/s12970-017-0202-y


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[PMID]:29173121
[Au] Autor:Bytomski JR
[Ad] Endereço:Department of Community and Family Medicine, Duke University, Durham, North Carolina.
[Ti] Título:Fueling for Performance.
[So] Source:Sports Health;10(1):47-53, 2018 Jan/Feb.
[Is] ISSN:1941-0921
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:CONTEXT: Proper nutrition is crucial for an athlete to optimize his or her performance for training and competition. Athletes should be able to meet their dietary needs through eating a wide variety of whole food sources. EVIDENCE ACQUISITION: PubMed was searched for relevant articles published from 1980 to 2016. STUDY DESIGN: Clinical review. LEVEL OF EVIDENCE: Level 4. RESULTS: An athlete should have both daily and activity-specific goals for obtaining the fuel necessary for successful training. Depending on the timing of their season, athletes may be either trying to gain lean muscle mass, lose fat, or maintain their current weight. CONCLUSION: An athlete will have different macronutrient goals depending on sport, timing of exercise, and season status. There are no specific athletic micronutrient guidelines, but testing should be considered for athletes with deficiency or injury. Also, some athletes who eliminate certain whole food groups (eg, vegetarian) may need to supplement their diet to avoid deficiencies.
[Mh] Termos MeSH primário: Desempenho Atlético/fisiologia
Dieta
Necessidades Nutricionais
Fenômenos Fisiológicos da Nutrição Esportiva
[Mh] Termos MeSH secundário: Atletas
Ingestão de Energia
Metabolismo Energético
Seres Humanos
Esportes/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180210
[Lr] Data última revisão:
180210
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE
[do] DOI:10.1177/1941738117743913


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[PMID]:28831951
[Au] Autor:Draganidis D; Chondrogianni N; Chatzinikolaou A; Terzis G; Karagounis LG; Sovatzidis A; Avloniti A; Lefaki M; Protopapa M; Deli CK; Papanikolaou K; Jamurtas AZ; Fatouros IG
[Ad] Endereço:1School of Physical Education and Sport Sciences,University of Thessaly,Karies,Trikala 42100,Greece.
[Ti] Título:Protein ingestion preserves proteasome activity during intense aseptic inflammation and facilitates skeletal muscle recovery in humans.
[So] Source:Br J Nutr;118(3):189-200, 2017 Aug.
[Is] ISSN:1475-2662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The ubiquitin-proteasome system (UPS) is the main cellular proteolytic system responsible for the degradation of normal and abnormal (e.g. oxidised) proteins. Under catabolic conditions characterised by chronic inflammation, the UPS is activated resulting in proteolysis, muscle wasting and impaired muscle function. Milk proteins provide sulphur-containing amino acid and have been proposed to affect muscle inflammation. However, the response of the UPS to aseptic inflammation and protein supplementation is largely unknown. The aim of this study was to investigate how milk protein supplementation affects UPS activity and skeletal muscle function under conditions of aseptic injury induced by intense, eccentric exercise. In a double-blind, cross-over, repeated measures design, eleven men received either placebo (PLA) or milk protein concentrate (PRO, 4×20 g on exercise day and 20 g/d for the following 8 days), following an acute bout of eccentric exercise (twenty sets of fifteen eccentric contractions at 30°/s) on an isokinetic dynamometer. In each trial, muscle biopsies were obtained from the vastus lateralis muscle at baseline, as well as at 2 and 8 d post exercise, whereas blood samples were collected before exercise and at 6 h, 1 d, 2 d and 8 d post exercise. Muscle strength and soreness were assessed before exercise, 6 h post exercise and then daily for 8 consecutive days. PRO preserved chymotrypsin-like activity and attenuated the decrease of strength, facilitating its recovery. PRO also prevented the increase of NF-κB phosphorylation and HSP70 expression throughout recovery. We conclude that milk PRO supplementation following exercise-induced muscle trauma preserves proteasome activity and attenuates strength decline during the pro-inflammatory phase.
[Mh] Termos MeSH primário: Exercício
Inflamação/metabolismo
Proteínas do Leite/administração & dosagem
Complexo de Endopeptidases do Proteassoma/metabolismo
Músculo Quadríceps/metabolismo
[Mh] Termos MeSH secundário: Adulto
Estudos Cross-Over
Suplementos Nutricionais
Método Duplo-Cego
Proteínas de Choque Térmico HSP70/genética
Proteínas de Choque Térmico HSP70/metabolismo
Seres Humanos
Masculino
Força Muscular/fisiologia
NF-kappa B/genética
NF-kappa B/metabolismo
Dor/prevenção & controle
Medição da Dor
Fosforilação
Fenômenos Fisiológicos da Nutrição Esportiva
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (HSP70 Heat-Shock Proteins); 0 (Milk Proteins); 0 (NF-kappa B); EC 3.4.25.1 (Proteasome Endopeptidase Complex)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170907
[Lr] Data última revisão:
170907
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170824
[St] Status:MEDLINE
[do] DOI:10.1017/S0007114517001829


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[PMID]:28406437
[Au] Autor:Maresch CC; Petry SF; Theis S; Bosy-Westphal A; Linn T
[Ad] Endereço:Clinical Research Unit, Centre of Internal Medicine, Justus Liebig University, 35392 Giessen, Hesse, Germany. constanze.c.maresch@ernaehrung.uni-giessen.de.
[Ti] Título:Low Glycemic Index Prototype Isomaltulose-Update of Clinical Trials.
[So] Source:Nutrients;9(4), 2017 Apr 13.
[Is] ISSN:2072-6643
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Low glycemic index diets are supposed to achieve a more beneficial effect on blood glucose control in people with diabetes mellitus and may also provide metabolic benefits for the general population. A prototype of a low-glycemic index carbohydrate is the natural occurring disaccharide isomaltulose that can be commercially produced from sucrose (beet sugar) to industrial scale. It is currently used in various food and drink applications as well as special and clinical nutrition feeds and formula diet as a food ingredient and alternative sugar. Here we provide an overview on clinical trials with isomaltulose including an analysis of its effects on glycemia and fat oxidation as compared to high glycemic index sugars and carbohydrates. In addition, we discuss recent reports on beneficial effects in weight-loss maintenance and pregnancy.
[Mh] Termos MeSH primário: Diabetes Mellitus Tipo 1/dietoterapia
Diabetes Mellitus Tipo 2/dietoterapia
Dieta para Diabéticos
Índice Glicêmico
Hiperglicemia/prevenção & controle
Isomaltose/análogos & derivados
Adoçantes Calóricos/uso terapêutico
[Mh] Termos MeSH secundário: Desempenho Atlético
Manutenção do Peso Corporal
Ensaios Clínicos como Assunto
Cognição
Diabetes Mellitus Tipo 1/sangue
Diabetes Mellitus Tipo 2/sangue
Dieta para Diabéticos/efeitos adversos
Dieta Redutora/efeitos adversos
Feminino
Seres Humanos
Isomaltose/efeitos adversos
Isomaltose/uso terapêutico
Masculino
Adoçantes Calóricos/efeitos adversos
Sobrepeso/prevenção & controle
Gravidez
Complicações na Gravidez/prevenção & controle
Fenômenos Fisiológicos da Nutrição Esportiva
Programas de Redução de Peso
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Nutritive Sweeteners); 67I334IX2M (Isomaltose); V59P50X4UY (isomaltulose)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170908
[Lr] Data última revisão:
170908
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170414
[St] Status:MEDLINE


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[PMID]:28381530
[Au] Autor:Volterman KA; Moore DR; Breithaupt P; Godin JP; Karagounis LG; Offord EA; Timmons BW
[Ad] Endereço:Child Health & Exercise Medicine Program, Department of Pediatrics, McMaster University, Hamilton, Canada.
[Ti] Título:Postexercise Dietary Protein Ingestion Increases Whole-Body Leucine Balance in a Dose-Dependent Manner in Healthy Children.
[So] Source:J Nutr;147(5):807-815, 2017 May.
[Is] ISSN:1541-6100
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Protein ingestion is important in enhancing whole-body protein balance in children. The effect of discrete bolus protein ingestion on acute postexercise recovery has yet to be determined. This study determined the effect of increasing doses of ingested protein on postexercise whole-body leucine balance in healthy, active children. Thirty-five children (26 boys, 9 girls; age range: 9-13 y; weight mean ± SD: 44.9 ± 10.6 kg) underwent a 5-d adaptation diet (0.95 g protein â‹… kg â‹… d ) before performing 20 min of cycling 3 times with a concurrent, primed, constant infusion of [ C]leucine. After exercise, participants consumed an isoenergetic beverage (140 kcal) containing variable amounts of bovine skim-milk protein and carbohydrates (sucrose) (0, 5, 10, and 15 g protein made up with 35, 30, 25, and 20 g carbohydrates, respectively). Blood and breath samples were taken over the 3 h of recovery to determine non-steady state whole-body leucine oxidation (Leu ) and net leucine balance (Leu ). Leu (secondary outcome) peaked 60 min after beverage ingestion and demonstrated a relative dose-response over the 3 h of recovery (15 g = 10 > 5 > 0 g; < 0.001). Leu (primary outcome) demonstrated a dose-response over the 3 h [15 g (24.2 ± 8.2 mg/kg) > 10 g (11.6 ± 4.3 mg/kg) > 5 g (5.7 ± 1.9 mg/kg) > 0 g (-3.0 ± 1.7 mg/kg); all < 0.01] with all conditions different from zero (all 0.001). Over the 3-h postexercise period, Leu was negative with carbohydrate ingestion alone; however, the co-ingestion of carbohydrates and 5 g high-quality dietary protein was sufficient to promote a positive postexercise whole-body protein balance in healthy, active children. Moreover, Leu increased in a dose-dependent manner within the protein range studied. Children should consider consuming a source of dietary protein after physical activity to enhance whole-body anabolism. This trial was registered at clinicaltrials.gov as NCT01598935.
[Mh] Termos MeSH primário: Proteínas na Dieta/farmacologia
Exercício/fisiologia
Leucina/metabolismo
Fenômenos Fisiológicos da Nutrição Esportiva
[Mh] Termos MeSH secundário: Adolescente
Animais
Criança
Dieta
Carboidratos da Dieta/administração & dosagem
Proteínas na Dieta/administração & dosagem
Proteínas na Dieta/metabolismo
Relação Dose-Resposta a Droga
Ingestão de Alimentos
Feminino
Seres Humanos
Masculino
Leite
Valores de Referência
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Dietary Carbohydrates); 0 (Dietary Proteins); GMW67QNF9C (Leucine)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170719
[Lr] Data última revisão:
170719
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170407
[St] Status:MEDLINE
[do] DOI:10.3945/jn.116.239756


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[PMID]:28368321
[Au] Autor:Manore MM; Patton-Lopez MM; Meng Y; Wong SS
[Ad] Endereço:School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR 98331, USA. melinda.manore@oregonstate.edu.
[Ti] Título:Sport Nutrition Knowledge, Behaviors and Beliefs of High School Soccer Players.
[So] Source:Nutrients;9(4), 2017 Apr 01.
[Is] ISSN:2072-6643
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:For adolescent athletes (14-18 years), data on sport nutrition knowledge, behaviors and beliefs are limited, especially based on sex, race/ethnicity and socioeconomic status. High school soccer players ( = 535; 55% female; 51% White, 41% Latino; 41% National School Lunch Program (NSLP) participants (80% Latino)) completed two questionnaires (demographic/health history and sport nutrition). The sport nutrition knowledge score was 45.6% with higher scores in NSLP-Whites vs. NSLP-Latinos ( < 0.01). Supplement knowledge differed by sex (16% lower in females; = 0.047) and race/ethnicity (33% lower in Latinos; < 0.001). Breakfast consumption was 57%; females ate breakfast less (50%) than males (60%; < 0.001); NSLP-participants ate breakfast less (47%) than non-NSLP (62%; < 0.001). Supplement use was 46%, with Latinos using more supplements than Whites do ( = 0.016). Overall, 30% used protein shakes, with females using less than males ( = 0.02), while use was twice as likely in Latino vs. White ( = 0.03). Overall, 45% reported their nutrient requirements were different from non-athlete peers. Latinos were less likely ( = 0.03) to report that their diet met nutritional requirements, but more than twice as likely to report that nutritional supplements were necessary for training ( < 0.001). Adolescent athletes, especially females and Latinos, would benefit from sport nutrition education that enhances food selection skills for health and sport performance.
[Mh] Termos MeSH primário: Comportamento do Adolescente
Atletas
Conhecimentos, Atitudes e Prática em Saúde
Dieta Saudável
Cooperação do Paciente
Ciências da Nutrição e do Esporte/educação
[Mh] Termos MeSH secundário: Adolescente
Comportamento do Adolescente/etnologia
Desenvolvimento do Adolescente
Dieta/efeitos adversos
Dieta/etnologia
Suplementos Nutricionais/efeitos adversos
Grupo com Ancestrais do Continente Europeu
Feminino
Conhecimentos, Atitudes e Prática em Saúde/etnologia
Dieta Saudável/etnologia
Hispano-Americanos
Seres Humanos
Masculino
Desenvolvimento Muscular
Determinação de Necessidades de Cuidados de Saúde
Oregon
Cooperação do Paciente/etnologia
Instituições Acadêmicas
Autorrelato
Futebol
Fatores Socioeconômicos
Fenômenos Fisiológicos da Nutrição Esportiva/etnologia
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170830
[Lr] Data última revisão:
170830
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170404
[St] Status:MEDLINE



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