International journal of sport nutrition最新文献_第7页

Effect of low- and high-carbohydrate diets on the plasma glutamine and circulating leukocyte responses to exercise. 低碳水化合物和高碳水化合物饮食对血浆谷氨酰胺和循环白细胞对运动反应的影响。

International journal of sport nutrition Pub Date : 1998-03-01 DOI: 10.1123/ijsn.8.1.49

M Gleeson, A K Blannin, N P Walsh, N C Bishop, A M Clark

引用次数: 70

Examination of the self-selected fluid intake practices by junior athletes during a simulated duathlon event. 青少年运动员在模拟两项比赛中自选液体摄入练习的检查。

International journal of sport nutrition Pub Date : 1998-03-01 DOI: 10.1123/ijsn.8.1.10

S Iuliano, G Naughton, G Collier, J Carlson

引用次数: 43

Nutritional and fluid intake in a 100-km ultramarathon. 100公里超级马拉松的营养和液体摄入量。

International journal of sport nutrition Pub Date : 1998-03-01 DOI: 10.1123/ijsn.8.1.24

K E Fallon, E Broad, M W Thompson, P A Reull

引用次数: 74

Blood glucose and glucoregulatory hormone responses to solid and liquid carbohydrate ingestion during exercise. 运动期间摄入固体和液体碳水化合物对血糖和血糖调节激素的影响。

International journal of sport nutrition Pub Date : 1998-03-01 DOI: 10.1123/ijsn.8.1.70

R A Robergs, S B McMinn, C Mermier, G Leadbetter, B Ruby, C Quinn

{"title":"Blood glucose and glucoregulatory hormone responses to solid and liquid carbohydrate ingestion during exercise.","authors":"R A Robergs, S B McMinn, C Mermier, G Leadbetter, B Ruby, C Quinn","doi":"10.1123/ijsn.8.1.70","DOIUrl":"https://doi.org/10.1123/ijsn.8.1.70","url":null,"abstract":"This study was conducted to compare blood glucose and glucoregulatory hormone responses to the ingestion of solid and liquid carbohydrate (CHO) during prolonged cycling, followed by 30 min of isokinetic cycling. Eight male cyclists randomly completed three cycling trials (LC = liquid CHO, SCE = solid CHO with water equal to LC, SCA = solid CHO + ad libitum water). Each subject cycled for 120 min at 65% of VO2max with CHO ingestion (0.6 g CHO/ kg/hr) at 0, 30, 60, 90, and 120 min. Subjects then completed a 30-min maximal isokinetic ride at 90 rpm. There was no significant (p < .05) difference between the trials for plasma glucose, insulin, glucagon, glycerol, lactate, RER, HR, VO2, RPE, and total work performed during the isokinetic ride. However, serum glucose was significantly lower in the SCE and SCA trials compared to LC at 80 min. The ingestion of a solid food containing CHO, protein, and fat with added water produced similar blood glucose, metabolic, glucoregulatory hormone, and exercise performance responses to those seen with the ingestion of liquid CHO.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 1","pages":"70-83"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.1.70","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20458157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Sodium bicarbonate ingestion does not attenuate the VO2 slow component during constant-load exercise. 在恒定负荷运动中，碳酸氢钠摄入不会减弱VO2慢速组分。

International journal of sport nutrition Pub Date : 1998-03-01 DOI: 10.1123/ijsn.8.1.60

K L Heck, J A Potteiger, K L Nau, J M Schroeder

{"title":"Sodium bicarbonate ingestion does not attenuate the VO2 slow component during constant-load exercise.","authors":"K L Heck, J A Potteiger, K L Nau, J M Schroeder","doi":"10.1123/ijsn.8.1.60","DOIUrl":"https://doi.org/10.1123/ijsn.8.1.60","url":null,"abstract":"We examined the effects of sodium bicarbonate ingestion on the VO2 slow component during constant-load exercise. Twelve physically active males performed two 30-min cycling trials at an intensity above the lactate threshold. Subjects ingested either sodium bicarbonate (BIC) or placebo (PLC) in a randomized, counterbalanced order. Arterialized capillary blood samples were analyzed for pH, bicarbonate concentration ([HCO3-]), and lactate concentration ([La]). Expired gas samples were analyzed for oxygen consumption (VO2). The VO2 slow component was defined as the change in VO2 from Minutes 3 and 4 to Minutes 28 and 29. Values for pH and [HCO3-] were significantly higher for BIC compared to PLC. There was no significant difference in [La] between conditions. For both conditions there was a significant time effect for VO2 during exercise; however, no significant difference was observed between BIC and PLC. While extracellular acid-base measures were altered during the BIC trial, sodium bicarbonate ingestion did not attenuate the VO2 slow component during constant-load exercise.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 1","pages":"60-9"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.1.60","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20458156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Consistency in preventing voluntary dehydration in boys who drink a flavored carbohydrate-NaCl beverage during exercise in the heat. 在高温运动中饮用调味碳水化合物- nacl饮料的男孩预防自愿脱水的一致性。

International journal of sport nutrition Pub Date : 1998-03-01 DOI: 10.1123/ijsn.8.1.1

B Wilk, S Kriemler, H Keller, O Bar-Or

{"title":"Consistency in preventing voluntary dehydration in boys who drink a flavored carbohydrate-NaCl beverage during exercise in the heat.","authors":"B Wilk, S Kriemler, H Keller, O Bar-Or","doi":"10.1123/ijsn.8.1.1","DOIUrl":"https://doi.org/10.1123/ijsn.8.1.1","url":null,"abstract":"Twelve 10- to 12-year-old healthy boys performed six 70-min intermittent exercise sessions (three 20-min cycling bouts at 50% VO2max with 5 min rest in between) over a 2-week period at 35 +/- 1 degrees C, 50 +/- 5% or 60 +/- 5% relative humidity. Subjects drank grape-flavored solution with 6% carbohydrate (2% glucose, 4% sucrose) and 18.0 mmol.L-1 NaCl ad libitum. Body weight (BW), heart rate, rectal temperature, thirst, and stomach fullness perception were monitored periodically. There were no differences among the six sessions in voluntary drink intake (765-902 g), hydration level (+0.75 to +1.07%BW), sweating rate (245-263 g.m-2.hr-1), and the other physiological and perceptual variables. A positive fluid balance was achieved in 67 out of 72 sessions. Voluntary drink intake of grape-flavored carbohydrate-NaCl beverage was consistently sufficient to prevent dehydration in 10- to 12-year-old boys during repeated exposures of exercise in the heat. This effect is likely to be achieved through a combination of physiological and behavioral mechanisms.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.1.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20456798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

The role of social physique anxiety and other variables in predicting eating behaviors in college students. 社交体质焦虑等变量对大学生饮食行为的预测作用。

International journal of sport nutrition Pub Date : 1997-12-01 DOI: 10.1123/ijsn.7.4.310

L M Cox, C D Lantz, J L Mayhew

引用次数: 33

Effects of a low-dose amino acid supplement on adaptations to cycling training in untrained individuals. 低剂量氨基酸补充对未训练个体适应自行车训练的影响。

International journal of sport nutrition Pub Date : 1997-12-01 DOI: 10.1123/ijsn.7.4.298

M D Vukovich, R L Sharp, L D Kesl, D L Schaulis, D S King

引用次数: 23

Carbohydrate drinks delay fatigue during intermittent, high-intensity cycling in active men and women. 碳水化合物饮料可以延缓运动男性和女性在间歇性高强度骑行时的疲劳。

International journal of sport nutrition Pub Date : 1997-12-01 DOI: 10.1123/ijsn.7.4.261

J M Davis, D A Jackson, M S Broadwell, J L Queary, C L Lambert

引用次数: 92

The effects of gamma-oryzanol supplementation during resistance exercise training. 在抗阻运动训练中补充γ -谷维醇的效果。

International journal of sport nutrition Pub Date : 1997-12-01 DOI: 10.1123/ijsn.7.4.318

A C Fry, E Bonner, D L Lewis, R L Johnson, M H Stone, W J Kraemer

{"title":"The effects of gamma-oryzanol supplementation during resistance exercise training.","authors":"A C Fry, E Bonner, D L Lewis, R L Johnson, M H Stone, W J Kraemer","doi":"10.1123/ijsn.7.4.318","DOIUrl":"https://doi.org/10.1123/ijsn.7.4.318","url":null,"abstract":"To determine the effectiveness of gamma-oryzanol supplementation, weight-trained males were randomly divided into supplemented (G-O) and control placebo (Con) groups. The G-O group ingested 500 mg.day-1 of gamma-oryzanol according to manufacturer's instructions. Test batteries were administered before (T1), after 4 weeks (T2), and after 9 weeks (T3) of a periodized resistance exercise program. Both groups demonstrated significant increases in 1 repetition maximum muscular strength (bench press and squat) and vertical jump power, with no differences between the groups. No differences between groups were observed for measures of circulating concentrations of hormones (testosterone, cortisol, estradiol, growth hormone, insulin, beta-endorphin), minerals (calcium, magnesium), binding protein (albumin), or blood lipids (total cholesterol, triglycerides, HDL-cholesterol). Resting cardiovascular variables decreased similarly for both groups. These data suggest that 9 weeks of 500 mg.day-1 of gamma-oryzanol supplementation does not influence performance or related physiological parameters in moderately weight-trained males.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"7 4","pages":"318-29"},"PeriodicalIF":0.0,"publicationDate":"1997-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.7.4.318","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20335245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 55