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International journal of sport nutrition最新文献

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The effect of encapsulated soluble fiber on carohydrate metabolism during exercise. 胶囊性可溶性纤维对运动中碳水化合物代谢的影响。
International journal of sport nutrition Pub Date : 1999-03-01 DOI: 10.1123/ijsn.9.1.13
A C Parcell, M L Ray, K A Moss, T M Ruden, R L Sharp, D S King
{"title":"The effect of encapsulated soluble fiber on carohydrate metabolism during exercise.","authors":"A C Parcell,&nbsp;M L Ray,&nbsp;K A Moss,&nbsp;T M Ruden,&nbsp;R L Sharp,&nbsp;D S King","doi":"10.1123/ijsn.9.1.13","DOIUrl":"https://doi.org/10.1123/ijsn.9.1.13","url":null,"abstract":"<p><p>Previous investigations have reported that soluble fiber reduces the plasma glucose and insulin changes after an oral glucose load. To improve the palatability of a soluble-fiber feeding, this study addressed how a combined, soluble fiber (delivered in capsule form) and a preexercise CHO feeding would affect metabolic responses during exercise. On 3 different days, participants ingested a placebo (CON), 75 g liquid CHO (GLU), or 75 g liquid CHO with 14.5 g encapsulated guar gum (FIB) 45 min before cycling for 60 min at 70% VO2 peak. Peak concentrations of plasma glucose and insulin were similar and significantly greater than CON preexercise (p < 05). Similarities in carbohydrate reliance were observed in GLU and FIB. Muscle glycogen use did not differ significantly among trials. These results demonstrate that encapsulated soluble fiber delivered with liquid CHO feeding does not affect plasma glucose, insulin, or muscle glycogen utilization during exercise.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 1","pages":"13-23"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.1.13","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20908403","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: 3
Cross-validation of modified fatness-specific bioelectrical impedance equations. 改进的肥胖特异性生物电阻抗方程的交叉验证。
International journal of sport nutrition Pub Date : 1999-03-01 DOI: 10.1123/ijsn.9.1.48
D W Lockner, V H Heyward, S E Griffin, M B Marques, L M Stolarczyk, D R Wagner
{"title":"Cross-validation of modified fatness-specific bioelectrical impedance equations.","authors":"D W Lockner,&nbsp;V H Heyward,&nbsp;S E Griffin,&nbsp;M B Marques,&nbsp;L M Stolarczyk,&nbsp;D R Wagner","doi":"10.1123/ijsn.9.1.48","DOIUrl":"https://doi.org/10.1123/ijsn.9.1.48","url":null,"abstract":"<p><p>The Segal fatness-specific bioelectrical impedance (BIA) equations are useful for predicting fat-free mass (FFM). Stolarczyk et al. Proposed a modified method of averaging the two equations for individuals who are neither lean nor obese, thus eliminating the need to know % BF a priori. To cross-validate this modification, we compared FFM determined using the averaging method versus hydrostatic weighing for 76 adults. Per the averaging method, accuracy for males was excellent (r =.91, SEE = 2.7 kg, E = 2.7 kg), with 78% of individuals within +/- .5% BF predicted by hydrostatic weighing. Accuracy for females was lower (r =.88, SEE = 3.0 kg, E = 3.1 kg), with % BF of 51% within +/- 3.5% of the reference method. The relative ease and practicality of the averaging method and the results of this study indicate this method may be useful with a diverse group.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 1","pages":"48-59"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.1.48","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20908406","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: 6
Publication of adverse events in exercise studies involving nutritional agents. 发表涉及营养制剂的运动研究中的不良事件。
International journal of sport nutrition Pub Date : 1999-03-01 DOI: 10.1123/ijsn.9.1.89
H J Engels
{"title":"Publication of adverse events in exercise studies involving nutritional agents.","authors":"H J Engels","doi":"10.1123/ijsn.9.1.89","DOIUrl":"https://doi.org/10.1123/ijsn.9.1.89","url":null,"abstract":"","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 1","pages":"89-91"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.1.89","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21071436","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: 1
The efficacy of carbohydrate supplementation and chronic high- carbohydrate diets for improving endurance performance. 碳水化合物补充和长期高碳水化合物饮食对提高耐力表现的功效。
International journal of sport nutrition Pub Date : 1999-03-01 DOI: 10.1123/ijsn.9.1.92
K A Jacobs, W M Sherman
{"title":"The efficacy of carbohydrate supplementation and chronic high- carbohydrate diets for improving endurance performance.","authors":"K A Jacobs,&nbsp;W M Sherman","doi":"10.1123/ijsn.9.1.92","DOIUrl":"https://doi.org/10.1123/ijsn.9.1.92","url":null,"abstract":"<p><p>Carbohydrate (CHO) is the body's most limited fuel and the most heavily metabolized during moderate-intensity exercise. For this reason it is recommended that endurance athletes consume a high-CHO diet (8-10 g CHO . kg body weight-1 . day-1) to enhance training and performance. A review of the literature supports the benefits of CHO supplementation on endurance performance. The benefits of chronic high-CHO diets on endurance performance are not as clear. Recent evidence suggests that a high-CHO diet may be necessary for optimal adaptations to training. However, the paucity of date in this area precludes any concrete conclusions. The practicality of high-CHO diets is not well understood. The available evidence would indicate that a high-CHO diet is the best dietary recommendation for endurance athletes.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 1","pages":"92-115"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.1.92","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21071438","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: 64
Fasting and energy intake influence bone turnover in lightweight male rowers. 禁食和能量摄入影响轻量级男子赛艇运动员的骨转换。
International journal of sport nutrition Pub Date : 1998-12-01 DOI: 10.1123/ijsn.8.4.377
S M Talbott, S A Shapses
{"title":"Fasting and energy intake influence bone turnover in lightweight male rowers.","authors":"S M Talbott,&nbsp;S A Shapses","doi":"10.1123/ijsn.8.4.377","DOIUrl":"https://doi.org/10.1123/ijsn.8.4.377","url":null,"abstract":"<p><p>The purpose of this study was to investigate the influence of an acute 24-hr fast versus usual 24-hr dietary intake on markers of bone turnover in collegiate lightweight male rowers. Bone turnover was measured by serum osteocalcin (OC) and urinary excretion of pyridinium cross-links (pyridinoline [PYD¿ and deoxypyridinoline ¿DPD]). Fasting subjects (F) (n = 14) reduced body weight by 1.7 +/- 0.5 kg but there was no significant change among nonfasting subjects (NF) (n = 13). Following 24 hr of fasting, PYD and DPD were lower in F (14.1 +/- 2.2 and 5.2 +/- 0.7 nmol/mmol creatinine, respectively) compared to NF (16.4 +/- 3.6 and 6.0 +/- 0.8 nmol/mmol creatinine)(p<.05). Fasting also reduce OC levels (4.8 +/- 0.4 ng/ml) compared to NF (6.1 +/- 0.9 ng/ml) (p<.01). Stepwise regression analysis of NF dietary intake indicated that energy intake explained a greater portion of the variation in bone turnover for PYD (34%), DPD (36%), and oseocalcin (46%) compared to other nutrients (p<.05). These results indicate that bone turnover is reduced by 24 hr of fasting and suggest a role for dietary energy intake in regulating bone turnover.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 4","pages":"377-87"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.4.377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20751749","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: 41
Energy and nutrient intakes of the United States National Women's Artistic Gymnastics Team. 美国国家女子艺术体操队的能量和营养摄入量。
International journal of sport nutrition Pub Date : 1998-12-01 DOI: 10.1123/ijsn.8.4.331
S S Jonnalagadda, D Bernadot, M Nelson
{"title":"Energy and nutrient intakes of the United States National Women's Artistic Gymnastics Team.","authors":"S S Jonnalagadda,&nbsp;D Bernadot,&nbsp;M Nelson","doi":"10.1123/ijsn.8.4.331","DOIUrl":"https://doi.org/10.1123/ijsn.8.4.331","url":null,"abstract":"<p><p>The nutrient intakes and dietary practices of elite, U.S. national team, artistic female gymnasts (n = 33) were evaluated using 3-day food records. The gymnasts' reported energy intake was 43.4 kcal/kg (total 1,678 kcal/day), which was 20% below the estimated energy requirement. The contributions of protein, fat, and carbohydrate to total energy intake were 17%, 18%, and 66%, respectively. All reported vitamin intakes, except vitamin E, were above the RDA. The reported mineral intakes, especially calcium, zinc, and magnesium, were less than 100% of the RDA. The overall nutrient densities of the subjects' diets were higher than expected. Eighty-two percent of the gymnasts reported taking nonprescription vitamin and mineral supplements, and 10% reported taking prescription vitamin and mineral supplements. Forty-eight percent of the gymnasts reported being on a self-prescribed diet. Compared to NHANES III, the reported nutrient intake of these gymnasts was different from that of the average U.S. adolescent female. In summary, certain key nutrients such as calcium, iron, and zinc should be given more attention to prevent nutrient deficiencies and subsequent health consequences.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 4","pages":"331-44"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.4.331","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20751745","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: 62
Interrelationships among food intake, somatic traits, and physical fitness in 10.5- to 15.5-year old children from Eastern Poland. 波兰东部10.5 ~ 15.5岁儿童食物摄入、躯体特征和身体健康的相互关系
International journal of sport nutrition Pub Date : 1998-12-01 DOI: 10.1123/ijsn.8.4.388
G Raczyński, J Czeczelewski, M Sklad, R Stupnicki
{"title":"Interrelationships among food intake, somatic traits, and physical fitness in 10.5- to 15.5-year old children from Eastern Poland.","authors":"G Raczyński,&nbsp;J Czeczelewski,&nbsp;M Sklad,&nbsp;R Stupnicki","doi":"10.1123/ijsn.8.4.388","DOIUrl":"https://doi.org/10.1123/ijsn.8.4.388","url":null,"abstract":"<p><p>The aim of the study was to establish the relationships between energy intake and dietary quality with somatic variables and physical fitness. Energy intake and nutrition quality were assessed from 24-hr dietary recall questionnaires, and physical fitness was measured by applying the EIROFIT tests. Interrelationships between all those variables (simple, partial, and multiple correlation coefficients) were computed from standardized values. The somatic and physical fitness variables related more strongly on the nutrition quality than on the energy intake. Well-nourished children were taller, heavier, and more physically fit than the poorly nourished ones. We believe that dietary quality affected physical fitness indirectly by influencing somatic development. Energy intake did not contribute significantly to the total variance of the physical fitness factor.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 4","pages":"388-400"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.4.388","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20751750","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: 3
Nutrition support programs for young adult athletes. 年轻成年运动员的营养支持计划。
International journal of sport nutrition Pub Date : 1998-12-01 DOI: 10.1123/ijsn.8.4.416
N Clark
{"title":"Nutrition support programs for young adult athletes.","authors":"N Clark","doi":"10.1123/ijsn.8.4.416","DOIUrl":"https://doi.org/10.1123/ijsn.8.4.416","url":null,"abstract":"<p><p>After graduating from college and entering the work force, young adult athletes often struggle with the task of fueling themselves optimally for top performance and weight control. The stresses and time constraints of work, family, and social responsibilities often result in eating fast foods on the run. These young adults can benefit from nutrition education programs in the worksite, at health clubs, in the community, and via the media. Dietitians who specialize in sport nutrition have particular appeal to these athletes, who are struggling to each well, exercise well, and stay lean yet put little time or effort into their food program. This article includes two case studies of young adults and the dietary recommendations that taught them how to make wise food choices, fuel themselves well for high energy, and control their weight.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 4","pages":"416-25"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.4.416","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20751752","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: 8
Effects of exercise on dietary protein requirements. 运动对膳食蛋白质需求的影响。
International journal of sport nutrition Pub Date : 1998-12-01 DOI: 10.1123/ijsn.8.4.426
P W Lemon
{"title":"Effects of exercise on dietary protein requirements.","authors":"P W Lemon","doi":"10.1123/ijsn.8.4.426","DOIUrl":"https://doi.org/10.1123/ijsn.8.4.426","url":null,"abstract":"<p><p>This paper reviews the factors (exercise intensity, carbohydrate availability, exercise type, energy balance, gender, exercise training, age, and timing of nutrient intake or subsequent exercise sessions) thought to influence protein need. Although there remains some debate, recent evidence suggests that dietary protein need increases with rigorous physical exercise. Those involved in strength training might need to consume as much as 1.6 to 1.7 g protein x kg(-1) x day(-1) (approximately twice the current RDA) while those undergoing endurance training might need about 1.2 to 1.6 g x kg(-1) x day(-1) (approximately 1.5 times the current RDA). Future longitudinal studies are needed to confirm these recommendations and asses whether these protein intakes can enhance exercise performance. Despite the frequently expressed concern about adverse effects of high protein intake, there is no evidence that protein intakes in the range suggested will have adverse effects in healthy individuals.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 4","pages":"426-47"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.4.426","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20751701","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: 150
An investigation into the effects of sodium citrate ingestion on high-intensity exercise performance. 枸橼酸钠摄入对高强度运动表现影响的研究。
International journal of sport nutrition Pub Date : 1998-12-01 DOI: 10.1123/ijsn.8.4.356
K van Someren, K Fulcher, J McCarthy, J Moore, G Horgan, R Langford
{"title":"An investigation into the effects of sodium citrate ingestion on high-intensity exercise performance.","authors":"K van Someren,&nbsp;K Fulcher,&nbsp;J McCarthy,&nbsp;J Moore,&nbsp;G Horgan,&nbsp;R Langford","doi":"10.1123/ijsn.8.4.356","DOIUrl":"https://doi.org/10.1123/ijsn.8.4.356","url":null,"abstract":"<p><p>This study examined the effect of sodium citrate ingestion on high-intensity cycling performance in repeated 45-sec bouts. Twelve subjects (9 male and 3 female) ingested either a sodium citrate solution (0.3 g x kg-1 body mass[BM]) or a placebo 90 min prior to exercise. Postingestion blood HCO3 concentrations were significantly higher in the citrate trial (p<.01), but there was no difference over the five bouts (p<.05) and postexercise blood lactate concentrations significantly increased over the five bouts (p<0.01), but there were no differences between trials. We conclude that sodium citrate ingestion (0.3 g x kg-1 BM) is not an effective ergogenic aid for high-intensity, intermittent exercise as simulated in this protocol.</p>","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"8 4","pages":"356-63"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.8.4.356","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20751747","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: 20
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