International journal of sport nutrition最新文献_第2页

Ginseng treatment improves psychomotor performance at rest and during graded exercise in young athletes. 人参治疗可改善年轻运动员在休息和分级运动时的精神运动表现。

International journal of sport nutrition Pub Date : 1999-12-01 DOI: 10.1123/ijsn.9.4.371

A W Ziemba, J Chmura, H Kaciuba-Uscilko, K Nazar, P Wisnik, W Gawronski

{"title":"Ginseng treatment improves psychomotor performance at rest and during graded exercise in young athletes.","authors":"A W Ziemba, J Chmura, H Kaciuba-Uscilko, K Nazar, P Wisnik, W Gawronski","doi":"10.1123/ijsn.9.4.371","DOIUrl":"https://doi.org/10.1123/ijsn.9.4.371","url":null,"abstract":"This study was designed to determine the effect of ginseng treatment on multiple choice reaction time (RT) during exercise. Fifteen soccer players (age 19.07 +/- 0.62 yrs) were placed in a double-blind manner into one of two groups: ginseng (n = 7), receiving 350 mg of ginseng daily for 6 weeks, or placebo (n = 8), receiving a placebo daily for 6 weeks. Before and after the treatment all the subjects performed an incremental bicycle ergometer exercise with intensity increasing 50 W every 3 min until volitional exhaustion. RT was measured before exercise, and then in the last 2 min of each exercise load. Maximal oxygen uptake (VO2max) and lactate threshold (LAT) were also determined from the exercise test. Ginseng treatment was found to shorten RT at rest and during exercise, shifting the exercise load associated with the shortest RT toward higher exercise loads. Neither ginseng nor placebo influenced VO2 max and LAT. In conclusion, ginseng extract does improve psychomotor performance during exercise without affecting exercise capacity.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 4","pages":"371-7"},"PeriodicalIF":0.0,"publicationDate":"1999-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.4.371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21515258","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

The effect of a carbohydrate--arginine supplement on postexercise carbohydrate metabolism. 补充碳水化合物精氨酸对运动后碳水化合物代谢的影响。

International journal of sport nutrition Pub Date : 1999-09-01 DOI: 10.1123/ijsn.9.3.241

B B Yaspelkis, J L Ivy

引用次数: 38

A comparison of the gastric emptying characteristics of selected sports drinks. 几种运动饮料胃排空特性的比较。

International journal of sport nutrition Pub Date : 1999-09-01 DOI: 10.1123/ijsn.9.3.263

R Murray, W Bartoli, J Stofan, M Horn, D Eddy

引用次数: 64

Magnesium, zinc, and copper status in women involved in different sports. 参与不同运动的女性体内镁、锌、铜的含量。

International journal of sport nutrition Pub Date : 1999-09-01 DOI: 10.1123/ijsn.9.3.295

R J Nuviala, M G Lapieza, E Bernal

引用次数: 42

Calcium losses resulting from an acute bout of moderate-intensity exercise. 中等强度的剧烈运动引起的钙流失。

International journal of sport nutrition Pub Date : 1999-09-01 DOI: 10.1123/ijsn.9.3.275

D B Bullen, M L O'Toole, K C Johnson

引用次数: 0

Decreased resting metabolic rate in ballet dancers with menstrual irregularity. 月经不规律的芭蕾舞者静息代谢率降低。

International journal of sport nutrition Pub Date : 1999-09-01 DOI: 10.1123/ijsn.9.3.285

K H Myburgh, C Berman, I Novick, T Noakes, E Lambert

{"title":"Decreased resting metabolic rate in ballet dancers with menstrual irregularity.","authors":"K H Myburgh, C Berman, I Novick, T Noakes, E Lambert","doi":"10.1123/ijsn.9.3.285","DOIUrl":"https://doi.org/10.1123/ijsn.9.3.285","url":null,"abstract":"We studied 21 ballet dancers aged 19.4 +/- 1.4 years, hypothesizing that undernutrition was a major factor in menstrual irregularity in this population. Menstrual history was determined by questionnaire. Eight dancers had always been regular (R). Thirteen subjects had a history of menstrual irregularity (HI). Of these, 2 were currently regularly menstruating, 3 had short cycles, 6 were oligomenorrheic, and 2 were amenorrheic. Subjects completed a weighed dietary record and an Eating Attitudes Test (EAT). The following physiological parameters were measured: body composition by anthropometry, resting metabolic rate (RMR) by open-circuit indirect calorimetry, and serum thyroid hormone concentrations by radioimmunoassay. R subjects had significantly higher RMR than HI subjects. Also, HI subjects had lower RMR than predicted by fat-free mass, compared to the R subjects. Neither reported energy intake nor serum thyroid hormone concentrations were different between R and HI subjects. EAT scores varied and were not different between groups. We concluded that in ballet dancers, low RMR is more strongly associated with menstrual irregularity than is current reported energy intake or serum thyroid hormone concentrations.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 3","pages":"285-94"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.3.285","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21341568","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: 29

Creatine supplementation and swimming performance. 补充肌酸与游泳表现。

International journal of sport nutrition Pub Date : 1999-09-01 DOI: 10.1123/ijsn.9.3.251

N M Leenders, D R Lamb, T E Nelson

引用次数: 31

Effects of in-season (5 weeks) creatine and pyruvate supplementation on anaerobic performance and body composition in American football players. 赛季(5周)补充肌酸和丙酮酸对美式橄榄球运动员无氧表现和身体成分的影响。

International journal of sport nutrition Pub Date : 1999-06-01 DOI: 10.1123/ijsn.9.2.146

M H Stone, K Sanborn, L L Smith, H S O'Bryant, T Hoke, A C Utter, R L Johnson, R Boros, J Hruby, K C Pierce, M E Stone, B Garner

{"title":"Effects of in-season (5 weeks) creatine and pyruvate supplementation on anaerobic performance and body composition in American football players.","authors":"M H Stone, K Sanborn, L L Smith, H S O'Bryant, T Hoke, A C Utter, R L Johnson, R Boros, J Hruby, K C Pierce, M E Stone, B Garner","doi":"10.1123/ijsn.9.2.146","DOIUrl":"https://doi.org/10.1123/ijsn.9.2.146","url":null,"abstract":"The purpose of this investigation was to study the efficacy of two dietary supplements on measures of body mass, body composition, and performance in 42 American football players. Group CM (n = 9) received creatine monohydrate, Group P (n = 11) received calcium pyruvate, Group COM (n = 11) received a combination of calcium pyruvate (60%) and creatine (40%), and Group PL received a placebo. Tests were performed before (T1) and after (T2) the 50 week supplementation period, during which the subjects continued their normal training schedules. Compared to P and PL, CM and COM showed significantly greater increases for body mass, lean body mass, 1 repetition maximum (RM) bench press, combined 1 RM squat and bench press, and static vertical jump (SVJ) power output. Peak rate of force development for SVJ was significantly greater for CM compared to P and PL. Creatine and the combination supplement enhanced training adaptations associated with body mass/composition, maximum strength, and SVJ; however, pyruvate supplementation alone was ineffective.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 2","pages":"146-65"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.2.146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21230820","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: 149

Influence of exercise mode and carbohydrate on the immune response to prolonged exercise. 运动方式和碳水化合物对长时间运动免疫反应的影响。

International journal of sport nutrition Pub Date : 1999-06-01 DOI: 10.1123/ijsn.9.2.213

D A Henson, D C Nieman, A D Blodgett, D E Butterworth, A Utter, J M Davis, G Sonnenfeld, D S Morton, O R Fagoaga, S L Nehlsen-Cannarella

{"title":"Influence of exercise mode and carbohydrate on the immune response to prolonged exercise.","authors":"D A Henson, D C Nieman, A D Blodgett, D E Butterworth, A Utter, J M Davis, G Sonnenfeld, D S Morton, O R Fagoaga, S L Nehlsen-Cannarella","doi":"10.1123/ijsn.9.2.213","DOIUrl":"https://doi.org/10.1123/ijsn.9.2.213","url":null,"abstract":"The influence of exercise mode and 6% carbohydrate (C) versus placebo (P) beverage ingestion on lymphocyte proliferation, natural killer cell cytotoxicity (NKCA), Interleukin (IL)-1beta production, and hormonal responses to 2.5 hr of intense running and cycling (approximately 75% VO2max) was measured in 10 triathletes serving as their own controls. The C versus P condition (but not exercise mode) resulted in higher plasma glucose concentrations, lower plasma cortisol concentrations, reduced postexercise lymphocytosis and NKCA, and a lessened T-cell reduction during recovery, No condition or mode effects were observed for concanavalin A and phytohemagglutinin-induced lymphocyte proliferation. Significant mode (but not condition) effects were observed for lipopolysaccharide-induced IL-1beta production over time. However, when expressed per monocyte, the mode effect was abolished and a sustained suppression in IL-1beta/monocyte was observed in all sessions throughout recovery. These data indicate that carbohydrate ingestion significantly affects plasma glucose and cortisol concentrations, blood lymphocyte counts, and NKCA, whereas exercise mode has no effect on these parameters.","PeriodicalId":14321,"journal":{"name":"International journal of sport nutrition","volume":"9 2","pages":"213-28"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1123/ijsn.9.2.213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21295450","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: 52

Nutritional intake of elite Japanese track-and-field athletes. 日本优秀田径运动员的营养摄入。

International journal of sport nutrition Pub Date : 1999-06-01 DOI: 10.1123/ijsn.9.2.202

K Sugiura, I Suzuki, K Kobayashi

引用次数: 43