International journal of sport nutrition and exercise metabolism最新文献_第6页

Pharmacokinetic Profile of Caffeine and Its Two Main Metabolites in Dried Blood Spots After Five Different Oral Caffeine Administration Forms-A Randomized Crossover Study. 咖啡因及其两种主要代谢物在五种不同咖啡因口服给药形式下干燥血斑中的药代动力学特征--随机交叉研究

IF 3 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2024-01-12 Print Date: 2024-03-01 DOI: 10.1123/ijsnem.2023-0141

Chiara Tuma, Andreas Thomas, Lasse Trede, Hans Braun, Mario Thevis

{"title":"Pharmacokinetic Profile of Caffeine and Its Two Main Metabolites in Dried Blood Spots After Five Different Oral Caffeine Administration Forms-A Randomized Crossover Study.","authors":"Chiara Tuma, Andreas Thomas, Lasse Trede, Hans Braun, Mario Thevis","doi":"10.1123/ijsnem.2023-0141","DOIUrl":"10.1123/ijsnem.2023-0141","url":null,"abstract":"Caffeine is an ergogenic substance that is consumed globally in many forms. The use of buccally absorbable formulations instead of gastrointestinal uptake has become increasingly popular over the years, especially when accelerated absorption with minimal gastrointestinal stress is desired. This study investigated the impact of five different formulations and administration routes of caffeine on the whole blood concentrations of caffeine, paraxanthine, and theobromine: caffeinated capsules, tablets, shots, pouches, and chewing gums. A uniform dose of caffeine (200 mg) was administered to 16 healthy recreational athletes (26.0 ± 2.1 years) using a randomized crossover design. Samples were taken in the form of dried blood spots at 16 different time points in a 2-hr timeframe after drug administration. The samples were analyzed using a validated liquid chromatography-tandem mass spectrometry method. The results for caffeine showed no significant differences in the overall bioavailability (area under the concentration-time curve), maximal concentration, and time to maximum concentration. However, when analyzing the bioavailability of caffeine in the first 5, 10, and 15 min, the liquid caffeine formulation was superior to other administered forms (p < .05). This indicates that caffeine solubility has a major influence on its absorption rate. In sports, the rate of caffeine absorption must be considered, not only when ingesting anhydrous caffeine, but also when choosing buccal absorption. These findings imply that general guidelines for ergogenic caffeine use should consider the formulation used and, accordingly, the corresponding route of absorption.","PeriodicalId":14334,"journal":{"name":"International journal of sport nutrition and exercise metabolism","volume":" ","pages":"101-110"},"PeriodicalIF":3.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139432270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Timing and Types of Protein Supplementation on Improving Muscle Mass, Strength, and Physical Performance in Adults Undergoing Resistance Training: A Network Meta-Analysis. 补充蛋白质的时间和类型对成人抗阻训练中肌肉质量、力量和体能表现的影响:网络荟萃分析。

IF 3 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-12-01 Print Date: 2024-01-01 DOI: 10.1123/ijsnem.2023-0118

Huan-Huan Zhou, Yuxiao Liao, Xiaolei Zhou, Zhao Peng, Shiyin Xu, Shaojun Shi, Liegang Liu, Liping Hao, Wei Yang

{"title":"Effects of Timing and Types of Protein Supplementation on Improving Muscle Mass, Strength, and Physical Performance in Adults Undergoing Resistance Training: A Network Meta-Analysis.","authors":"Huan-Huan Zhou, Yuxiao Liao, Xiaolei Zhou, Zhao Peng, Shiyin Xu, Shaojun Shi, Liegang Liu, Liping Hao, Wei Yang","doi":"10.1123/ijsnem.2023-0118","DOIUrl":"10.1123/ijsnem.2023-0118","url":null,"abstract":"Precise protein supplementation strategies for muscle improvement are still lacking. The timing or type of protein supplementation has been debated as a window of opportunity to improve muscle mass, strength, and physical performance. We conducted a network meta-analysis of randomized controlled trials with protein supplements and resistance training. PubMed, Web of Science, Cochrane Library, and SPORTDiscus databases were searched until May 1, 2023. We included 116 eligible trials with 4,711 participants that reported on 11 timing and 14 types of protein supplementation. Compared with placebo, protein supplementation after exercise (mean difference [MD]: 0.54 kg [95% confidence intervals 0.10, 0.99] for fat-free mass, MD: 0.34 kg [95% confidence intervals 0.10, 0.58] for skeletal muscle mass) and at night (MD: 2.85 kg [0.49, 5.22] for handgrip strength, MD: 12.12 kg [3.26, 20.99] for leg press strength) was most effective in improving muscle mass and strength, respectively (moderate certainty). Milk proteins (milk, whey protein, yogurt, casein, and bovine colostrum), red meat, and mixed protein were effective for gains in both muscle mass and strength (moderate certainty). No timing or type of protein showed a significant enhancement in physical performance (timed up-to-go test, 6-min walk test, and gait speed). Pre/postexercise and Night are key recommended times of protein intake to increase muscle mass and strength, respectively. Milk proteins are the preferred types of protein supplements for improving muscle mass and strength. Future randomized controlled trials that directly compare the effects of protein timing or types are needed. This trial was registered at International Prospective Register of Systematic Reviews as CRD42022358766.","PeriodicalId":14334,"journal":{"name":"International journal of sport nutrition and exercise metabolism","volume":" ","pages":"54-64"},"PeriodicalIF":3.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138470281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Acknowledgments 致谢

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-11-29 DOI: 10.1123/ijsnem.2023-0240

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Erratum. Effect of Moderate Versus Vigorous Exercise Intensity on Body Composition in Young Untrained Adults: The Activating Brown Adipose Tissue Through Exercise (ACTIBATE) Randomized Controlled Trial. 勘误表。中等强度与剧烈运动强度对未经训练的年轻成人身体成分的影响：运动激活棕色脂肪组织（ACTIBATE）随机对照试验。

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-10-06 Print Date: 2023-11-01 DOI: 10.1123/ijsnem.2023-0209

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Significant Changes in Resting Metabolic Rate Over a Competitive Match Week Are Accompanied by an Absence of Nutritional Periodization in Male Professional Soccer Players. 男性职业足球运动员在比赛周休息代谢率的显著变化伴随着缺乏营养周期。

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-09-21 DOI: 10.1123/ijsnem.2023-0069

Jennie L Carter, David J Lee, Craig G Perrin, Mayur K Ranchordas, Matthew Cole

{"title":"Significant Changes in Resting Metabolic Rate Over a Competitive Match Week Are Accompanied by an Absence of Nutritional Periodization in Male Professional Soccer Players.","authors":"Jennie L Carter, David J Lee, Craig G Perrin, Mayur K Ranchordas, Matthew Cole","doi":"10.1123/ijsnem.2023-0069","DOIUrl":"10.1123/ijsnem.2023-0069","url":null,"abstract":"Resting metabolic rate (RMR) is an important component of total daily energy expenditure; however, it is currently not understood how it varies across a typical competitive match week in professional soccer players. For the first time, we aimed to assess RMR throughout an in-season competitive week in professional soccer players. Additionally, we aimed to assess energy and carbohydrate intake across the same week. Twenty-four professional soccer players from an English Premier League club (age: 18 ± 1.6 years) completed the study. RMR was assessed each morning of a typical competitive match week (match day [MD] -3, -2, -1, +1, +2, and + 3), and dietary intake (including MD) was assessed daily via the remote food photography method and 24-hr recall. Daily training load was quantified using Global Positioning System, daily muscle soreness ratings were recorded, and body composition was assessed via dual-energy X-ray absorptiometry. There was a significant (p = .0004) increase in mean RMR of ∼261 kcal/day on MD + 1, compared with MD - 1. Additionally, volume of oxygen consumed significantly increased at MD + 1 (p = .0002) versus MD - 1. There were no significant differences in daily energy or carbohydrate intake across the competitive week (p > .05), with inadequate carbohydrate intakes on MD - 1 (∼3.9 g/kg body mass), MD (∼4.2 g/kg body mass), and MD + 1 (∼3.6 g/kg body mass) in relation to current recommendations. We report, for the first time, that RMR is significantly increased following a competitive match in professional soccer players. In addition, we confirm previous findings to reinforce that players exhibit inadequate nutrition periodization practices, which may impair physical performance and recovery.","PeriodicalId":14334,"journal":{"name":"International journal of sport nutrition and exercise metabolism","volume":" ","pages":"349-359"},"PeriodicalIF":2.5,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41175942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Moderate Versus Vigorous Exercise Intensity on Body Composition in Young Untrained Adults: The Activating Brown Adipose Tissue Through Exercise (ACTIBATE) Randomized Controlled Trial. 中等强度与剧烈运动强度对未经训练的年轻成人身体成分的影响：运动激活棕色脂肪组织（ACTIBATE）随机对照试验。

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-09-21 Print Date: 2023-11-01 DOI: 10.1123/ijsnem.2023-0085

Francisco J Amaro-Gahete, María Ruiz-Ruiz, Amalia Cano-Nieto, Guillermo Sanchez-Delgado, Juan M Alcantara, Francisco M Acosta, Idoia Labayen, Francisco B Ortega, Jonatan R Ruiz

{"title":"Effect of Moderate Versus Vigorous Exercise Intensity on Body Composition in Young Untrained Adults: The Activating Brown Adipose Tissue Through Exercise (ACTIBATE) Randomized Controlled Trial.","authors":"Francisco J Amaro-Gahete, María Ruiz-Ruiz, Amalia Cano-Nieto, Guillermo Sanchez-Delgado, Juan M Alcantara, Francisco M Acosta, Idoia Labayen, Francisco B Ortega, Jonatan R Ruiz","doi":"10.1123/ijsnem.2023-0085","DOIUrl":"10.1123/ijsnem.2023-0085","url":null,"abstract":"The present study aimed to investigate the effect of a 24-week aerobic + resistance training programs at moderate versus vigorous intensity on body composition, and the persistence of the changes after a 10-month free-living period, in young untrained adults. This report is based on a secondary analysis from the activating brown adipose tissue through exercise (ACTIBATE) single-center unblinded randomized controlled trial. A total of 144 young adults (65.6% women) aged 18-25 years were randomly allocated to three different groups: (a) aerobic + resistance exercise training program based on the international physical activity recommendations at vigorous intensity (Ex-Vigorous group), (b) at moderate intensity (Ex-Moderate group), and (c) control group (no exercise). Body composition outcomes were determined by a dual-energy X-ray absorptiometry scanner. Both Ex-Vigorous and Ex-Moderate decreased body weight, fat mass, and visceral adipose tissue mass in a similar manner (all p < .04). After a 10-month free-living period, these parameters returned to baseline levels in both exercise groups (all ps < .03). No differences between the exercise groups and the control group were noted in lean mass changes (all ps > .1). A 24-week aerobic + resistance training intervention based on the international physical activity recommendations was enough to improve body weight, fat mass, and visceral adipose tissue mass in untrained young adults, independently of the exercise intensity (moderate vs. vigorous).","PeriodicalId":14334,"journal":{"name":"International journal of sport nutrition and exercise metabolism","volume":" ","pages":"331-341"},"PeriodicalIF":2.5,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41144007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Total Energy Expenditure and Nutritional Intake in Continuous Multiday Ultramarathon Events. 连续多日超马拉松比赛的总能量消耗和营养摄入。

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-09-14 Print Date: 2023-11-01 DOI: 10.1123/ijsnem.2023-0063

Andrew W Best, Amanda McGrosky, Zane Swanson, Rebecca Rimbach, Katie McConaughy, Joe McConaughy, Cara Ocobock, Herman Pontzer

{"title":"Total Energy Expenditure and Nutritional Intake in Continuous Multiday Ultramarathon Events.","authors":"Andrew W Best, Amanda McGrosky, Zane Swanson, Rebecca Rimbach, Katie McConaughy, Joe McConaughy, Cara Ocobock, Herman Pontzer","doi":"10.1123/ijsnem.2023-0063","DOIUrl":"10.1123/ijsnem.2023-0063","url":null,"abstract":"Continuous multiday ultramarathon competitions are increasingly popular and impose extreme energetic and nutritional demands on competitors. However, few data have been published on energy expenditure during these events. Here, we report doubly labeled water-derived measures of total energy expenditure (in kilocalories per day) and estimated physical activity level (PAL: total energy expenditure/basal metabolic rate) collected from five elite and subelite finishers (four males and one female, age 34.6 ± 4.9 years)-and nutritional intake data from the winner-of the Cocodona 250, a ∼402-km race in Arizona, and from a fastest-known-time record (one male, age 30 years) on the ∼1,315-km Arizona Trail. PAL during these events exceeded four times basal metabolic rate (Cocodona range: 4.34-6.94; Arizona Trail: 5.63). Combining the results with other doubly labeled water-derived total energy expenditure data from ultraendurance events show a strong inverse relationship between event duration and PAL (r2 = .68, p < .0001). Cocodona race duration was inversely, though not significantly, associated with PAL (r2 = .70, p = .08). Water turnover varied widely between athletes and was not explained by PAL or body mass. The Cocodona race winner met ∼53% of energy demand via dietary intake, 85.6% of which was carbohydrate, while ∼47% of energy demand was met via catabolism of body energy stores. Together, these results illustrate the energetic deficits incurred during competitive continuous multiday ultramarathon efforts and implicate macronutrient absorption and/or storage as key factors in ultramarathon performance.","PeriodicalId":14334,"journal":{"name":"International journal of sport nutrition and exercise metabolism","volume":" ","pages":"342-348"},"PeriodicalIF":2.5,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10246099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of a 24-Week Concurrent Exercise Intervention on Neck Adiposity and Its Distribution in Young Adults: The ACTIBATE Randomized Controlled Trial. 24周同步运动干预对年轻人颈部肥胖及其分布的影响:ACTIBATE随机对照试验

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-09-01 DOI: 10.1123/ijsnem.2022-0246

Maria Jose Arias-Tellez, Francisco M Acosta, Elisa Merchan-Ramirez, Borja Martínez-Téllez, Guillermo-Sánchez Delgado, Jose M Llamas-Elvira, Jonatan R Ruiz

{"title":"Effect of a 24-Week Concurrent Exercise Intervention on Neck Adiposity and Its Distribution in Young Adults: The ACTIBATE Randomized Controlled Trial.","authors":"Maria Jose Arias-Tellez, Francisco M Acosta, Elisa Merchan-Ramirez, Borja Martínez-Téllez, Guillermo-Sánchez Delgado, Jose M Llamas-Elvira, Jonatan R Ruiz","doi":"10.1123/ijsnem.2022-0246","DOIUrl":"https://doi.org/10.1123/ijsnem.2022-0246","url":null,"abstract":"Neck adipose tissue (NAT) accumulation and neck circumference are independent predictors of cardiometabolic risk (CMR) and low-grade chronic inflammation in young adults. The present study examines whether a 24-week concurrent exercise intervention can reduce NAT volume and neck circumference in young adults, and whether any changes in these variables are related to changes in body composition, CMR, and the inflammatory profile. Seventy-four participants (51 women, age 22 ± 2 years) were included in the main analyses, after being randomly assigned to either a (a) control (n = 34), (b) moderate-intensity exercise (n = 19), or (c) vigorous-intensity exercise (n = 21) group. Participants in the exercise groups trained 3-4 days/week (endurance + resistance exercise training). NAT volume and NAT distribution across different depots were estimated using computed tomography before and after the intervention. Anthropometric variables, body composition (determined by dual-energy X-ray absorptiometry), and CMR/inflammatory markers were also recorded. The exercise intervention did not reduce the total NAT volume, nor was NAT distribution affected (p > .05). However, it did reduce neck circumference in the vigorous-intensity exercise group compared with the moderate-intensity exercise and control groups (by 0.8 and 1 cm, respectively, p ≤ .05). Changes in total NAT and neck circumference were positively, albeit weakly, related (adj. R2: .05-.21, all p ≤ .05) to changes in body weight and adiposity, leptin (only total NAT), and CMR (only neck circumference). Altogether 24 weeks of concurrent exercise does not appear to reduce NAT accumulation in young adults, but may slightly reduce neck circumference in those who partake in vigorous exercise.","PeriodicalId":14334,"journal":{"name":"International journal of sport nutrition and exercise metabolism","volume":"33 5","pages":"255-264"},"PeriodicalIF":2.5,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10338006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum. Ergogenic Effects of Very Low to Moderate Doses of Caffeine on Vertical Jump Performance. 勘误表。极低至中等剂量咖啡因对垂直跳跃性能的影响。

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-09-01 DOI: 10.1123/ijsnem.2023-0153

引用次数: 0

Stop, Collaborate, and Listen. 停下来，合作，倾听。

IF 2.5 3区医学

International journal of sport nutrition and exercise metabolism Pub Date : 2023-09-01 DOI: 10.1123/ijsnem.2023-0134

James A Betts

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