Steven Vitti, Michael Bruneau, Leah Bisgrove, Samuel Grey, Sarah Levine, Craig Mattern, Justin Faller
{"title":"单剂量富含β素的浓缩物对跑步表现和恢复肌肉血流量决定因素的影响：一项随机、三盲、安慰剂对照的交叉试验。","authors":"Steven Vitti, Michael Bruneau, Leah Bisgrove, Samuel Grey, Sarah Levine, Craig Mattern, Justin Faller","doi":"10.1007/s00421-025-05738-w","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to examine the effects of a single dose of a betalain-rich concentrate (BRC) on determinants of running performance and recovery lactate clearance.</p><p><strong>Methods: </strong>In this a randomized, triple-blind, placebo-controlled, crossover trial, 17 male recreational runners (Age: 19.0 ± 1.0 years; Height: 176.8 ± 6.2 cm; Weight: 70.62 ± 8.1 kg; Body fat: 12.8 ± 0.03%; VO<sub>2max</sub>: 58.9 ± 8.6 ml/kg/min) consumed an acute dose of a BRC (100 mg) or a placebo (100 mg of dextrose; CON) and performed a running economy protocol (RE) at velocities corresponding to 60% and 80% of maximal oxygen consumption (VO<sub>2max</sub>) followed by a VO<sub>2max</sub> test. Both exercise and recovery skeletal muscle oxygenation (SmO<sub>2</sub>) were assessed via near-infrared spectroscopy (NIRS), and recovery lactate was obtained.</p><p><strong>Results: </strong>BRC resulted in lower heart rate (HR) at velocities corresponding to 80% of VO<sub>2max</sub> (p = 0.05) and maximum HR (HR<sub>max</sub>; p = 0.01), and a lower rating of perceived exertion (RPE) at velocities corresponding to 60% of VO<sub>2max</sub> (p = 0.02) when compared to CON. BRC also improved post-exercise SmO<sub>2</sub> at 3 (p = 0.05), 4 (p = 0.02), and 5 min (p = 0.01) but not lactate clearance (p > 0.05). BRC did not significantly improve RE or VO<sub>2max</sub> (p > 0.05).</p><p><strong>Conclusions: </strong>A single dose of BRC did not enhance RE or VO<sub>2max</sub>. However, the observed improvements in exercise HR, RPE, and SmO₂ suggest that BRC may confer cardiovascular benefits for exercise and recovery.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"1809-1816"},"PeriodicalIF":2.8000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12227450/pdf/","citationCount":"0","resultStr":"{\"title\":\"Effects of a single dose of a betalain-rich concentrate on determinants of running performance and recovery muscle blood flow: a randomized, triple-blind, placebo-controlled, crossover trial.\",\"authors\":\"Steven Vitti, Michael Bruneau, Leah Bisgrove, Samuel Grey, Sarah Levine, Craig Mattern, Justin Faller\",\"doi\":\"10.1007/s00421-025-05738-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose: </strong>This study aimed to examine the effects of a single dose of a betalain-rich concentrate (BRC) on determinants of running performance and recovery lactate clearance.</p><p><strong>Methods: </strong>In this a randomized, triple-blind, placebo-controlled, crossover trial, 17 male recreational runners (Age: 19.0 ± 1.0 years; Height: 176.8 ± 6.2 cm; Weight: 70.62 ± 8.1 kg; Body fat: 12.8 ± 0.03%; VO<sub>2max</sub>: 58.9 ± 8.6 ml/kg/min) consumed an acute dose of a BRC (100 mg) or a placebo (100 mg of dextrose; CON) and performed a running economy protocol (RE) at velocities corresponding to 60% and 80% of maximal oxygen consumption (VO<sub>2max</sub>) followed by a VO<sub>2max</sub> test. Both exercise and recovery skeletal muscle oxygenation (SmO<sub>2</sub>) were assessed via near-infrared spectroscopy (NIRS), and recovery lactate was obtained.</p><p><strong>Results: </strong>BRC resulted in lower heart rate (HR) at velocities corresponding to 80% of VO<sub>2max</sub> (p = 0.05) and maximum HR (HR<sub>max</sub>; p = 0.01), and a lower rating of perceived exertion (RPE) at velocities corresponding to 60% of VO<sub>2max</sub> (p = 0.02) when compared to CON. BRC also improved post-exercise SmO<sub>2</sub> at 3 (p = 0.05), 4 (p = 0.02), and 5 min (p = 0.01) but not lactate clearance (p > 0.05). BRC did not significantly improve RE or VO<sub>2max</sub> (p > 0.05).</p><p><strong>Conclusions: </strong>A single dose of BRC did not enhance RE or VO<sub>2max</sub>. However, the observed improvements in exercise HR, RPE, and SmO₂ suggest that BRC may confer cardiovascular benefits for exercise and recovery.</p>\",\"PeriodicalId\":12005,\"journal\":{\"name\":\"European Journal of Applied Physiology\",\"volume\":\" \",\"pages\":\"1809-1816\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12227450/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Journal of Applied Physiology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1007/s00421-025-05738-w\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/2/24 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Applied Physiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00421-025-05738-w","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/24 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
Effects of a single dose of a betalain-rich concentrate on determinants of running performance and recovery muscle blood flow: a randomized, triple-blind, placebo-controlled, crossover trial.
Purpose: This study aimed to examine the effects of a single dose of a betalain-rich concentrate (BRC) on determinants of running performance and recovery lactate clearance.
Methods: In this a randomized, triple-blind, placebo-controlled, crossover trial, 17 male recreational runners (Age: 19.0 ± 1.0 years; Height: 176.8 ± 6.2 cm; Weight: 70.62 ± 8.1 kg; Body fat: 12.8 ± 0.03%; VO2max: 58.9 ± 8.6 ml/kg/min) consumed an acute dose of a BRC (100 mg) or a placebo (100 mg of dextrose; CON) and performed a running economy protocol (RE) at velocities corresponding to 60% and 80% of maximal oxygen consumption (VO2max) followed by a VO2max test. Both exercise and recovery skeletal muscle oxygenation (SmO2) were assessed via near-infrared spectroscopy (NIRS), and recovery lactate was obtained.
Results: BRC resulted in lower heart rate (HR) at velocities corresponding to 80% of VO2max (p = 0.05) and maximum HR (HRmax; p = 0.01), and a lower rating of perceived exertion (RPE) at velocities corresponding to 60% of VO2max (p = 0.02) when compared to CON. BRC also improved post-exercise SmO2 at 3 (p = 0.05), 4 (p = 0.02), and 5 min (p = 0.01) but not lactate clearance (p > 0.05). BRC did not significantly improve RE or VO2max (p > 0.05).
Conclusions: A single dose of BRC did not enhance RE or VO2max. However, the observed improvements in exercise HR, RPE, and SmO₂ suggest that BRC may confer cardiovascular benefits for exercise and recovery.
期刊介绍：
The European Journal of Applied Physiology (EJAP) aims to promote mechanistic advances in human integrative and translational physiology. Physiology is viewed broadly, having overlapping context with related disciplines such as biomechanics, biochemistry, endocrinology, ergonomics, immunology, motor control, and nutrition. EJAP welcomes studies dealing with physical exercise, training and performance. Studies addressing physiological mechanisms are preferred over descriptive studies. Papers dealing with animal models or pathophysiological conditions are not excluded from consideration, but must be clearly relevant to human physiology.
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