The Acute Effects of Nonstimulant Over-the-Counter Dietary Herbal Supplements on Resting Metabolic Rate
| Autor: | Steven M. Howell, Danielle L. Hill, Amanda J. Salacinski, Steven M. Mauk |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male 0301 basic medicine medicine.medical_specialty Biology Placebo Body Mass Index Young Adult 03 medical and health sciences Weight loss Internal medicine Weight Loss medicine Humans Pharmacology (medical) Obesity Cross-Over Studies 030109 nutrition & dietetics Nutrition and Dietetics medicine.disease Crossover study Respiratory quotient Endocrinology Dietary Supplements Basal metabolic rate Body Composition Female Over-the-counter Basal Metabolism Plant Preparations medicine.symptom Body mass index Food Science |
| Zdroj: | Journal of Dietary Supplements. 13:368-377 |
| ISSN: | 1939-022X 1939-0211 |
| Popis: | Weight loss supplements are widely advertised and highly sought out products. Many supplements claim to increase body fat utilization, increase resting metabolic rate (RMR), and to improve body composition by decreasing total body fat composition. Therefore, the purpose of this study was to determine the acute effect of nonstimulant herbal supplements on RMR and substrate utilization.Ten female and 16 male participants (mean age 23.7 ± 3.9 years; mean weight 79.2 ± 18.2 kg) completed a random-repeated measures crossover study. Participants completed a total of three RMRs by either ingesting a placebo (P) or one of two supplements [raspberry ketones (R) or metabolic activator blend (MAB)] 2 hours prior to testing.No significant difference was found for RMR for P vs. MAB (p = .130), vs. R (p = .588), and MAB vs. R (p = .636). No significant difference was found for respiratory quotient for P vs. MAB (p = .056), vs. R (p = .149), and MAB vs. R (p = .764). No significant difference was found for substrate utilization: percent carbohydrate utilization, P vs. MAB (p = .052), P vs. R (p = .124), and MAB vs. R (p = .680); and percent fat utilization, P vs. MAB (p = .052), P vs. R (p = .120), and MAB vs. R (p = .749).Therefore, nonstimulant weight loss supplements may not be beneficial for weight loss, or an increase of fat utilization. |
| Databáze: | OpenAIRE |
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