Effects of a Weight Loss Supplement on Energy Expenditure
Author Information
Author(s): Hoffman Jay R, Kang Jie, Ratamess Nicholas A, Rashti Stefanie L, Tranchina Christopher P, Faigenbaum Avery D
Primary Institution: The College of New Jersey
Hypothesis
Does acute ingestion of a weight loss supplement affect resting oxygen uptake, caloric expenditure, heart rate, and blood pressure in healthy individuals?
Conclusion
The study found that a weight loss supplement significantly increases energy expenditure and elevates heart rate and blood pressure in young, healthy individuals.
Supporting Evidence
- Subjects showed a 28.9% increase in VO2 after taking the supplement compared to placebo.
- Energy expenditure was significantly higher in the supplement group at 1.28 kcal/min compared to 1.00 kcal/min in the placebo group.
- Heart rate was significantly elevated during the second and third hours after taking the supplement.
- Systolic blood pressure was significantly higher in the supplement group compared to placebo.
Takeaway
Taking a weight loss supplement can help your body burn more energy and make your heart beat faster.
Methodology
Ten subjects participated in a double-blind, crossover study where they ingested either a weight loss supplement or a placebo, and various metabolic measures were taken over three hours.
Potential Biases
Potential bias due to funding from a company that produces the supplement.
Limitations
The study had a small sample size and short duration, and results may not be generalizable to all populations.
Participant Demographics
5 male and 5 female subjects, average age 20.2 years, healthy and physically active.
Statistical Information
P-Value
0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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