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Randomized Controlled Trial
. 2017 Aug 15;9(8):882.
doi: 10.3390/nu9080882.

Yerba Maté (Ilex paraguariensis) Metabolic, Satiety, and Mood State Effects at Rest and during Prolonged Exercise

Ahmad Alkhatib  1 , Roisin Atcheson  2
Affiliations
Randomized Controlled Trial

Yerba Maté (Ilex paraguariensis) Metabolic, Satiety, and Mood State Effects at Rest and during Prolonged Exercise

Ahmad Alkhatib et al. Nutrients. .

Abstract

Yerba Maté (YM), has become a popular herb ingested for enhancing metabolic health and weight-loss outcomes. No studies have tested the combined metabolic, satiety, and psychomotor effects of YM during exercise. We tested whether YM ingestion affects fatty acid oxidation (FAO), profile of mood state score (POMS), and subjective appetite scale (VAS), during prolonged moderate exercise. Twelve healthy active females were randomized to ingest either 2 g of YM or placebo (PLC) in a repeated-measures design. Participants rested for 120 min before performing a 30-min cycling exercise corresponding to individuals' crossover point intensity (COP). FAO, determined using indirect calorimetry, was significantly higher during the 30-min exercise in YM vs. PLC (0.21 ± 0.07 vs. 0.17 ± 0.06 g/min, p < 0.05). VAS scores for hunger, prospective eating, and desire to eat were all reduced (p < 0.05). Whereas, POMS measures of focus, energy, and concentration were all increased (p < 0.05). There was no significant time-effect for any of the measured variables, nor was there any interaction effects between YM treatment and time. Combining YM intake with prolonged exercise at targeted "fat-loss"' intensities augments FAO and improves measures of satiety and mood state. Such positive combined metabolic, satiety, and psychomotor effects may provide an important role for designing future fat and weight-loss lifestyle interventions.

Keywords: appetite; endurance-exercise; fat-loss; metabolism; psychomotor; thermogenic.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Fatty Acid Oxidation (FAO) during exercise in Yerba Mate (YM) vs. placebo (PLC). ANOVA treatment effect (p < 0.05). * Significantly higher in YM compared with PLC.
Figure 2
Figure 2
Carbohydrate oxidation during exercise in Yerba Mate (YM) vs. placebo (PLC), (p > 0.05).
Figure 3
Figure 3
Total Energy expenditure during exercise in Yerba Mate (YM) vs. placebo (PLC).
Figure 4
Figure 4
Heart rate response during exercise in Yerba Mate (YM) vs. placebo (PLC).
Figure 5
Figure 5
Rate of perceived exertion during exercise in Yerba Mate (YM) vs. placebo (PLC).
See this image and copyright information in PMC

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