No differences existed between the two groups for any strength or body composition measures at baseline. The repeated measures ANOVA revealed a significant group × time interaction for body fat % (p = 0.044) favoring the thermogenic supplement treatment. Specifically, body fat percentage decreased from 11.9% to 11.0% and 11.8% to 11.7% in the thermogenic and placebo treatments, respectively. There were also changes in total fat mass that resulted in a significant group × time interaction (p = 0.032). Fat mass decreased from 9.6 to 8.9 kg in the thermogenic supplement group and remained stable in the placebo group (slightly increasing from 9.6 to 9.8kg). Lean body mass increased in both groups, increasing from 68.8 to 69.9kg in the thermogenic supplement group and from 69.7 to 70.8kg in the placebo group. These changes resulted in a significant main effect for time (p < 0.001), but no group × time interaction was observed (p = 0.947). Relative to maximal strength, the repeated measures ANOVA revealed a significant main effect for time relative to bench press 1RM (p < 0.001), but no group × time interaction was observed (p = 0.303). Similarly, a main effect for time was observed for squat 1RM (p < 0.001), but no group × time interaction was observed (p = 0.299).