Metabolic and cardiovascular demands of a high-intensity interval exercise bout utilizing a suspension device
DOI:
https://doi.org/10.12922/jshp.v2i3.44Keywords:
Suspension Training, HIIT, High-intensity exercise, TRXAbstract
Two methods of training, high-intensity interval training (HIIT) and suspension device training, have recently gained popularity in the fitness and health industry. Purported effects of these rapid, efficient workouts (HIIT) and functional training devices include weight loss, cardiovascular improvements, and other health benefits. However, limited or no data currently exists combining these two methods of training. Therefore, the purpose of this study to determine the cardiovascular and metabolic demands of a high-intensity interval training program performed on a suspension device. Twelve, apparently healthy, men (n=9) and women (n=3), mean age = 24.67 ± 2.90, volunteered to participate in this study. Participants performed a pre-programmed HIIT suspension device program (i.e., TRX® Metabolic Blast) consisting of nine bodyweight exercises, followed by a 1 minute cardio sprint. Results demonstrated that the exercise bout elicited an average heart rate of 148.0 ± 12.0 beats.min-1, or 82.99 ± 4.20% HRmax. The bout produced a VO2avg of 24.34 ± 3.24 ml.kg-1.min-1, which was 55.97 ± 5.82% VO2max. Total caloric expenditure for the HIIT program resulted in 96.98 ± 19.49 kcals.min-1, or approximately 10.78 ± 2.17 kcals.min-1. While average MET levels for the workout were equal to 6.94 ± 0.93. Results of suggest that the exercise bout could be classified as “moderate-to-high intensity” exercise according to the established American College of Sports Medicine guidelines. While, the workout elicited a vigorous intensity heart rate, only a moderate percentage of VO2max was obtained. Therefore, cardiovascular adaptations may not be seen in semi- to highly-trained individuals.
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