Introduction
Time constraints are frequently reported as the main hindrance for frequent exercise; thus, time-saving exercise protocols are attractive to people seeking to increase their performance, attractiveness, and health. With respect to resistance exercise, low volume, high-intensity training (HIT) protocols seem to be the most time-efficient method to improve muscle mass and strength, independent of the ongoing debate whether resistance exercise with higher volume may be more effective in general [1–5]. However, alternative training technologies tailored to commercial applications may dispute.