Comparing physiological responses between the revolutionary rocket and a standard bicycle

Abstract

This study was designed to examine potential differences in the physiological responses between exercising on the Revolutionary Rocket (Rocket) and a standard bicycle. Sixteen subjects (8 males, 8 females) performed one practice session on each bike. Subjects then completed two, 20-minute steady-state rides, one on the Rocket and one on a standard bicycle in random order. The tests were conducted in four, 5-minute stages. The stages were at 8 mph, 10 mph, 12 mph, and 14 mph. During the testing VO2 and caloric expenditure were measured continually. Heart rate was monitored each minute using a heart rate monitor. Rating of perceived effort was assessed using the Borg 6-20 scale at end of each stage. Speed was determined using identical bicycle computers that were affixed to each bicycle. Results indicated that the VO2 and Kcal responses were significantly different between bikes, but only at 12 and 14 mph. The RPE responses were not significantly different between bikes at any of the four speeds. Based upon these results it appears that exercising on the Rocket elicits lower responses than exercising on a standard bicycle in both males and females.