Outdoor E-trike cycling: A low intensity physical activity

Area of Science:

• Rehabilitation Engineering
• Exercise Physiology
• Human-Computer Interaction

Background:

• Electrically supported tricycles (e-trikes) show potential for enhancing independence and physical activity participation in individuals with disabilities or chronic diseases.
• Understanding the physiological demands of e-trike cycling is crucial for its effective application in rehabilitation and health promotion.

Purpose of the Study:

• To investigate the exercise intensity and perceived exertion during e-trike cycling across various speeds and electric support levels.
• To determine the impact of speed and electric assistance on physiological responses during e-trike use.

Main Methods:

• Twenty healthy participants engaged in e-trike cycling trials at two speeds (12 and 18 km/h) with varying levels of electric pedal support.
• Exercise intensity was quantified using oxygen consumption ($$) measured via Cosmed K4B2.
• Perceived exertion was assessed using the Borg Rating of Perceived Exertion scale, complemented by measurements of pedaling and engine power.

Main Results:

• E-trike cycling without electric support resulted in an average oxygen consumption of 18.67 ± 3.13 ml/kg/min.
• With electric support, exercise intensity was significantly below moderate intensity levels (10.5 ml/kg/min).
• Borg scores were significantly lower in all e-trike conditions compared to unassisted cycling, indicating reduced perceived exertion.

Conclusions:

• E-trike cycling represents a low-intensity physical activity suitable for a broad range of users.
• Exercise intensity and perceived exertion during e-trike use can be effectively manipulated by adjusting cycling speed and the level of electric assistance.
• E-trikes can be a valuable tool for promoting physical activity and improving health outcomes for individuals with mobility limitations.