Energy requirements of tire pulling

Area of Science:

• Exercise Physiology
• Sports Science
• Biomechanics

Background:

• Investigated the physiological effects of using walking poles and pulling tires.
• Examined oxygen uptake (V̇O2) and heart rate responses at different speeds (4 and 6 km·h⁻¹).

Purpose of the Study:

• To quantify the energy expenditure associated with tire pulling and pole-assisted walking.
• To compare the metabolic and cardiovascular demands of these activities to running.

Main Methods:

• Field tests conducted on eleven healthy male subjects (mean age 25.2 years).
• Participants performed walking without poles, walking with poles, and tire pulling with poles.
• Measured oxygen uptake (V̇O2) and heart rate during various exercise conditions.

Main Results:

• Increasing load (pulling two tires vs. one) significantly elevated energy demand.
• Higher speeds (6 km·h⁻¹ vs. 4 km·h⁻¹) substantially increased energy expenditure.
• Inclination had a modest effect on oxygen uptake, while poles provided a marginal increase.
• Tire pulling at 6 km·h⁻¹ and 5% inclination elicited V̇O2 levels equivalent to running uphill at 12.5 km·h⁻¹.
• Heart rate responses correlated with oxygen uptake, reaching 174 bpm in the most strenuous condition.

Conclusions:

• Tire pulling, even at slow speeds, presents a high energy requirement.
• The significant physiological demand suggests tire pulling is a feasible and effective modality for endurance training.