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Metabolic Heat Generation During Exercise

Metabolic Heat Generation During Exercise

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Metabolic Heat Generation During Exercise

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  1. Metabolic Heat Generation During Exercise ME 340 Final Project Ryan Huff & Scott Wood

  2. Experimental Setup • Goal: To determine the efficacy of dry release exercise shirts • Procedure: • Used 24 AFROTC Cadet Volunteers • Measured body temperature from the armpit using a thermocouple before and after exercise • Performed a 23 factorial experiment • Three Factors: • Exercise Length (5/10 min) • Exercise Type (Run/Walk) • Shirt Type (DryRel/Cotton)

  3. Shirt Heat Source Control Surface Analytical Model Tb • Energy Balance: • Assumptions • Model body as long cylinder • Conduction through the muscles to the skin • Convection and radiation from the skin to the environment • (ε = 1) Ts Air, T∞

  4. Experimental Results Shirt Type DryRelease Cotton Shirt Type Ex Type Interaction P-values Shirt Type*Ex Type 0.10 Shirt Type*Ex Length 0.01 Ex Type*Ex Length 0.08 Shirt Type*Ex Type*Ex Length 0.04 Ex Length

  5. Conclusions • Dry Release Shirt had an effect on body temperature during exercise • Using a Dry Release shirt will better maintain core body temperature during activity • Model only works for data collected and range specified • Further study and modeling need to be performed

  6. Recommendations • Length of exercise • 20 and 50 minutes • Should use heart rate monitors to ensure more uniform exercise intensity • Measurement Accuracy • Use thermocouples with faster response • Measure body temperature from a different location…uh oh, where?

  7. Dry Release (h)

  8. Cotton (h)