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Metabolic Impact of TRX Suspension Training: Research Findings and Physiological Responses

Explore the caloric expenditure and physiological responses during and after a TRX suspension workout. Discover the metabolic effects, substrate usage, and stress placed on the body. This study delves into the variables of interest, including heart rate, blood pressure, and caloric expenditure. Findings show TRX as an effective calorie-burning method with additional expenditure even post-workout. Learn about the role of carbohydrates and lipids as fuel sources in TRX training.

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Metabolic Impact of TRX Suspension Training: Research Findings and Physiological Responses

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  1. Caloric Expenditure and Physiological Responses During and Following a Suspension Training Workout Sigma Xi Brown-bag Lunch October 16, 2009 Dr. Wes Dudgeon

  2. Background • What is TRX ® /suspension training? • Body Weight resistance • Unstable surfaces • Requires “Core” muscle use for all exercises • Emphasizes flexibility • Interval-Type training

  3. Where do we (I) come in? • Many claims made by manufacturer, but……… No Data to Back it up!! • Research questions we asked (this time): • What is the “stress” placed on the body by a TRX® workout? (HR, BP, RPE) • What is the “metabolic effect” of a typical TRX® workout? (caloric expenditure, substrate usage)

  4. Study Design • Descriptive study • 9 college age males (21.4  0.9 years, 176.7  3.3 cm, 68.8  3.6 kg, 13.4  1.7% body fat) • 2 Familiarization sessions • Testing day included: • BodPod for body fat %, Fitting of a HR monitor, attachment to Metabolic Cart® (ParvoMedics), insertion of indwelling venous catheter • 30 min resting energy expenditure • 60 min training session • 120 min cool down

  5. Variables of Interest • food + O2 CO2 + H2O + energy (ATP) • RER = VCO2 / VO2 • reflects ratio of CHO and fat metabolism • 100% CHO metabolism, RER = 1.0 • e.g. C6H1206+6 O2 6 CO2 / 6 O2 = 1.0 • 100% fat metabolism, RER = 0.7 • e.g. C16H32+23 O2 16 CO2 / 23 O2 = 0.7 • 1:1 CHO to fat ratio, RER = 0.83 • assumes (incorrectly) no protein is used • HR • BP • Respiratory Exchange Ratio (RER) • Caloric Expenditure (kcals/min) • Blood Lactate

  6. Example Testing Session

  7. # # = great than both RMR and EPOC

  8. # = great than both RMR and EPOC

  9. Conclusions • Effective method of burning calories, while also providing additional caloric expenditure above baseline during a two-hour recovery • Using 30 sec work intervals followed by 60 sec rest periods elicited lactate and heart rate responses indicative of moderate intensity exercise • Carbohydrates were the primary fuel source during the TRX workout, while lipids were the predominant source during recovery

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