a Suspension Training Workout Sigma Xi Brownbag Lunch October 16 2009 Dr Wes Dudgeon Background What is TRX suspension training Body Weight resistance Unstable surfaces Requires Core muscle use for all exercises ID: 684544
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Slide1
Caloric Expenditure and Physiological Responses During and Following a Suspension Training Workout
Sigma Xi
Brown-bag Lunch
October 16, 2009
Dr. Wes DudgeonSlide2
Background What is TRX
®
/suspension training?
Body Weight resistance
Unstable surfaces
Requires “Core” muscle use for all exercises
Emphasizes flexibility
Interval-Type trainingSlide3
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)Slide4
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 downSlide5
Variables of Interest HRBP
Respiratory Exchange Ratio (RER)
Caloric Expenditure (
kcals
/min)
Blood Lactate
food + O
2
CO2 + H2O + energy (ATP) RER = VCO2 / VO2 reflects ratio of CHO and fat metabolism100% CHO metabolism, RER = 1.0e.g. C6H1206+6 O2 6 CO2 / 6 O2 = 1.0100% fat metabolism, RER = 0.7e.g. C16H32+23 O2 16 CO2 / 23 O2 = 0.71:1 CHO to fat ratio, RER = 0.83assumes (incorrectly) no protein is usedSlide6
Example Testing SessionSlide7Slide8Slide9Slide10Slide11Slide12
#
# = great than both RMR and EPOCSlide13Slide14
# = great than both RMR and EPOCSlide15
ConclusionsEffective 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