Date of Award
2025
Document Type
Dissertation
Department
Physical Education
First Advisor
Hunter S. Waldman
Second Advisor
T. Scott Lyons
Third Advisor
Eric O'Neal
Abstract
INTRODUCTION: Lipid oxidation (LOx) is a relevant physiological process linked to metabolic health. Despite growing interest in resistance training (RT) as a means to influence substrate utilization LOx responses in females remain poorly characterized, with no study examining whether lower- and upper body RT elicits different LOx patterns during the recovery period following exercise. This distinction may be relevant because lower-body exercises involves greater fat-free mass (FFM) and energy expenditure, whereas upper-body exercises recruit less FFM, potentially influencing metabolic effects.
PURPOSE: To determine if LOx rates after exercise differ between lower- and upper-body RT in well-trained females.
METHODS: Twenty-two females (age: 25.4±5.6 years, FFM: 44.5±4.9kg, mean relative strength: 1.1±0.2) completed repetition-maximum (RM) tests in the barbell back squat (BS) and bench press (BP). From these, an equated volume-load (sets×repetitions×load) was determined using 65%1RM of participants’ BS and BP. Metabolic testing was completed before either the BS or BP, then immediately (IP), 30-, 60-, and 90- min post-exercise.
RESULTS: No significant differences were found between BS or BP LOx rates (p>0.05). LOx relative to FFM averaged 1.57±0.4 mg·kg⁻¹FFM·min⁻¹ across both exercises from IP to 90- min post-exercise, representing a 45% and 65% increase from baseline in the BP and BS, respectively. At 90-min post-RT, LOx reached 1.78±0.37mg·kg⁻¹FFM·min⁻¹ (SEM=0.08) for the BS and 1.65±0.31mg·kg⁻¹FFM·min⁻¹ (SEM=0.07) for BP, with no between-condition differences (p>0.05). Resting energy expenditure (REE) was not different between conditions (p>0.05), with a pooled average of 1.04±0.13kcal∙min⁻¹ from IP to 90-min post-RT.
CONCLUSION: These data demonstrate that RT, differing in FFM but not volume-load, stimulates comparable LOx rates and REE responses during the post-exercise recovery period. These findings support versatility in exercise prescription, indicating that RT of different muscle regions can produce similar acute metabolic outcomes.
Recommended Citation
Parten, Alyssa L., "Comparison of Post-Exercise Lipid Oxidation Rates Between Lower and 1 Upper-Body Resistance Training in Well-Trained Females" (2025). Dissertations. 23.
https://roar.una.edu/dissertations/23
