Presentation Type
Poster
Discipline Track
Other
Exercise Science
Abstract Type
Research/Clinical
Abstract
Background: Blood Flow Resistance (BFR) training has garnered attention for its ability to induce positive physiological adaptations with low-load resistance exercise. The present study aimed to examine the responses of catabolic hormones and heart rates (HR) to various BFR training protocols. This investigation seeks to provide insights into the stress levels induced by different protocols and identification behind the most effective protocol for optimal positive exercise-related adaptations.
Methods: Study population involved 10 healthy adult males (height: 175.0±5.0 cm, weight: 96.67±26.6 kg, age: 21.3±2.67 yr.) in a five-session investigation. Informed consent paperwork, pre-testing and anthropometric measurements served as session 1; sessions 2-5 focused on 4 different protocol-specific trainings, using a randomized within-subjects design to assess Cortisol and HR responses. The training protocols included: 20% 1-RM with BFR+rest pause (RP), 20% 1-RM with BFR+drop set (DS), 70-80% 1-RM (HI) without BFR, and 20% 1-RM without BFR with matched RP volumes (CON). Prior to RP and DS sessions, BFR pneumatic cuffs were placed around the upper third of the quadriceps bilaterally and inflated to a pressure that allows for skin to regain its color within 1-2 sec. after pressure has been applied with the thumb. Training sessions encompassed two-circuits (each with leg press and leg extension exercises) that were separated by 5 minutes of passive rest. Each exercise was performed until the participant could no longer perform the action with proper form (volitional fatigue) or until the set number of reps and sets of leg press and leg extension exercises were completed. Salivary samples that were collected pre- and post-training using passive drool saliva collection method were labeled and stored immediately by qualified study personnel at 4-8°C refrigeration.
Results: Statistical analyses revealed significant time main effects for RP (p
Conclusion: Identifying the optimal exercise protocol for maximizing sporadic exercise session benefits is crucial, given time constraints as a significant factor contributing to physical inactivity. Notable increases in Cortisol from the RP protocol may indicate the level of muscle damage, as GH and Cortisol concentrations are linked to heightened exercise intensities. The findings suggest that the RP protocol with BFR could generate similar or greater intensities (supported by significantly higher HR) and favorable adaptations compared to HI protocols, all while using lighter loads. However, caution is advised against engaging in this protocol more than once a week, as excessive Cortisol elevation is associated with overtraining, potentially leading to increased skeletal muscle breakdown and impaired recovery. This study, alongside similar research, underscores the diverse potential of BFR training within various fitness domains.
Academic/Professional Position
Undergraduate
Academic/Professional Position (Other)
Health and Human Performance
Recommended Citation
Gomez, Tomas Jr.; Schlatter, Rebekah; Zamora, Megan; Arriago, Marco; Chew, Sue Anne; and Karabulut, Murat, "Stress Hormone and Heart Rate Responses to Various Exercise Training Methods" (2024). Research Symposium. 62.
https://scholarworks.utrgv.edu/somrs/2024/posters/62
Included in
Exercise Physiology Commons, Exercise Science Commons, Medicine and Health Sciences Commons
Stress Hormone and Heart Rate Responses to Various Exercise Training Methods
Background: Blood Flow Resistance (BFR) training has garnered attention for its ability to induce positive physiological adaptations with low-load resistance exercise. The present study aimed to examine the responses of catabolic hormones and heart rates (HR) to various BFR training protocols. This investigation seeks to provide insights into the stress levels induced by different protocols and identification behind the most effective protocol for optimal positive exercise-related adaptations.
Methods: Study population involved 10 healthy adult males (height: 175.0±5.0 cm, weight: 96.67±26.6 kg, age: 21.3±2.67 yr.) in a five-session investigation. Informed consent paperwork, pre-testing and anthropometric measurements served as session 1; sessions 2-5 focused on 4 different protocol-specific trainings, using a randomized within-subjects design to assess Cortisol and HR responses. The training protocols included: 20% 1-RM with BFR+rest pause (RP), 20% 1-RM with BFR+drop set (DS), 70-80% 1-RM (HI) without BFR, and 20% 1-RM without BFR with matched RP volumes (CON). Prior to RP and DS sessions, BFR pneumatic cuffs were placed around the upper third of the quadriceps bilaterally and inflated to a pressure that allows for skin to regain its color within 1-2 sec. after pressure has been applied with the thumb. Training sessions encompassed two-circuits (each with leg press and leg extension exercises) that were separated by 5 minutes of passive rest. Each exercise was performed until the participant could no longer perform the action with proper form (volitional fatigue) or until the set number of reps and sets of leg press and leg extension exercises were completed. Salivary samples that were collected pre- and post-training using passive drool saliva collection method were labeled and stored immediately by qualified study personnel at 4-8°C refrigeration.
Results: Statistical analyses revealed significant time main effects for RP (p
Conclusion: Identifying the optimal exercise protocol for maximizing sporadic exercise session benefits is crucial, given time constraints as a significant factor contributing to physical inactivity. Notable increases in Cortisol from the RP protocol may indicate the level of muscle damage, as GH and Cortisol concentrations are linked to heightened exercise intensities. The findings suggest that the RP protocol with BFR could generate similar or greater intensities (supported by significantly higher HR) and favorable adaptations compared to HI protocols, all while using lighter loads. However, caution is advised against engaging in this protocol more than once a week, as excessive Cortisol elevation is associated with overtraining, potentially leading to increased skeletal muscle breakdown and impaired recovery. This study, alongside similar research, underscores the diverse potential of BFR training within various fitness domains.