Effects of Nontraditional Exercise Interventions on the Cardiovascular System
Disciplines
Exercise Science | Other Analytical, Diagnostic and Therapeutic Techniques and Equipment | Other Kinesiology | Other Rehabilitation and Therapy
Abstract (300 words maximum)
Patients on bedrest or with casts face issues with loss of muscle mass, however, a 5-min blood flow restriction (BFR) protocol may mitigate these changes. BFR can be painful and uncomfortable, thus our purpose is to see if a 3-minute BFR protocol is a preferable alternative. Methods: This is an ongoing study. Using a within-subject design, participants complete 4 visits with familiarization on visit 1. On visits 2-4, participants have one of three conditions with either cuff inflation on the dominant arm for 0-min (CON), 3-min (BFR3), or 5-min (BFR5) cycles. Following a 5-min rest with the dominant arm abducted 90 degrees measures of pain, discomfort, and tissue saturation index were recorded. The BFR pressure is determined as 80% of the minimum pressure necessary to stop blood flow. In the 30 seconds of cuff inflation, participants rate pain and discomfort with separate 10-point scales. The slope of tissue saturation index (measured via near infrared spectroscopy) following 15 sec after cuff deflation was recorded as a measure of microvascular function. For statistical analysis, we plan to calculate three change scores (first cycle-baseline; fifth cycle-baseline; last cycle-baseline) and compare these using a two-way Bayesian Repeated Measures ANOVA. Results: Currently, one male (age: 19yrs, weight: 77.8kg, height: 176.5cm) has completed this study. His change in discomfort (A.U.) was lower for BFR3 (Last cycle: 1) and CON (Last cycle: 0) when compared to BFR5 (Last cycle: 2). His change in pain (A.U.) was the same for BFR3 and BFR5 (Last cycle: 1) while CON had no pain. Microvascular function (%/s) appears highest in response to BFR3 (Last cycle: 0.83) when compared to BFR5 (Last cycle: -0.20) and CON (Last cycle: 0.00). Conclusions: Based on preliminary findings, shorter inflations for additional cycles may be preferable in effectiveness and with less discomfort.
Academic department under which the project should be listed
WCHHS - Exercise Science and Sport Management
Primary Investigator (PI) Name
Daphney Carter
Additional Faculty
none
Effects of Nontraditional Exercise Interventions on the Cardiovascular System
Patients on bedrest or with casts face issues with loss of muscle mass, however, a 5-min blood flow restriction (BFR) protocol may mitigate these changes. BFR can be painful and uncomfortable, thus our purpose is to see if a 3-minute BFR protocol is a preferable alternative. Methods: This is an ongoing study. Using a within-subject design, participants complete 4 visits with familiarization on visit 1. On visits 2-4, participants have one of three conditions with either cuff inflation on the dominant arm for 0-min (CON), 3-min (BFR3), or 5-min (BFR5) cycles. Following a 5-min rest with the dominant arm abducted 90 degrees measures of pain, discomfort, and tissue saturation index were recorded. The BFR pressure is determined as 80% of the minimum pressure necessary to stop blood flow. In the 30 seconds of cuff inflation, participants rate pain and discomfort with separate 10-point scales. The slope of tissue saturation index (measured via near infrared spectroscopy) following 15 sec after cuff deflation was recorded as a measure of microvascular function. For statistical analysis, we plan to calculate three change scores (first cycle-baseline; fifth cycle-baseline; last cycle-baseline) and compare these using a two-way Bayesian Repeated Measures ANOVA. Results: Currently, one male (age: 19yrs, weight: 77.8kg, height: 176.5cm) has completed this study. His change in discomfort (A.U.) was lower for BFR3 (Last cycle: 1) and CON (Last cycle: 0) when compared to BFR5 (Last cycle: 2). His change in pain (A.U.) was the same for BFR3 and BFR5 (Last cycle: 1) while CON had no pain. Microvascular function (%/s) appears highest in response to BFR3 (Last cycle: 0.83) when compared to BFR5 (Last cycle: -0.20) and CON (Last cycle: 0.00). Conclusions: Based on preliminary findings, shorter inflations for additional cycles may be preferable in effectiveness and with less discomfort.