Publications by authors named "Daphney M Stanford"
Background: Post-occlusive reactive hyperemia (PORH) typically requires caffeine abstinence. For habitual users, it is unknown if abstinence affects PORH.
Objective: Compare PORH after habitual users consume or abstain from caffeine.
Blood flow restriction is growing in popularity as a tool for increasing muscular size and strength. Currently, guidelines exist for using blood flow restriction alone and in combination with endurance and resistance exercise. However, only about 1.
View Article and Find Full Text PDFIntroduction: Recommendations are that blood flow restriction (BFR) be applied relative to arterial occlusion pressure (AOP) to provide a similar stimulus.
Purpose: Compare variability of the change in blood flow, shear rate and discomfort between recommended relative pressures and an absolute pressure.
Methods: During one visit, brachial arterial blood flow was measured in 91 participants using pulse-wave Doppler ultrasonography.
Article Synopsis
- The study aimed to compare how different types of blood flow restriction (BFR) exercises—unilateral, bilateral, and alternating—affect muscle responses in participants.
- 19 participants underwent a series of knee extension exercises with BFR while their muscle thickness, muscle activation, and tissue oxygenation were measured at various points.
- Results showed that while muscle responses were similar across exercise types, there were notable differences based on sex, especially in muscle excitation and tissue deoxygenation during the exercises.
Article Synopsis
- The study aimed to compare cardiovascular responses during three different contraction patterns of blood flow restriction (BFR) exercise: unilateral (UNI), bilateral (BIL), and alternating (ALT) while using low loads.
- Twenty healthy participants performed knee extension exercises under controlled conditions, measuring changes in blood pressure and heart rate using pulse wave analysis.
- Results showed that ALT contraction pattern led to greater increases in various blood pressure metrics and heart rate compared to UNI and BIL patterns, suggesting that different contraction patterns significantly affect cardiovascular responses during BFR exercise.
The acute muscular response to passive movement and blood flow restriction.
Clin Physiol Funct Imaging
September 2020
Purpose: To compare the acute effects of passive movement combined with blood flow restriction (PM + BFR) to passive movement (PM) or blood flow restriction alone (BFR).
Methods: A total of 20 healthy participants completed: time control (TC), PM, BFR and PM + BFR (one per leg, over 2 days; randomized). For PM, a dynamometer moved the leg through 3 sets of 15 knee extensions/flexions (90° at 45°/second).