# Blood Flow Restriction during Walking Does Not Impact Body Composition or Performance Measures in Highly Trained Runners

## TL;DR

A 4-week walking program with blood flow restriction had no effect on body composition or performance in highly trained runners.

## Contribution

Shows that low-intensity walking with BFR does not improve body composition or performance in active adults.

## Key findings

- No changes in body composition or performance were observed among the groups.
- VO2 at V-slope threshold improved for all groups combined after training.
- BFR during low-volume walking did not provide enough stimulus for adaptation.

## Abstract

Blood flow restriction (BFR) is a commonly used training modality that has been demonstrated to enhance muscle characteristics such as size and function. The purpose of this study was to determine if a 4-week walking program with or without BFR in healthy, active adults has an effect on body composition, anaerobic, and aerobic running performance. Thirty-three participants, randomized among three groups, completed the walking program, which included five sets of 2 min walking intervals with 1 min rest, with or without BFR, or 10 min walking with BFR. Assessments completed before and after the walking program included body composition, 40-yard sprints, and a VO2MAX test on a treadmill. A two-way ANOVA revealed no changes among the groups nor for any variables at any time (p > 0.05). Additionally, one main effect for time indicated the VO2 at V-slope threshold was greater following training for all groups combined (p = 0.001). The results demonstrate that low volume and intensity walking with BFR for 4 weeks did not provide a sufficient stimulus for changing body composition or performance metrics in a group of very active adults. Longer or more isolated exposure of BFR on the limbs may contribute to more pronounced adaptations.