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July 23, 2019International Journal of Sports MedicineOpen Access

Exercise with Blood Flow Restriction to Improve Quadriceps Function Long After ACL Reconstruction

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Key result

A 4-week home-based blood flow restriction exercise program increased knee extensor strength by 20±14% (P<0.01) and restored strength symmetry to levels of uninjured controls.

Why the study?

Quadriceps atrophy and weakness can persist for years after anterior cruciate ligament reconstruction (ACLR).

Does a home-based blood flow restriction exercise program improve quadriceps size and strength in adults long after anterior cruciate ligament reconstruction?

Population

Nine adults with ACLR and nine uninjured controls

Comparison

Home-based blood flow restriction exercise vs baseline and uninjured controls

Follow-up

4 wks

Authors

MKMatthew A. KilgasLLLydia LytleSDScott N. Drum

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Overview

Home-based BFR may aid late quadriceps recovery after ACLR; case-control data leave open efficacy in randomized trials.

Structured PICO

Does a home-based blood flow restriction exercise program improve quadriceps size and strength in adults long after anterior cruciate ligament reconstruction?

P
Population
18 adults, comprising 9 patients 5±2 years post-anterior cruciate ligament reconstruction with quadriceps asymmetry and 9 uninjured controls, followed for 4 weeks.
I
Intervention
Home-based blood flow restriction (BFR) exercise program (single-leg knee extension, bodyweight half-squats, walking) for 25 min, 5×/wk for 4 weeks, using a thigh cuff inflated to 50% of limb occlusion pressure on the involved leg.
C
Comparator
Baseline measurements (pre-training) and uninjured controls.
O
Outcome
Rectus femoris and vastus lateralis thickness and knee extensor strength.surrogate

Main Result

p-value: p=<0.01

A home-based blood flow restriction exercise program is safe, feasible, and effective at improving quadriceps size and strength several years after ACL reconstruction.

Cite This Study

Kilgas et al. (2019) studied Anterior cruciate ligament reconstruction (ACLR) (n=18). Home-based blood flow restriction (BFR) exercise program vs. Uninjured controls / Baseline was evaluated on Rectus femoris and vastus lateralis thickness and knee extensor strength (p=<0.01). A 4-week home-based blood flow restriction exercise program increased knee extensor strength by 20±14% (P<0.01) and restored strength symmetry to levels of uninjured controls.

synapsesocial.com/papers/6a9502697fee368366827f20https://doi.org/10.1055/a-0961-1434
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