Format

Send to

Choose Destination
See comment in PubMed Commons below
Med Sci Sports Exerc. 2012 Jun;44(6):1116-22. doi: 10.1249/MSS.0b013e318240d564.

Effect of ankle braces on lower extremity joint energetics in single-leg landings.

Author information

1
Department of Kinesiology, Recreation, and Sport Studies, The University of Tennessee, Knoxville, TN 37996-2700, USA. jgardn25@utk.edu

Abstract

PURPOSE:

Ankle sprains are one of the most common injuries in competitive and recreational athletics. Studies have shown that the use of prophylactic ankle braces effectively reduces the frequency of ankle sprains in athletes. However, although it is generally accepted that the ankle braces are effective at reducing frontal plane motion, some researchers report that the design of the brace may also reduce ankle sagittal plane motion. The purpose of this study was to quantify lower extremity joint contributions to energy absorption during single-legged drop landings in three ankle brace conditions (no brace, boot brace, and hinged brace).

METHODS:

Eleven physically active females experienced in landing and free of lower extremity injury (age = 22.3 ± 1.7 yr, height = 1.66 ± 0.04 m, mass = 58.43 ± 5.83 kg) performed 10 single-leg drop landings in three conditions (one unbraced, two braced) from a 0.33-m height. Measurements taken were hip, knee, and ankle joint impulse; hip, knee, ankle, and total work; and hip, knee, and ankle joint relative work.

RESULTS:

Total energy absorption remained consistent across the braced conditions (P = 0.057). Wearing the boot brace reduced relative ankle work (P = 0.04, Cohen d = 0.43) but did not change relative knee (P = 0.08, Cohen d = 0.32) or hip (P = 0.14, Cohen d = 0.20) work compared with the no-brace condition.

CONCLUSIONS:

In an ankle-braced condition, ankle, knee, and hip energetics may be altered depending on the design of the brace.

PMID:
22157878
DOI:
10.1249/MSS.0b013e318240d564
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Lippincott Williams & Wilkins - Ovid Insights
    Loading ...
    Support Center