Article

The purpose of this research was to determine how fluid volume changes in the
residual limbs of people with transtibial amputation were affected by activity
during test sessions with equal durations of resting, standing, and walking.
Residual limb extracellular fluid volume was measured using biompedance analysis
in 24 participants. Results showed that all subjects lost fluid volume during
standing with equal weight-bearing, averaging a loss rate of -0.4%/min and a mean
loss over the 25 min test session of 2.6% (standard deviation [SD] 1.1). Sixteen
subjects gained limb fluid volume during walking (mean gain of 1.0% [SD 2.5]),
and fifteen gained fluid volume during rest (mean gain of 1.0% [SD 2.2]). Walking
explained only 39.3% of the total session fluid volume change. There was a strong
correlation between walk and rest fluid volume changes (-0.81). Subjects with
peripheral arterial disease experienced relatively high fluid volume gains during
sitting but minimal changes or losses during sit-to-stand and stand-to-sit
transitioning. Healthy female subjects experienced high fluid volume changes
during transitioning from sit-to-stand and stand-to-sit. The differences in fluid
volume response among subjects suggest that volume accommodation technologies
should be matched to the activity-dependent fluid transport characteristics of
the individual prosthesis user.

Langue : ANGLAIS