Reliability of near-infrared spectroscopy measures of cerebral oxygenation and blood volume during handgrip exercise in nondisabled and traumatic brain-injured subjects.

We compared the test-retest reliability of near-infrared spectroscopy (NIRS) measures of cerebral oxygenation and blood volume during a rhythmic handgrip exercise in 13 nondisabled subjects and 25 subjects with moderate to severe traumatic brain injury (TBI). Subjects with TBI (average Glasgow Coma Scale score = 4.2, average time since injury = 21 mo) had completed an acute brain injury rehabilitation program.

Effects of circuit training on body composition and peak cardiorespiratory responses in patients with moderate to severe traumatic brain injury.

Objective: To examine the time course of the changes in body composition and peak cardiorespiratory fitness resulting from routine brain injury rehabilitation program (BIRP) activities and circuit training in patients with moderate to severe traumatic brain injury (TBI).

Design: Time-series design spanning 18 weeks. Trials T1 and T2 were completed in weeks 1 and 2, respectively, to establish reliability of the measurements, followed by trial 3 (T3) 4 weeks later to evaluate changes resulting from the BIRP.

Reliability of peak cardiorespiratory responses in patients with moderate to severe traumatic brain injury.

Objective: To examine the test-retest reliability of acute physiologic responses in patients with traumatic brain injury (TBI).

Design: Repeated measures within 1 week.

Setting: Brain injury rehabilitation program and community rehabilitation hospital.