Maximizing Energy After Traumatic Brain Injury

The PROMIS Fatigue item banks assess a range of self-reported fatigue symptoms that likely decreases one's ability to execute daily activities and function normally in family or social roles. The computerized adaptive test version provides a mean fatigue score. The Scale uses a T-score metric in which 50 is the mean for the population and 10 is the standard deviation of that population. Higher scores equal more fatigue. Scores were obtained at baseline, Week 8, Week 12, and Week 16 for each participant, and mean scores were calculated for each group at each time point.

The Modified Fatigue Impact Scale is a self-report instrument that assesses the impact of fatigue on performance of everyday activities. The Scale has 21 items in three subscales: physical, cognitive, and psychosocial. A 5-point scale ranging from 0 (never) to 4 (almost always) is used for rating each item; items are summed to obtain a total score. Higher scores indicate greater impact of fatigue on performance of everyday activities. Total scores were obtained at baseline, Week 8, Week 12, and Week 16 for each participant, and mean scores were calculated for each group at each time point.

The Modified Fatigue Severity Scale is a self-report instrument that assesses the severity of fatigue. The Scale has 9 items. A 7-point scale ranging from 1 (strong disagreement) to 7 (strong agreement) is used for rating each item; mean of the items yield a total score. Higher scores indicate greater fatigue severity. Total scores were obtained at baseline, Week 8, Week 12, and Week 16 for each participant, and mean scores were calculated for each group at each time point.

Participation Objective, Participation Subjective (POPS) evaluates participation in everyday life in persons with TBI. The scale consists of 26 items sorted into five categories: Domestic life; Major life activities; Transportation; Interpersonal interactions and relationships; and Community, recreational and civic life. Scores on the objective questions are converted into standardized z scores ranging from -3 to +3. Higher scores indicate greater frequency of participation in everyday life. Scores on the subjective questions range from +4, indicating a "most important" area of life that the person is engaging in at a satisfactory level, to -4, indicating an equally important area of life that the person wants to do either less of or more of. Total scores were obtained at baseline, Week 8, Week 12, and Week 16 for each participant, and mean scores were calculated for each group at each time point.

Physical activity data was collected with the Actical device. The Actical is a wireless, wearable body monitor that collects and analyzes raw physiological and lifestyle data. It was worn at the wrist for 3 days. Physical activity data was derived in terms of metabolic equivalents (METs) when participants engaged in physical activity. Total energy expenditure over 3 days were obtained at at baseline, Week 8, Week 12, and Week 16 for each participant, and mean scores were calculated for each group at each time point.

The Work Role Functioning Questionnaire (WRFQ) assesses the degree of perceived work disability due to a chronic health problem. The questionnaire consists of 27 items divided into five subscales: Work scheduling demands, Physical demands, Mental demands, Social demands, and Output demands. The participant scores each item on a 5 point ordinal scale (0 = difficult all the time, 4 = difficult none of the time). Each subscale is scored separately, by adding the response of each item, and converting the score from 0 (limited all the time) to 100 (never limited).