Table 2.
Univariate Results for Fatigue Moderator Variables
| Effect Moderator | Number of Effects | Effect Size d (95% CI) | P Value |
|---|---|---|---|
| Patient Diagnostic Characteristics | |||
| Fibromyalgia Comorbidity | |||
| Yes | 21 | .808 (.580 to 1.036) | .73 |
| No | 15 | .755 (.481 to 1.029) | |
| Not reported | 11 | .931 (.590 to 1.271) | |
| Characteristics of the Exercise Stimulus | |||
| Intensity | |||
| Very Light to Light | 5 | .081 (-.402 to .565)a | .001 |
| Moderate | 30 | .955 (.795 to 1.115)b | |
| Vigorous/Incremental | 12 | .618 (.305 to .931)a,b | |
| Type | |||
| Continuous-increasing | 15 | .654 (.394 to .913)a | <.001 |
| Continuous-steady | 29 | .971 (.815 to 1.127)b | |
| Discontinuous | 3 | -.379 (-.961 to .203)c | |
| Measurement Features | |||
| Fatigue Measurement Time (hours) | |||
| During exercise - < 5 min post | 11 | .469 (.205 to .732)a | .002 |
| 5 min - 1 hr post | 10 | .732 (.448 to 1.016)a | |
| ≥4 hr post | 26 | 1.034 (.850 to 1.219)b | |
| Construct Measured | |||
| Overall Fatigue | 23 | .558 (.340 to .776)a | .004 |
| Mental Fatigue | 12 | .891 (.637 to 1.144)b | |
| Physical Fatigue | 12 | 1.112 (.855 to 1.368)b | |
| Measurement Format | |||
| Visual Analog Scale | 33 | .949 (.790 to 1.108)a | .001 |
| Categorical Questionnaire | 14 | .412 (.129 to .696)b | |
a,b
moderator levels with a different superscript differ significantly. The p value is for q-between.