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Table 3 Correlations between self-reported physical activity (International Physical Activity Questionnaire total) and fibromyalgia symptomology assessments

From: Physical activity is related to function and fatigue but not pain in women with fibromyalgia: baseline analyses from the Fibromyalgia Activity Study with TENS (FAST)

Outcome domain Outcome variable No. of subjects Pearson’s correlation (unadjusted) Partial correlation (BMI and age-adjusted)
r 95% CI p Value r 95% CI p Value
Performance-Based Function Endurance (6MWT, ft) 157 0.30 (0.12, 0.40) < 0.001 0.23 (0.05, 0.30) 0.005
Strength (5TSTS time, s) (ln) 154 − 0.09 (− 0.21, 0.11) 0.26 − 0.02 (− 0.13, 0.18) 0.86
Self-reported function PROMIS PF 157 0.27 (0.10, 0.39) 0.001 0.21 (0.07, 0.34) 0.009
SF-36 PF 157 0.21 (0.07, 0.35) 0.009 0.15 (− 0.01, 0.32) 0.07
Pain Resting pain (0–10) 158 0.01 (− 0.15, 0.16) 0.95 − 0.03 (− 0.12, 0.19) 0.73
Movement pain (6MWT) 158 0.02 (− 0.13, 0.18) 0.77 0.03 (− 0.09, 0.22) 0.70
Movement pain (5TSTS) 157 − 0.01 (− 0.17, 0.15) 0.88 − 0.02 (− 0.15, 0.17) 0.85
BPI severity 158 − 0.12 (− 0.24, 0.07) 0.15 − 0.11 (− 0.23, 0.08) 0.17
BPI interference 158 − 0.15 (− 0.24, 0.04) 0.06 − 0.13 (− 0.22, 0.04) 0.12
Pain sensitivity PPT cervical (ln) 157 0.15 (− 0.02, 0.29) 0.06 0.17 (0.01, 0.32) 0.04
PPT lumbar (ln) 157 0.16 (0.02, 0.30) 0.04 0.17 (0.01, 0.32) 0.04
PPT leg (ln) 157 0.11 (− 0.06, 0.29) 0.18 0.12 (− 0.02, 0.26) 0.13
CPM lumbar (%) 136 0.06 (− 0.11, 0.23) 0.46 0.05 (− 0.13, 0.21) 0.54
CPM leg (%) 132 − 0.03 (− 0.22, 0.15) 0.76 − 0.01 (− 0.20, 0.17) 0.94
Fatigue Resting fatigue (0–10) 158 − 0.08 (− 0.18, 0.03) 0.34 − 0.03 (− 0.18, 0.16) 0.69
Movement fatigue (6MWT) 158 − 0.08 (− 0.18, 0.03) 0.30 − 0.06 (− 0.16, 0.15) 0.45
Movement fatigue (5TSTS) 158 − 0.04 (− 0.18, 0.14) 0.47 − 0.04 (− 0.17, 0.14) 0.64
Multidimensional (MAF) 157 − 0.02 (− 0.18, 0.14) 0.79 − 0.01 (− 0.17, 0.15) 0.99
Psychological constructs Catastrophizing (Pain Catastrophizing Scale) 158 0.01 (− 0.21, 0.24) 0.94 − 0.02 (− 0.10, 0.22) 0.80
Fear of movement (TSK) 158 − 0.17 (− 0.31, − 0.02) 0.03 − 0.16 (− 0.29, −0.02) 0.04
Disease impact FIQR total 158 − 0.02 (− 0.17, 0.14) 0.83 − 0.07 (− 0.15, 0.16) 0.40
Quality of life Physical (SF-36 PCS) 156 0.22 (0.06, 0.35) 0.006 0.18 (0.02, 0.32) 0.03
Emotional (SF-36 MCS) 156 − 0.06 (− 0.21, 0.09) 0.48 − 0.05 (− 0.18, 0.08) 0.55
  1. Abbreviations: MVPA Moderate to vigorous activity, 6MWT 6-minute walk test, 5TSTS Five Times Sit to Stand Test, PF Physical Function T-score for Patient-Reported Outcomes Measurement Information System physical function static short form, SF-36 PCS 36-item Medical Outcomes Study Short Form Health Survey Physical Component Summary, BPI Brief Pain Inventory, PPT Pressure pain threshold, CPM Conditioned pain modulation, MAF Multidimensional Assessment of Fatigue, TSK Tampa Scale for Kinesiophobia, FIQR Revised Fibromyalgia Impact Questionnaire, SF-36 MCS 36-item Medical Outcomes Study Short Form Health Survey Mental Component Score
  2. (ln) The natural logarithm of accelerometry IPAQ total was used
  3. All significance are bolded