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). - Merriwether EN; Frey-Law LA; Rakel BA; Zimmerman MB; Dailey DL; Vance CGT; Golchha M; Geasland KM; Chimenti R; Crofford LJ; Sluka KA (Arthritis research & therapy, 2018)