passages.id: 1297
passages.type: sentence
passages.text: Recruited 249 adults from Washington State aged 55 to 75 with a doctor-confirmed diagnosis of osteoarthritis to participate in aquatic classes .
entities.id: 1298
entities.type: intervention
entities.text: aquatic classes
entities.id: 1299
entities.type: participant
entities.text: 249 adults from Washington State aged 55 to 75 with a doctor-confirmed diagnosis of osteoarthritis to participate in aquatic classes