Enhancing Exercise and Psychotherapy to Treat Pain and Addiction in Opioid Use Disorders ("EXPO" Pilot Trial)

The purpose of this pilot trial is to determine the feasibility of integrating exercise and psychotherapy that is specifically targeted to reducing and managing pain into residential drug treatment programs. The investigators will evaluate the feasibility (adherence) of integrating 'assisted' rate cycling, voluntary rate cycling and psychotherapy for pain (I-STOP) in participants with an opioid use disorder (OUD) and pain enrolled in residential drug treatment programs. The investigators will also explore the potential effects of 'assisted' rate cycling, voluntary rate cycling and I-STOP on pain, cravings, depression, anxiety, weight and sleep.