Table 1 Participant inclusion and exclusion criteria

Fort Bragg—In-processing

(Specific Aim #1; Specific Aim #4)

• Active duty service members in-processing to a unit at Fort Bragg, NC

• Recruited  ≤ 14 days following in-processing medical screening

• 18–44 years of age^a

• On limited duty status for any reason

• Scheduled for a deployment or separation within 12 months

• Pregnant^b

WRNMMC—Injured (Specific Aim #2)

• Active duty service member receiving conservative care for a lower extremity or low back MSKI

• Recruited  ≤ 3 days following presentation to the physical therapy clinic for care of the index MSKI

• 18–44 years of age^a

• Musculoskeletal related surgery

• MSKI within the previous 6 months that resulted in altered/missed physical activity for  ≥ 3 consecutive days

• Ongoing TBI related issues^c

• Pregnant^b

Fort Bragg—Injured (Specific Aim #4)