title: Brief report: using actigraphy to compare physical activity levels in adolescents with chronic pain and healthy adolescents.
abstract: OBJECTIVE
  This study compared activity levels of adolescents with chronic pain and healthy adolescents, and investigated relations between actigraphy and subjective measures of activity limitations and depression.
  
  
  METHODS
  Forty adolescents (n = 20 with chronic pain, n = 20 otherwise healthy; 12-17 years; 72.5% females) participated. Adolescents completed questionnaires regarding pain, activity limitations, and depression. Activity levels were assessed for 7 days using the Actiwatch 64 device, yielding mean and peak activity levels, and time spent in moderate and sedentary activity.
  
  
  RESULTS
  Physical activity was lower in adolescents with chronic pain than in healthy peers. Adolescents with chronic pain reported significantly higher levels of activity limitations and depression. Age and gender were related to activity. Higher activity was inversely correlated with pain frequency and depression. Peak activity was also significantly inversely related to self-reported pain intensity and activity limitations.
  
  
  CONCLUSIONS
  Actigraphy may be useful for examining physical activity outcomes in adolescents with chronic pain.
authors.affiliation: Oregon Health & Science University, Department of Anesthesiology, 3181 SW Sam Jackson Park Rd, UHS-2, Portland, OR 97239, USA. longann@ohsu.edu
authors.forename: Anna C
authors.initials: AC
authors.lastname: Long
authors.forename: Tonya M
authors.initials: TM
authors.lastname: Palermo
authors.forename: Anne M
authors.initials: AM
authors.lastname: Manees
mesh_terms: D000293:Adolescent; D002648:Child; D002908:Chronic Disease; D003710:Demography; D003863:Depression / Q000175:diagnosis; D004594:Electrophysiology / Q000295:instrumentation; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D010146:Pain / Q000175:diagnosis* / Q000503:physiopathology*; D010147:Pain Measurement; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires