Fig. 2From: High-impact exercise in adulthood and vertebral dimensions in midlife - the Northern Finland Birth Cohort 1966 studyClassification of individuals into ‘high’, ‘mixed’ and ‘low’ impact groups on the basis of their self-reported sports participation at the ages of 31 and 46. *Badminton, volleyball, tennis, squash. #Floor ball, ice hockey, soccer, rink ball, basketballBack to article page