Fig. 1From: Carnitine deficiency is associated with decreased exercise activity in hemodialysis patientsUnivariate regression analysis for the association between serum free carnitine and exercise capacity in HD patients. Correlation between free carnitine levels and the time-up-and-go test (a), knee extension strength (b), functional reach test (c), and the 10-m walk test (d). n = 37Back to article page