Fig. 1From: Longitudinal associations between physical activity and five risk factors of metabolic syndrome in middle-aged adults in GermanyFlow chart of study participation. N number of participants, WC waist circumference, BP blood pressure, BG blood-glucose, HDL high-density lipoprotein cholesterols, TG triglycerides; {} indicates numbers of cases with missing information. *Persons who participated in the study at least once were re-invited for every measurement point, and new participants were included at each measurement point to prevent sample attritionBack to article page