“…Vignerová et al (2007), working with population-representative data on Czech children and adolescents from 1951 to 2001, find that the median BMI of females in their late teens significantly decreased, whereas that of their male coevals remained almost constant. Although this pair of trends is similar to trends in Japan, the significance of this similarity is unclear, since the two countries' paths have been radically different, Czechoslovakia having been under Communist rule from 1948to 1989 As for children, a number of studies have examined both the longterm height trend (Vignerová et al, 2006;Bielecki et al, 2012;Nú ñ ez and Pé rez, 2015) and the height and weight trends (Zellner et al, 2007;Johnson et (1947)(1948)(1949)(1950)(1951)(1952)(1953)(1954)(1955) are indispensable for tracing the declining BMI trend back to its origin. Funatogawa et al (2009) also analyze BMI trends of Japanese adults, but they do not draw on NNS data prior to 1956 5 .…”