Fig. 5 | Scientific Reports

Fig. 5

From: Population-based trends and distributional characteristics in sit-ups performance among school-aged girls in urban China over three decades

Fig. 5

Means, standard deviations and fitted lines of body mass index among urban Chinese girls aged 7–18 years from 1985 to 2019 by age. The dots represent the means and the dashed line represents the fitted lines. The best-fitting/most parsimonious sample-weighted regressions (linear or quadratic or cubic regressions) were performed. Body mass index data were reported only after 2000.

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