The Non-Linear Effects of Urban Green Space on Promoting Physical Activity of Old Adults at Different Obesity Status in Semi-Arid Area: A Case Study of Lanzhou, China.

Figure 7b illustrates the nonlinear effect of land use diversity on physical activity for the two elderly groups, with the images showing different shapes, with the obese elderly group depicting a decreasing trend in physical activity at a land use diversity of 0.6 and the standard‐weight elderly group presenting an increasing trend at a land use diversity of over 0.7.

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