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. 2023 Aug 15;35(10):2029–2037. doi: 10.1007/s40520-023-02521-9

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Fig. 2 — NF-L and performance tests (A–D): Scatterplot of NF-L of subjects classified according to their total SPPB score (A), Chair stand test score (B), Balance score (C) and Walking speed score (D). Medians as well as 10–90 percentiles are represented by horizontal lines, whereas each single result is represented by a dot