64 | Chapter 4 Figure 4.1. Flowchart of the inclusion of the participants. SPPB = Short Physical Performance Battery Baseline characteristics of the participants The median age was 76 years, and most participants (76%) were women (Table 4.1). Table 4.1. Baseline characteristics of the participants, presented as median (IQR) unless indicated otherwise. Participants (N = 229) Age (years)a 76.2 (71.3-79.7) Sex (female)b, N (%) 175 (76%) BMI (kg/m2)a 26.2 (23.7-29.3) Hand grip strength (kg)a 26.5 (22.5-31.6) Timed up and go (s)a 8.8 (7.5-10.5) Use of walking aid (yes)b, N (%) 38 (16.6%) Frailty status (yes)b, N (%) Non-frail Pre-frail 67 (29.3%) 162 (70.7%) a Presented as median (IQR) b Presented as n (percentage) Correlations between the SPPB and gait quality and quantity measures Table 4.2 shows the median with interquartile range of the SPPB and the gait quality and quantity measures. The range of the SPPB was between 5-12 with a median score of 10. The correlations between the SPPB scores and the 50th percentile of the gait quality and quantity measures are also shown in Table 4.2. All correlations were weak. Table 4.3 shows the
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