Table 3.

Comparison of steps per day and gait speed for participants with Parkinson’s disease from recent observational studies from 2004 to 2019.

Study	Sample size	Age, years	Disease duration, years	Mean Hoehn & Yahr stage	Mean [SD] steps per day	Mean [SD] gait speed, m/s
Current study	17	66.4 [11.3]	4.8 [4.0]	1.9	5650 [3331]	0.91 [0.07]
Pradhan et al. 46, 2019	30	68.6 [5.9]	7.8 [5.0]	1.4	6417 [2796]	NA
Toosizadeh et al. 30, 2015	15	71.2 [6.3]	5.9 [5.3]	2.8	4099 [2673]	0.66 [0.11]
Weiss et al. 47, 2014	40 (fallers)	66.5 [8.2]	6.1 [4.0]	2.9	3131 [3097]	NA
	67 (non-fallers)	64.0 [9.8]	5.2 [3.1]	2.4	3553 [3257]	NA
Nakae et al. 48, 2014	10	NA	12.6 [5.6]	NA	NA	0.83
Wallén et al. 49, 2014	66	73.1 [5.8]	NA	2.5	4730 [3210]	NA
Lord et al. 50, 2013	89	67.3 [9.9]	NA	2.0	5452 [2501]	NA
Cavanaugh et al. 51, 2012	33	67.1 [8.8]	4.4 [4.2]	2.4	10,261 [4333]	NA
Nakae et al. 52, 2011	9	66.4 [5.3]	9.2 [2.2]	NA	NA	0.99
Ford et al. 53, 2010	12	NA	NA	2.0	8996	NA
Sue Lord et al. 29, 2008	12	70.5 [3.3]	8.0 [3.0]	2.9	NA	0.83 [0.16]
Skidmore et al. 54, 2008	24	70.0 [9.0]	7.5 [3.8]	2.7	3981 [1448]	NA
Xanthopoulos et al. 55, 2008	16	71.0 [11.0]	7.0 [4.2]	NA	4378 [2057]	NA
Busse et al. 56, 2004	10	67.1 [8.2]	NA	NA	3818	0.99 [0.16]

All estimated measures reported in this table are mean [standard deviation] values unless otherwise noted. NA not available. Studies were selected from a PubMed search using “Gait activity”, “Gait speed”, and “Parkinson’s disease” and included studies where wearable sensors were worn outside a clinical setting in the real world.