Table 2.  Physical function evaluation data.

Physical function	All patients (n=26)	SMA type 3 (n=15)	SMA type 2 (n=11)	P value
6MWT, m	0 [91]	74.5 [307.8]	0 [0]	0.009
HFMSE	15 [48.0]	46 [37.5]	3 [3.5]	0.01
RULM	11.5 [26]	30 [19.5]	4 [2]	0.01
Right grip, N	7.8 [16.2]	18.6 [67.8]	3.9 [4.9]	0.012
Left grip, N	10.8 [20.6]	22.5 [43.6]	3.9 [8.8]	0.011
Right Palmar pinch, N	2.9 [5.9]	6.8 [18]	1.9 [2.0]	0.015
Left Palmar pinch, N	3.4 [5.35]	6.3 [14.2]	1.9 [1.5]	0.01
Right Key pinch, N	5.8 [11.3]	13.2 [43.3]	1.9 [3.7]	0.01
Left Key pinch, N	4.9 [7.9]	7.7 [30.1]	1.9 [2.5]	0.011
Normalized right grip, N/kg	0.34 [0.81]	0.93 [1.50]	0.20 [0.23]	0.006
Normalized left grip, N/kg	0.32 [0.62]	0.79 [1.52]	0.22 [0.20]	0.01
Normalized right Palmar pinch, N/kg	0.15 [0.31]	0.27 [0.36]	0.07 [0.09]	0.05
Normalized left Palmar pinch, N/kg	0.13 [0.28]	0.32 [0.31]	0.07 [0.08]	0.011
Normalized right Key pinch, N/kg	0.22 [0.77]	0.62 [0.88]	0.12 [0.15]	0.011
Normalized left Key pinch, N/kg	0.16 [0.42]	0.41 [0.46]	0.07 [0.09]	0.016

Data given as median [IQR]. Maximum possible scores: HFMSE, 66; RULM, 37. Normalized data are relative to body weight.