Table 2. Median qualitative grades for selected muscles at baseline and at 12 months.

Muscle	Baseline median grade	12 month median grade	Number with same/increased/decreased grade	P value
GM	4	4	25/4/3	.705
BFLH	4	4	29/1/2	.564
ST	3	4	23/4/5	.739
SM	3	3	20/5/7	.509
BFSH*	2b	2b	20/4/5	.739
SAR	2b	2b	19/8/5	.405
VM	2b	3	16/8/8	.819
GRAC	2a	2b	23/4/5	.739
VL	2b	2b	17/10/5	.346
RF	2a	2b	22/6/4	.527
MG	2b	2b	21/7/4	.218
LG	2b	2b	18/10/4	.073
PL	2b	2a	15/7/10	.655
SOL	2a	2b	23/5/4	.739
TA	2a	2a	26/3/3	.739

Number of patients with the same, an increased or decreased qualitative grade at the 12 months follow up compared to the baseline grade is given. Non-parametric paired Wilcoxon signed rank test was used to assess change.

^*BFSH was graded in 29 participants. BFSH in 3 subjects could not be graded due to poor visualisation. GM = Gluteus Maximus, BFLH = Biceps Femoris long head, ST = Semitendinosus, SM = Semimembranosus, BFSH = Biceps Femoris short head, SAR = Sartorius, VM = Vastus Medialis, GRAC = Gracilis, VL = Vastus Lateralis, RF = Rectus Femoris, MG = Medial Gastrocnemius, LG = Lateral Gastrocnemius, PL = Peroneus Longus, SOL = Soleus, TA = Tibialis Anterior.