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Table 1 Participant characteristics

From: Skeletal muscle morphology in sarcopenia defined using the EWGSOP criteria: findings from the Hertfordshire Sarcopenia Study (HSS)

  N Mean (SD) Min Max
Age (yrs) 99 72.4 (2.4) 68.3 76.8
Height (cm) 99 174.1 (6.5) 157.6 193.7
Weight (kg) 99 82.7 (12.6) 58.1 118.8
DXA lean mass (kg) 99 56.4 (6.5) 42.7 75.9
Grip strength (kg) 99 38.7 (8.1) 18.0 66.0
Walking speed (m/s)a 97 1.1 (0.2) 0.5 1.6
Chair rise time (s)b 96 17.1 (4.0) 8.3 27.2
Diagnosis of Sarcopenia 97 6 (6.2 %)   
Fibre morphology     
Satellite cell density (cell/ mm2)c 69 3.6 (2.5) 0.0 26.4
Satellite cell to fibre ratio 69 0.05 (0.04) 0.00 0.18
Fibre counts 69 189.5 (1.96) 23.0 723.0
Slow-fibre proportion (%) 99 43.9 (13.1) 18.9 88.3
Fast-fibre proportion (%) 99 56.1 (13.1) 11.7 81.1
Slow fibre area (μm2)d 95 4775 (1202) 2059 9868
Fast fibre area (μm2)d 95 3953 (1144) 1843 7424
Capillary density (capillary/mm2)e 96 146.5 (43.2) 57.1 254.1
Capillary to fibre ratioe 96 1.3 (0.3) 0.6 2.2
Fibre counts 96 248.5 (110.5) 44.0 577.00
  1. aData not available on two participants
  2. bData not available on three participants
  3. cGeometric mean (SD), 30 slides were unsuitable due to suboptimal SC staining
  4. d4 slides were unsuitable for fibre area determination
  5. e3 slides were unsuitable due to suboptimal capillary staining