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. Author manuscript; available in PMC: 2008 Sep 15.
Published in final edited form as: Muscle Nerve. 2008 Sep;38(3):1128–1132. doi: 10.1002/mus.21075

Table 2.

Reference values for phase measured at 50 kHz

Age (years)
Muscle 20 30 40 50 60 70 80
Tibialis Anterior 7.94 7.94 7.75 7.38 6.85 6.20 5.47
Quadriceps 6.82 6.81 6.59 6.19 5.64 4.99 4.28
Biceps Brachii 3.79 3.88 3.89 3.82 3.68 3.48 3.22
Forearm Flexors 3.07 2.99 2.88 2.74 2.58 2.40 2.21
Medial Gastrocnemius 7.74 7.74 7.54 7.14 6.58 5.90 5.15

All measurements are in degrees (°)