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. Author manuscript; available in PMC: 2011 Feb 7.
Published in final edited form as: J AAPOS. 2006 Oct;10(5):424–429. doi: 10.1016/j.jaapos.2006.06.011

Table 3.

Twitch characteristics after 1 or 3 months of IGF exposure

Properties of single twitch Injected 1 month Control 1 month Injected 3 months Control 3 months
Total contraction time (ms) 193.3 ± 55.5 253.8 ± 103.5 258.2 ± 76.5* 258.2 ± 76.5*
Time to peak force (ms) 17.8 ± 6.6 27.0 ± 9.1 26.5 ± 1.8 30.8 ± 3.0
Half-relaxation time (ms) 13.0 ± 1.6 12.8 ± 1.5 15.0 ± 1.9* 12.7 ± 1.0
Max dF/dt (g/s) 626.0 ± 81.6* 533.9 ± 83.7 889.5 ± 95.6* 760.2 ± 70.8
Time to max dF/dt (ms) 6.3 ± 2.8* 20.8 ± 5.8 17.5 ± 1.8* 22.8 ± 3.0