Comparing Olympic weightlifters and untrained control subjects
during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in latissimus dorsi muscle activity between the two groups.
Comparing two different velocities
during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in gluteus maximus muscle activity between the two speeds used (45.7 vs. 30.5 cm / s).
Comparing two different velocities
during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in latissimus dorsi muscle activity between the two speeds used (45.7 vs. 30.5 cm / s).
They noted that the peak in gluteus maximus muscle activity
during the isokinetic lift occurred at 83 % of lift height, which was after the point at which peak force was produced at 67 % of lift height.
Comparing two different velocities
during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in quadriceps muscle activity between the two speeds used (45.7 vs. 30.5 cm / s).
For example, Masuda et al. (2005) found that ball velocity during maximal kicking efforts by university soccer players was associated with hip adductor but not knee extensor torque production
during isokinetic testing.
Testing strength when muscles are changing length (such as
during isokinetic dynamometry or during a conventional barbell lift) must necessarily involve a reduction in maximal force - generating capacity as a result of both of these relationships.
Noe et al. (1992) assessed erector spinae muscle activity
during an isokinetic machine deadlift, and found that erector spinae muscle activity peaked at 83 % of lift height, which was after the point where peak force output was produced (67 % of lift).
Marchant, D.C., Greig, M., & Scott, C. (2009) Attentional focusing instructions influence force production and muscular activity
during isokinetic elbow flexions.