It appears that during isometric contractions at 80 % of maximum voluntary isometric contraction (MVIC), the heads of the triceps start to fatigue at 50, 40 and 65 seconds, for the lateral, long and
medial heads respectively.
Not exact matches
«Tri» means, well, three and «ceps» means
head — they have the long,
medial and lateral
heads which are located on the upper inside, lower inside and lateral side
respectively.
The
medial and lateral
heads of the gastrocnemius originate on the
medial and lateral condyle of the femur,
respectively.
The lateral and
medial heads originate from the lateral and
medial sides (
respectively) of the distal posterior femur.
They reported PCSA measures of 4.13 cm2, 3.60 cm2 and 3.21 cm2 in each the lateral, long and
medial heads,
respectively.
They reported average fascicle lengths for the lateral, long and
medial heads of 82.5, 136.5 and 120.0 mm,
respectively.
Additionally, another study by Kawakami et al. (1993) that measured 32 males ranging in physical activity status (untrained to bodybuilders) found that the pennation angle ranged widely between 15 and 53 degrees in the long
head of the triceps compared to 9 to 26 degrees in the
medial head,
respectively.
They reported the pennation angle of the
medial and lateral fibers of the clavicular
head as 31.2 and 29.4 degrees,
respectively.