Dostal et al. (1986) reported that the adductor magnus displayed muscle moment arm lengths of -0.3 cm (i.e. external rotation) and 0.4 cm (i.e. internal rotation) for the middle and posterior portions, respectively. (strengthandconditioningresearch.com)
Supposed to be his great magnus opus it was disappointing, not least to him. (totalpolitics.com)
Whether the adductor magnus displays greater EMG activity in greater degrees of hip flexion is unclear. (strengthandconditioningresearch.com)