These figures indicate that the hamstrings are not particularly active in hip adduction in the anatomical position. (strengthandconditioningresearch.com)
One study by Lovell et al. (2012) reported that the supine isometric hip adduction in 45 degrees of hip and knee flexion was the best position for producing maximal activity in the gracilis. (strengthandconditioningresearch.com)
Jensen et al. (2014) found that concentric - eccentric elastic - band - based resistance training was successful for increasing eccentric hip adduction strength in soccer players over an 8 - week period. (strengthandconditioningresearch.com)