These muscles get negatively affected by poor hip angle when seated for long periods of time. (kingofthegym.com)
Several studies have been performed to explore the way in which hamstrings EMG amplitude changes with hip angle during resistance training exercises (Da Silva et al. 2009a; Zebis et al. 2013). (strengthandconditioningresearch.com)
They noted that the split squat stance with the shortest step length (55 % of leg length) and a perpendicular shank angle (90 degrees) involved the most acute peak hip angle for both legs. (strengthandconditioningresearch.com)