Maybe a War Thunder-esque throttle system for running where moving the scroll wheel back or forward while sprinting you can change how fast you go and how much stamina is used.
In addition to this, I guess you can use stuff while sprinting now like guns, but it will get increasingly wobbly and inaccurate until 50% sprint strength or above, at which point you can’t use them anymore. For comsumables like food, increasing the time it takes to use it while sprinting any amount.