It would help with running.
Consider Formula One racecars.
To be faster you need power, but there is a limit to how much power
you can put on the ground. To increase this limit, force to ground
must be applied on the wheels. Increasing weight can do this, but
weight makes handling worse and require more power. So we need some
virtual weight, we call it downforce and get it from airflow around
the car. A wing can make a plane fly, but if we put it upside down, it
can make a car NOT fly.
These cars have wings to push them down onto the ground so that they can improve friction with the ground and use that to push forward.
Usually people dont run fast enough to need wings to push them down. You could use weights. I was talking just yesterday about running underwater. It is hard to get traction because underwater persons built as I am weigh nothing or less, due to buoyancy. Pushing off the bottom tends to leave you in midwater with nothing to push against.
If I load up with weight belts to offset my buoyancy then I can run along the bottom and the main impediment to forward motion becomes water resistance.
In microgravity you could load up with weight belts or weighted clothes (I hope those are weighted pants you have on...) to offset your tiny weight, just as I put on weight belts in the pool to offset my effectively tiny weight. You will still have inertia with those weights and so plan ahead to stop.
They are easy to make and require no tech, but just as with race cars weighted pants makes handling worse and requires more power.
Better would be fans! If you are in microgravity but in an atmosphere, you could direct the fans on your harness upwards and push down against the atmosphere: downforce fans, just as the cars have downforce wings. A fan angled down at a 45 degree angle would give you downforce but also a forward vector, so you could rollerblade the length of the space station at great speed. Fans could flip forward and act as brakes when you need to stop. Best fans can spin and point down, allowing you to jump huge distances and dunk the ball every time.