How much of a difference does it make if you wear racing flats or spikes for a workout compared with just regular trainers ie asics gel fortitude II? Does it make your legs stronger if you wear just regular trainers? I usually like to wear flats or spikes only on race day so that my shoes feel unusually light on race day and I feel faster. What does letsrun think? Is it better to wear trainers or flats or spikes for a track workout?
For fast workouts, always wear flats or spikes. You're training so that you are prepared for racing. If you wear trainers, you won't be able to run fast enough and your feet and calves will remain weak so you'll get sore calves in your race. Wearing trainers so that you 'feel faster' when you race is bullshit. You might feel faster but you'll run slower.