Complex sentence: Some riders complained that the restraints give too much room for the riders to "fall forward" during the lift.People who were barrel-chested, overweight or obesecomplained of chest compressions during hte moments that they were on the main lift.
Split into simpler sentences: Some riders complained that the restraints give too much room for the riders to "fall forward" during the lift. Also, people who are barrel-chested, overweight or obese may have their chest compressed for the moments that they are on the main lift.