The assumption of risk doctrine shifts liability for an accident to those who engaged in inherently risky activities. During a waterpark accident lawsuit, for example, the park may claim it is not liable for damages because you voluntarily participated in an activity where injury or death was a constant risk.
However, even if the activity was considered inherently risky, the park may still be liable for your injuries if it violated state safety laws or regulations or somehow increased your risk. If the equipment was poorly maintained or the employees did not receive the training needed to provide adequate safety instructions, assumption of risk likely won’t be seen as a valid defense.