Final answer:
The statement is false; both EMST and IMT require a tight lip seal for effective respiratory muscle strength training.
Step-by-step explanation:
The statement that EMST (Expiratory Muscle Strength Training) and IMT (Inspiratory Muscle Training) do not require a tight lip seal for the exercises is false. Both EMST and IMT are therapeutic techniques that aim to improve respiratory muscle strength. For these exercises to be most effective, a proper seal is crucial. With EMST, the purpose is to train the muscles responsible for breathing out, whereas IMT focuses on the muscles that help with breathing in. A tight lip seal ensures that pressure is maintained during the exercises, thereby maximizing the workout of the respiratory muscles. This tight seal is essential for generating the resistance necessary to build muscle strength in both EMST and IMT protocols.