This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanics of Respiration, Subject name: Physiology
[{'content': 'Isocapnic exercise is - \nSelect and explain. \nA. Breathing for short duration against resistance, B. Breathing of decreased volume of ventilation, C. Breathing of increased volume of ventilation for long period, D. Breathing of decreased volume for long period', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e.. Breathing of increased volume of ventilation for long period o Specific training of respiratory muscles is generally carried out in one of two ways -Isocapnic hyperpnoea (isocapnic exercise)It requires the individual to breath at an increased volume of ventilation for an extended period.It primarily helps to develop respiratory' muscle endurance.Threshold loadingIt requires the individual to breath for short durations against a resistance.It focuses on building respiratory muscles strength.", 'role': 'assistant'}]