ENS 401A Lecture Notes - Lecture 6: Lactate Dehydrogenase, Creatine Kinase, Glycogen
5 Apr 2017
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Definition of hiit: hiit (true hiit) Defined by maximal or near maximal performance (movement quality) Example: best 40-yard sprint time (e. g. 5 seconds) Work interval is shorter than recovery interval. Defined by some measure of effort (movement quantity) Example: pushing as hard as possible under fatigue, but 40-yeard dash in 7 seconds. Work interval longer or equal to the recovery interval. As intensity drops, so does kcal burn rate. Research true hiit workouts: confirmed. Time-efficiency shorter workouts (e. g. 3x20 sec, 3x/week timmons, uk) Up to 90% less training volume (amount of work performed) Improved health blood glucose control: unconfirmed. Weight loss crossfit ruth = 180-195 kcal 2000 needed weekly for effective weight loss. Recap: anaerobic pathways, phosphagen system, lactate system. Anaerobic: limited energy source, produces energy rapidly, use carbohydrates. Needed during any change in activity or exercise intensity when energy demand > current energy availability: additional energy. When energy demand (intensity) > maximal capacity of aerobic pathway (non- steady state)
