With exercise the rest period is just as important as the physical intensity. Rest plays a crucial role in cognitive and skeletal muscle fiber production. The recommended amount of rest varies on the type of exercise. Rest includes: sleeping, relaxing in between sessions, and rest periods in between trials.
A good nights rest after an intense workout is necessary for muscle repair. During a heavy muscle contractions fibers are breaking down at a fast rate in order to provide energy demands for the workout. Not only are muscles breaking down, but lactic acid is building up and sleep allows the body to recuperate. Rest is important aspect of cognitive operations as well, as muscles are becoming trained the memory processes are taking place in order to remember proper coordination and stimuli. Long term memory systems require adequate sleep and rest in order to transpose symbols and thoughts into the long term memory making future workouts more beneficial. Rest periods are also important in between sets, especially during strength/power training. When we use a large amount of energy (ATP) the metabolic pathway is non-oxidative, therefore building up with lactic acid. Rest periods allow for the clearance of lactic acid and the reproduction of glucose—for the next trial.
So, next time you sleep in late, you can say that it is apart of your exercise routine!
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