kingnbajam zei:
denken is leuk, maar bewijs is wat telt. Ik ben voorstander van rustiger tempo voor langere duur, dat is subjectief en werkt wel voor mij.
Ik hoef geen versnelde stofwisseling de rest van de dag, omdat m'n dieet in orde is. Wie zegt dat je lichaam door een versnelde stofwisseling niet aan je spieren vreet?
Ik denk dat beide manieren zo zijn voordelen hebben en dat je gewoon moet doen waar jij je goed bij voelt. Met beide manieren kun je je doel bereiken en cardio op een rustig tempo is met het oog op spierverlies waarschijnlijk wel veiliger.
In onderstaand onderzoek wordt aangegeven dat in de herstelperiode voornamelijk vet als brandstof wordt gebruikt. Dit nadat tijdens de oefening zelf voornamelijk glucose als brandstof is gebruikt.
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Utilization of skeletal muscle triacylglycerol during postexercise recovery in humans.
Kiens B, Richter EA.
Copenhagen Muscle Research Centre, August Krogh Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark.
The utilization of muscle triacylglycerols was studied during and after prolonged bicycle ergometer exercise to exhaustion in eight healthy young men. Two days before exercise and in the postexercise recovery period, subjects were fed a carbohydrate-rich diet (65-70% of energy from carbohydrates). Exercise decreased muscle glycogen concentrations from 533 +/- 18 to 108 +/- 10 mmol/kg dry wt, whereas muscle triacylglycerol concentrations were unaffected (49 +/- 5 before vs. 49 +/- 8 mmol/kg dry wt after exercise). During the first 18 h after exercise, muscle glycogen concentrations were restored to 409 +/- 20 mmol/kg dry wt. In contrast, muscle triacylglycerol concentrations decreased (P < 0.05) to a nadir of 38 +/- 5 mmol/kg dry wt, and muscle lipoprotein lipase activity increased by 72% compared with values before exercise. Pulmonary respiratory exchange ratio values of 0.80-0.82 indicated a relatively high fractional lipid combustion despite the high carbohydrate intake. From 18 to 42 h of recovery, muscle glycogen synthesis was slow and muscle triacylglycerol concentrations and lipoprotein lipase activity were restored to the preexercise values. It is concluded that muscle triacylglycerol concentrations are not diminished during exhaustive glycogen-depleting exercise. However, in the postexercise recovery period, muscle glycogen resynthesis has high metabolic priority, resulting in postexercise lipid combustion despite a high carbohydrate intake. It is suggested that muscle triacylglycerols, and probably very low density lipoprotein triacylglycerols, are important in providing fuel for muscle metabolism in the postexercise recovery period.
PMID: 9688636
http://ajpendo.physiology.org/cgi/content/...full/275/2/E332
