cosa intendi x "è soggettiva" ?
cosa intendi x "è soggettiva" ?
Ho letto uno studio che indicava come la low carb in generale (e, come conseguenza anche la chetogenica) non fosse indicata per la massa, benché possa essere progettata anch'essa in ipercalorica.
Quando lo recupero lo posto.
se metti frequenti ricaricche e setti bene le calorie puoi anche farle per massa.....Originariamente Scritto da tattoos
le low carb troppo protratte nn sono buene per massa perchè la carenza di glucosio mette l'organismo in stato di "famina" (carenza di cibo), ma se si mettono ricariche frequenti (ogni 3 o 4 gg di very low carb) e calorie sul mantenimento durante la fase low con circa 0,5 o 1gr cho/kg nel post wo, si potrebbe anche fare, e credo che sia ottima per la massa..
come settare le ricariche ogni 3 giorni : 1 giorno di ricarica o qualche ora?
"The effect of a low-carbohydrate diet on performance, hormonal and metabolic responses to a 30-s bout of supramaximal exercise.
Langfort J, Zarzeczny R, Pilis W, Nazar K, Kaciuba-Uscitko H.
Department of Applied Physiology, Medical Research Centre, Polish Academy of Sciences, Warsaw.
The aim of this study was to find out whether a low-carbohydrate diet (L-CHO) affects: (1) the capacity for all-out anaerobic exercise, and (2) hormonal and metabolic responses to this type of exercise. To this purpose, eight healthy subjects underwent a 30-s bicycle Wingate test preceded by either 3 days of a controlled mixed diet (130 kJ/kg of body mass daily, 50% carbohydrate, 30% fat, 20% protein) or 3 days of an isoenergetic L-CHO diet (up to 5% carbohydrate, 50% fat, 45% protein) in a randomized order. Before and during 1 h after the exercise venous blood samples were taken for measurement of blood lactate (LA), beta-hydroxybutyrate (beta-HB), glucose, adrenaline (A), noradrenaline (NA) and insulin levels. Oxygen consumption (VO2) was also determined. It was found that the L-CHO diet diminished the mean power output during the 30-s exercise bout [533 (7) W vs 581 (7) W, P < 0.05] without changing the maximal power attained during the first or second 5-s interval of the exercise. In comparison with the data obtained after the consumption of a mixed diet, after the consumption of a L-CHO diet resting plasma concentrations of beta-HB [2.38 (0.18) vs 0.23 (0.01) mmol x l(-1), P < 0.001] and NA [4.81 (0.68) vs 2.2 (0.31) nmol x l(-1), P < 0.05] were higher, while glucose [4.6 (0.1) vs 5.7 (0.2) mmol x l(-1), P < 0.05] and insulin concentrations [11.9 (0.9) vs 21.8 (1.8) mU x l(-1)] were lower. The 1-h post-exercise excess of VO2 [9.1 (0.25) vs 10.6 (0.25) 1, P < 0.05], and blood LA measured 3 min after the exercise [9.5 (0.4) vs 10.6 (0.5) mmol x l(-1), P < 0.05] were lower following the L-CHO treatment, whilst plasma NA and A concentrations reached higher values [2.24 (0.40) vs 1.21 (0.13) nmol x l(-1) and 14.30 (1.41) vs 8.20 (1.31) nmol x l(-1), P < 0.01, respectively]. In subjects on the L-CHO diet, the plasma beta-HB concentration decreased quickly after exercise, attaining approximately 30% of the pre-exercise value within 60 min, while insulin and glucose levels were elevated. The main conclusions of this study are: (1) a L-CHO diet is detrimental to anaerobic work capacity, possibly because of a reduced muscle glycogen store and decreased rate of glycolysis; (2) reduced carbohydrate intake for 3 days enhances activity of the sympathoadrenal system at rest and after exercise."
...ecco lo studio. Il confronto è quindi su diete con mix diversi, ovviamente su livelli isoenergetici nei confronti di sforzi che si avvicinano agli lattacidi (30 sec.).
Negli individui con dieta low carb (5 % di CHO) il livello di glicogeno ed il livello di glicolisi è ridotto rispetto agli altri con HCO (50%). Viceversa è più alta la secrezione delle catecolemine.
interessante...
scusa l'ingoranza ma... in parole povere che significa?Originariamente Scritto da tattoos
Ora purtroppo non ho granché tempo per rispondere. Appena lo trovo, posto...
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