Hi there everyone!
I know all the hype about sp250 ,bsn no explode etc bla bla.. everyone knows what im talking about.. the preworkout supplements that give u insane energy ,focus and rage inside the gym.... (ive never used them,just read alota reviews,forums etc )..
any energy boosters for cardio? I read on a thread somewere that someone used GNC thermoboost for intense running?
I always run out of energy in running as I want to run long distances ,both for fat loss and hobby but always run outa energy..
(lol i dont suppose NO explode etc woud work rite?)
Please any suggestions?
12-26-2009, 02:40 AM #1
pre-workout supplements for Cardio,HIIT, etc (not weight training)
12-26-2009, 03:05 AM #2
12-26-2009, 05:01 AM #3
- Join Date: May 2006
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12-26-2009, 06:06 AM #4
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12-26-2009, 06:37 AM #5
Consider the nitrate-mediated oxygen-sparing properties of C-BOL =
Acta Physiol (Oxf). 2007 Sep;191(1):59-66. Epub 2007 Jul 17. Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Effects of dietary nitrate on oxygen cost during exercise.
Larsen FJ, Weitzberg E, Lundberg JO, Ekblom B.
AIM: Nitric oxide (NO), synthesized from l-arginine by NO synthases, plays a role in adaptation to physical exercise by modulating blood flow, muscular contraction and glucose uptake and in the control of cellular respiration. Recent studies show that NO can be formed in vivo also from the reduction of inorganic nitrate (NO(3) (-)) and nitrite (NO(2) (-)). The diet constitutes a major source of nitrate, and vegetables are particularly rich in this anion. The aim of this study was to investigate if dietary nitrate had any effect on metabolic and circulatory parameters during exercise. METHOD: In a randomized double-blind placebo-controlled crossover study, we tested the effect of dietary nitrate on physiological and metabolic parameters during exercise. Nine healthy young well-trained men performed submaximal and maximal work tests on a cycle ergometer after two separate 3-day periods of dietary supplementation with sodium nitrate (0.1 mmol kg(-1) day-1) or an equal amount of sodium chloride (placebo). RESULTS: The oxygen cost at submaximal exercise was reduced after nitrate supplementation compared with placebo. On an average Vo(2) decreased from 2.98 +/- 0.57 during CON to 2.82 +/- 0.58 L min(-1) during NIT (P < 0.02) over the four lowest submaximal work rates. Gross efficiency increased from 19.7 +/- 1.6 during CON to 21.1 +/- 1.3% during NIT (P < 0.01) over the four lowest work rates. There was no difference in heart rate, lactate [Hla], ventilation (VE), VE/Vo(2) or respiratory exchange ratio between nitrate and placebo during any of the submaximal work rates. CONCLUSION: We conclude that dietary nitrate supplementation, in an amount achievable through a diet rich in vegetables, results in a lower oxygen demand during submaximal work. This highly surprising effect occurred without an accompanying increase in lactate concentration, indicating that the energy production had become more efficient. The mechanism of action needs to be clarified but a likely first step is the in vivo reduction of dietary nitrate into bioactive nitrogen oxides including nitrite and NO.
J Appl Physiol 107: 1144-1155, 2009. First published August 6, 2009; doi:10.1152/japplphysiol.00722.2009
Stephen J. Bailey,1 Paul Winyard,2 Anni Vanhatalo,1 Jamie R. Blackwell,1 Fred J. DiMenna,1 Daryl P. Wilkerson,1 Joanna Tarr,2 Nigel Benjamin,2 and Andrew M. Jones1
Dietary nitrate supplementation reduces the O2 cost of low-intensity exercise and enhances tolerance to high-intensity exercise in humans
Pharmacological sodium nitrate supplementation has been reported to reduce the O2 cost of submaximal exercise in humans. In this study, we hypothesized that dietary supplementation with inorganic nitrate in the form of beetroot juice (BR) would reduce the O2 cost of submaximal exercise and enhance the tolerance to high-intensity exercise. In a double-blind, placebo (PL)-controlled, crossover study, eight men (aged 19-38 yr) consumed 500 ml/day of either BR (containing 11.2 - 0.6 mM of nitrate) or blackcurrant cordial (as a PL, with negligible nitrate content) for 6 consecutive days and completed a series of "step" moderate-intensity and severe-intensity exercise tests on the last 3 days. On days 4-6, plasma nitrite concentration was significantly greater following dietary nitrate supplementation compared with PL (BR: 273 - 44 vs. PL: 140 - 50 nM; P < 0.05), and systolic blood pressure was significantly reduced (BR: 124 - 2 vs. PL: 132 - 5 mmHg; P < 0.01). During moderate exercise, nitrate supplementation reduced muscle fractional O2 extraction (as estimated using near-infrared spectroscopy). The gain of the increase in pulmonary O2 uptake following the onset of moderate exercise was reduced by 19% in the BR condition (BR: 8.6 - 0.7 vs. PL: 10.8 - 1.6 ml-min-1-W-1; P < 0.05). During severe exercise, the O2 uptake slow component was reduced (BR: 0.57 - 0.20 vs. PL: 0.74 - 0.24 l/min; P < 0.05), and the time-to-exhaustion was extended (BR: 675 - 203 vs. PL: 583 ? 145 s; P < 0.05). The reduced O2 cost of exercise following increased dietary nitrate intake has important implications for our understanding of the factors that regulate mitochondrial respiration and muscle contractile energetics in humans.
Originally Posted by NO HYPE
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