Scientifically Backed Sustained Energy*
NOW Sports® Sustained Energy uses Xtenergy
A natural caffeine ingredient derived from green coffee beans (Coffea robusta) using a unique extraction process and a patented delivery technology that allows for a sustained release profile over several hours.*
Sustained Attention Task Study*
Randomized, double-blind, placebo-controlled; 27 medically healthy participants.
Results: Caffeine significantly improved performance cutting mistakes by 50%, reduced incorrect responses by 30%, and speeding up reaction time by 3%.*1
Study on How Long Caffeine Stays in the Blood and How Much is Absorbed Over Time
Randomized, double-blind, single-dose, active-controlled, crossover; 26 healthy males (aged 26 – 38).
Results: Sustained-Release Caffeine (SRC) form Xtenergy formulations shows better effect on mood and alertness from 4 to 12 hours after taking it,* Reduces jitteriness for up to 8 hours and decreases tiredness later on.* Xtenergy is more effective for relaxation and overall mood after the initial 1-2 hours.* There is no safety issues or side effects reported for Xtenergy formulations and they stay in the body longer than immediate-release caffeine (IRC).*2
Effects of Caffeine on Attention in Healthy Adults Study
Randomized, placebo-controlled; 82 healthy adults both males and females (aged 40-60 years), who consume little or no caffeine.
Results: Caffeine improved attention and reaction times in both Mackworth Clock and RVIP tests.* More correct hits and faster reaction times with caffeine.* Better performance at 70 and 120 minutes post-caffeine.* Faster peak velocity and reaction time at 70 and 120 minutes post-caffeine.* Increased alertness and contentment at 70 and 120 minutes post-caffeine as well as reduced fatigue.*3
Effects of Low Doses of Caffeine on Cognitive Performance and Mood
Double-blind within-subjects design controlled with a placebo and five different caffeine doses; 23 adults both males and females with varying level of habitual caffeine intake (aged 18-56 years).
Results: Caffeine improved reaction times, noticeable 45 minutes after consumption, especially in high caffeine consumers.* All doses were equally effective to improve performance for high caffeine consumers, no effect on low caffeine consumers.* Increased energy was observed, especially with 100 mg caffeine.* Caffeine consumption prevented boredom.* There was no significant effect on tension, relaxation, headache, or overall mood.*4
References:
- Foxe JJ, Morie KP, Laud PJ, Rowson MJ, De Bruin EA, Kelly SP. Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task. Neuropharmacology. 2012;62(7):2320-7.
- Morde A ,Sudhakar K, Rambabu M, Shankar A, Rai D, Pawar K , Acharya M, Bakan M, Nalawade P, Nayakwadi R, Padigaru M. Pharmacokinetic profile of a novel sustained-release caffeine with extended benefits on alertness and mood: A randomized, double-blind, single-dose, active-controlled, crossover study. Current Research in Behavioral Sciences 2 (2021) 100036.
- Wilhelmus M. M, Hay J. L, Zuiker R. G, Okkerse P, Perdrieu C, Sauser J, Beaumont M, Schmitt J, Gerven J. M and Silber B. Y. Effects of a single, oral 60 mg caffeine dose on attention in healthy adult subjects. Journal of Psychopharmacology 2017, Vol. 31(2) 222–232.
- Smit H.J, Rogers P. J. Effects of low doses of caffeine on cognitive performance, mood and thirst in low and higher caffeine consumers. Psychopharmacology (2000) 152:167–173.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
