Crown Sport Nutrition PRO ST 300 g Pre-Workout Blue Storm Flavour

RRP £25.69
£23.09
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The Crown Sport Nutrition PRO ST 300g pre-workout is a concentrated pre-workout powder of the highest quality with a perfectly balanced composition and scientifically proven by the University of Greenwich to provide all the nutrients needed to power your workouts and competitions both strength and endurance.

Its extraordinary formula consists of:

  • Essential amino acids: necessary and essential for the perfect functioning of working muscles. Pre-workout intakes of these amino acids have been shown to delay fatigue and improve recovery through reduced muscle wasting (Jäger, R. et al., JISSN. 2.017; Hoffman, J.R. el al., IJSNEM. 2.009). Provided in optimal proportion, similar to that of muscle mass.
  • Nitric Oxide (NO) precursors: the exchange between the amino acids Citrulline and Arginine in the presence of oxygen releases a molecule of NO which upon binding to its specific receptors produces vasodilation, this allows a greater supply of blood and therefore oxygen and nutrients to the active muscles, which appears to translate into improved performance (Suzuki, T. et al., JISSN. 2.016).
  • Taurine: among others, has antioxidant, metabolic and ergogenic effects (Galloway, S.D.R. et al., JAP. 2.008). Their intake together with the other ingredients has been shown to improve muscular endurance during exercise (Hoffman, J.R. el al., JCSR. 2.008).
  • Tyrosine: this amino acid improves focus and concentration when combined with caffeine (Zaragoza, J. et al., JISSN. 2.019), which is very important to get the most out of your training or competition.
  • Betaine: this glycine derivative improves performance because, among other effects, it increases the rate of creatine re-synthesis and raises nitric oxide (NO) levels in blood (Trepanowski, J.F. et al., JSCR. 2.011). It also improves total volume loading to fatigue, in addition to improvements in strength and power production (Lee, E.C. et al., JISSN. 2.010).
  • Acetyl-L-carnitine: this acetylated form of L-carnitine has the ability to cross the blood-brain barrier and therefore improves performance on two levels:
  • 1) it improves mitochondrial metabolism because it donates its acetyl group to generate acetyl-CoA (essential in the Krebs cycle for obtaining energy).
  • 2) it exerts a cholinergic effect (it also donates its acetyl group to synthesise acetyl-choline), i.e. it improves cognitive function and concentration (Onofrj, M. et al., ERN. 2.013).
  • Caffeine and Yerba Mate: we have added (in pure form and as Yerba Mate) the most effective ingredient for direct performance enhancement, both in endurance and strength (Grgic, J. et al., BJSM. 2.019), caffeine. In addition to activating the Central Nervous System (CNS), it delays fatigue and optimises the use of cellular fuels (glycogen and fat). But most importantly, it improves muscle contraction (Lopes, J.M. et al., JAP. 1.983), hence its effectiveness especially when fatigue sets in.
Reference: CWN-8437022689739

Quick Overview

Pre-Workout PRO ST is a concentrated pre-workout powder of the highest quality with a perfectly balanced composition; all essential amino acids, caffeine, yerba mate and nitric oxide precursors. Scientifically proven by the University of Greenwich and with a scientific article published in Nutrients, it provides all the nutrients needed to boost your workouts and competitions both strength and endurance.

Quick Overview

Pre-Workout PRO ST is a concentrated pre-workout powder of the highest quality with a perfectly balanced composition; all essential amino acids, caffeine, yerba mate and nitric oxide precursors. Scientifically proven by the University of Greenwich and with a scientific article published in Nutrients, it provides all the nutrients needed to boost your workouts and competitions both strength and endurance.
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Product availability: The majority of our products are in stock in our warehouses, this is stated on the same page as "Product in stock. Delivery within 48 hours". In products with size options, this information will appear when you select the size you want. If we do not have the product in our warehouse, we will inform you of the estimated delivery time. We will keep you updated on this information and work to ensure you receive your order as quickly as possible. When the product is not available we will give you the option to sign up to an alert to let you know when it is back in stock.

Payment method: You can pay by card, paypal or bank transfer. If you choose the last option, you will receive an email with our bank details for you to make the payment. When we have proof of the payment, we will take care of changing the status of your order and start to prepare your items for delivery.

Delivery costs: The majority of our orders come with free delivery. Purchases over 49 euros in Spain have free delivery excluding products such as dumbbells, weights, MTB, BMX, urban, road and electric bikes. We don't deliver to the Canary Islands, Ceuta or Melilla.

Returns: We guarantee 100% satisfaction with your purchase, you have up to 365 days to return it. You can manage this from the "My account" section and request a refund. For safety and/or hygiene reasons we do not accept returns or exchanges of electronic products that have been switched on and/or activated, food and nutrition products, reusable masks and climbing equipment. You have all the details here.

Size changes: For products with size options, you can consult the size guide table in the product details, to help you choose the one that fits you best. If when you receive the order, you need a different size, you can change it free of charge (Spain). If the new size isn't available we will find you an alternative. Here you will find all the steps to follow.

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