How Arugula Nitrate Can Improve Endurance Economy and Repeat Efforts
Arugula is a practical nitrate source that can improve oxygen efficiency, blood flow, and repeated sprint performance when timed correctly before training.
If you’ve ever felt “flat” on interval day despite good sleep and a full tank of carbs, dietary nitrate is one of the few nutrition tools that can produce a noticeable performance bump in a single session. In controlled studies, nitrate-rich foods and supplements have improved exercise economy, lowered oxygen cost at a given pace, and helped athletes sustain repeated high-intensity efforts—especially when doses are taken in the right window before training (Jones, 2014; McMahon et al., 2017).
Arugula is a practical way to do this without relying on shots or powders. It’s one of the most nitrate-dense common greens, and it can be built into a real pre-training meal instead of treated like a gimmick. The key is dosing it like a performance aid, not a salad garnish.
Why nitrate matters for performance Dietary nitrate (NO3-) is converted in the body to nitrite and then nitric oxide, a molecule that helps regulate blood flow, muscle efficiency, and contractile function. That matters because nitric oxide can reduce the oxygen cost of submaximal work and improve muscle perfusion during harder efforts (Lundberg et al., 2008; Jones, 2014).
The performance effects are most consistent in endurance exercise and repeated high-intensity work. Research has shown improved time-trial performance, lower VO2 cost at a set workload, and better repeated sprint or intermittent exercise outcomes after nitrate ingestion, though the magnitude varies by training status, dose, and protocol (McMahon et al., 2017; Senefeld et al., 2020). Trained athletes are not “immune” to nitrate, but they often need cleaner timing and an adequate dose to see it.
The practical mechanism is not magic. More nitric oxide means better vasodilation, improved distribution of blood flow, and better matching of oxygen delivery to working muscle. That can reduce the energy cost of a given pace and help you preserve output late in a session.
Why arugula is a useful nitrate source Spinach and beetroot get most of the attention, but arugula is one of the easiest whole-food sources to use consistently. It has a sharp flavor, mixes into meals easily, and can deliver a meaningful nitrate dose without a giant volume of food.
The catch: nitrate content in vegetables is variable. It depends on growing conditions, storage, and preparation. That means you should think in terms of a protocol, not a perfect number. For performance, the target is typically around 5–9 mmol of nitrate, roughly 310–560 mg, taken before exercise (Jonvik et al., 2017; Senefeld et al., 2020). Depending on the arugula source, that may be achievable with a large serving or may require a concentrated supplement or standardized juice if you want a precise dose.
If you use arugula, the goal is a nitrate-rich meal or smoothie that is repeatable. A handful tossed on a sandwich won’t move the needle. A substantial serving paired with a lower-fiber, lower-fat pre-training meal can.
What the research actually shows The strongest evidence supports three outcomes:
1. Improved endurance economy: Nitrate can lower the oxygen cost of submaximal cycling or running, especially during steady-state work (Jones, 2014).
2. Better repeated high-intensity performance: It can help during intermittent efforts, repeated sprints, and sport-like activity where recovering quickly between bursts matters (Senefeld et al., 2020).
3. Blood flow and vascular effects: Nitrate enhances nitric oxide availability, which supports vasodilation and muscle perfusion during exercise (Lundberg et al., 2008).
Dose and timing matter. Peak effects are commonly seen about 2–3 hours after ingestion, which lines up with practical pre-workout timing (Jones, 2014; Jonvik et al., 2017). Ingesting nitrate with antibacterial mouthwash can blunt the effect because oral bacteria are part of the nitrate-to-nitrite conversion pathway (Kapil et al., 2013). That detail matters if you want the full benefit.
Training status also matters. Some well-trained athletes respond less dramatically than recreationally active subjects, but the protocol still has value for hard intervals, long efforts, and competition days (Senefeld et al., 2020). You should test it in training, not discover your tolerance on race day.
How to dose arugula for a real performance effect The simplest way to think about nitrate dosing is this:
- Target: 5–9 mmol nitrate, about 310–560 mg
- Timing: 2–3 hours pre-training or pre-race
- Use cases: tempo runs, long rides, rowing pieces, interval sessions, competition day
For arugula, use a protocol you can repeat:
- Option 1: food-based protocol — eat a large arugula serving 2–3 hours before training, ideally in a smoothie, sandwich, or bowl that keeps fat and fiber modest.
- Option 2: standardized protocol — if you need precision, use a nitrate-tested product or supplement and add arugula as a food base.
A practical pre-workout arugula meal might look like this:
- 2–3 cups arugula blended into a smoothie or eaten in a wrap/sandwich
- 1 banana or 1–2 slices of bread/rice cakes for carbohydrate
- 20–30 g protein if the session is later in the day and you want a more complete meal
- Keep added fats low to moderate so gastric emptying stays fast
For athletes doing longer sessions, pair nitrate with carbohydrate. Nitrate is not a substitute for fuel. It works best when the engine is already supplied with enough carbohydrate to sustain the output you’re trying to improve.
When arugula works best Nitrate tends to be most useful when the session has one of these features:
- Submaximal work lasting 20–90 minutes
- Threshold or tempo running/cycling
- Repeated sprints with short recoveries
- Team-sport sessions with intermittent high-intensity efforts
- Competition days where you need a small but meaningful edge
It is less useful as a stand-alone fix for poor pacing, underfueling, or bad sleep. If you are glycogen-depleted, sleep-deprived, or dehydrated, arugula won’t rescue the session.
In practice, the athlete who notices nitrate most is often the one doing hard but repeatable work: a 5K runner, a cyclist training at threshold, a rower doing intervals, or a hybrid athlete stacking run intervals after lifting.
What can blunt the effect Three common mistakes reduce the payoff:
1) Using mouthwash or strong antiseptics Antibacterial mouthwash can disrupt oral bacteria and reduce nitrate reduction, blunting nitric oxide formation (Kapil et al., 2013). Don’t use mouthwash right before and after the dose if performance is the goal.
2) Taking too little nitrate A few leaves of arugula are not enough. You need a meaningful dose. If you can’t reliably estimate the nitrate content, use a tested beetroot/nitrate product for important sessions and treat arugula as a complementary food source.
3) Bad timing Too early and the effect fades; too late and you miss the peak window. Two to three hours before work is the sweet spot for most athletes (Jonvik et al., 2017).
Who should be cautious Most healthy athletes tolerate dietary nitrate well, but a few groups need caution:
- Athletes with low blood pressure or those prone to lightheadedness
- Anyone taking blood pressure medication or PDE-5 inhibitors
- People with significant gastrointestinal sensitivity to large raw-vegetable servings
If raw arugula causes bloating before running, use it in a lower-fiber format like a smoothie or pair a smaller serving with a tested nitrate source. The goal is performance, not digestive drama.