Why Runners Love Nasal Strips (And What the Science Actually Says)

Introduction

Stand near the start line of any major marathon and you'll see them — small strips of tape across runners' noses, sitting alongside GPS watches and compression socks as one of the sport's most recognisable accessories. Nasal strips found their way into distance running in the 1990s and never really left, worn by everyone from elite marathoners to weekend 5k regulars. But do they actually do anything, or is it just a habit that stuck?

The honest answer, backed by the research, is more interesting than a simple yes or no.

What nasal strips physically do

An external nasal strip is a spring-loaded adhesive band that sits across the bridge of the nose and gently pulls the nasal valve — the narrowest point inside the nose — outward. This measurably increases nasal airflow and reduces nasal resistance. That part isn't in dispute; it shows up consistently across the research.

Where the evidence gets mixed

Here's where it gets honest: a 2020 systematic review and meta-analysis covering 19 studies and 168 healthy participants found no statistically significant difference in VO2max, heart rate, or rating of perceived exertion between runners wearing nasal strips and those who weren't. For a healthy runner with no nasal obstruction, a nasal strip alone is unlikely to make you objectively faster.

That's a real finding, and any brand that tells you differently isn't being straight with you.

Where the evidence gets genuinely strong

Here's the mechanism worth understanding: as breathing gets harder during a run, the nasal valve — the narrowest point inside the nose — is pulled inward by the increased negative pressure of a hard inhale, partially collapsing and restricting airflow right when you need it most. This is exactly what an external nasal strip is built to counter, mechanically holding the valve open against that collapse. Studies measuring this effect directly have found nasal strips increase nasal airflow by at least 15% and measurably reduce nasal resistance.

And "no effect on average" isn't the same as "no effect on anyone." Runners with nasal obstruction — a deviated septum, nasal valve compromise, or allergic rhinitis — show a different picture entirely: one study found a nasal dilator produced statistically significant improvements in airflow, nasal resistance, VO2max, and perceived exertion in this group. Another found endurance athletes with nasal valve compromise had significantly reduced aerobic performance compared to runners with normal nasal anatomy — and that a nasal dilator helped close that gap. If you're dealing with congestion, allergy season, or a cold on top of any of that, you're stacking a temporary restriction on top of a structural one, and a strip is solving a real, physical problem either way.

So why do so many runners swear by them?

Some of it is genuine physiology. Some of it is the psychological value of feeling like your airway is more open, which matters in endurance sport. And some of it is a race-day ritual.

The bottom line for runners

If you have a normal, unobstructed nasal airway, don't expect a nasal strip to hand you a faster VO2max, its going to keep your nasal passages open and provide you with the oxygen you need to perform at your best. If you deal with nasal restriction, the case for a strip is genuinely strong.

This article is for general information and isn't a substitute for medical advice.