The science behind FightZone Running
FightZone Running is an iOS treadmill training app for combat-sport athletes. It turns any treadmill into fight-camp conditioning, with coach-voiced workouts built on real round lengths for MMA, boxing, BJJ and kickboxing, speed and incline set from your own base pace, and four levels from Novice to Championship Fighter. Coming soon to the App Store for iPhone. Pricing to be confirmed.
Every session in the app has a “Why this works” line. These are the main principles, with the studies they come from.
1. Intensity from your own base pace
A short calibration finds your “comfortably steady” pace (about RPE 6/10, short sentences). Every zone from walk to sprint is set relative to it, using RPE and the talk test, which tracks the ventilatory threshold well (Persinger et al., 2004). No heart-rate monitor is needed.
2. Mostly easy, some very hard
Endurance athletes typically spend 75–80% of sessions at low intensity (Seiler, 2010), and polarised training improved VO2max more than threshold-heavy plans in trained athletes (Stöggl & Sperlich, 2014). Fighters' mat and bag work is already hard, so each FightZone week has one hard session plus easy roadwork and a drill or walk.
3. Interval types
Long intervals like the Norwegian 4×4 raised VO2max by 7.2% over 8 weeks (Helgerud et al., 2007). Short intervals of 10–60 s accumulate time near VO2max (Buchheit & Laursen, 2013). Treadmill belts take 5–15 s to change speed, so FightZone keeps flat sprints at 15–20 s or longer and uses incline for very short efforts.
4. Rounds that match the sport
MMA effort-to-pause is about 1:2 to 1:4 (Del Vecchio et al., 2011); kickboxing about 1:1 to 1:3 (Silva et al., 2011). Fight tracks copy each sport's round length and rest.
5. Incline
Each +1% grade adds roughly 4–5% to running cost at typical speeds (ACSM equations; Minetti et al., 2002), so FightZone lowers speed by about 4% per 1% of grade to keep effort right. Short hill reps around 10% improved economy in trained runners (Barnes et al., 2013; Ferley et al., 2013). Uphill running lowers impact forces (Vernillo et al., 2017). A 1% grade best mimics outdoor running (Jones & Doust, 1996).
6. Progression, recovery and taper
One variable changes at a time and hard work grows by no more than 15% a week; load spikes are riskier than steady growth (Gabbett, 2016). Week 4 is lighter; week 8 is a benchmark. Fight Week cuts volume about 40–60% while keeping intensity (Bosquet et al., 2007).
Honest limits
No study has tested treadmill incline training in fighters specifically; the transfer argument is indirect. The speed-versus-grade rule is a model, not measured from our users.
Last updated 2026-10-20. General fitness guidance, not medical advice. Speak to a doctor before starting a new exercise programme and always use the treadmill safety clip.