HYROX Science for Coaches
What the latest HYROX Studies actually mean for Programming & Actionable Plan Toolkit
Build enough strength to meet the task, then build the engine that keeps the athlete racing after the task.
Evidence map: which studies to build around
| Study | What it contributes | Best use in coaching/content | Overreach to avoid |
| Brandt et al., 2025 | First direct HYROX physiology paper. In a simulated Individual Open race, participants spent more time running than at stations; stations produced higher HR, lactate, and RPE spikes. | Use it to explain why HYROX is not 'just strength' once an athlete can handle the event loads, and why running under fatigue is a major separator. | Do not overstate it as proof that strength never matters. The sample was small, recreational, and already capable of the race-standard tasks. |
| Villarroel Lopez et al., 2025 | Athlete-profile paper showing high weekly training volume, frequent doubles, and a large gap in structured recovery habits among HYROX athletes. | Use it to teach that some plateaus are not solved by more intensity. Recovery structure is part of performance coaching. | Do not treat it like a cause-and-effect intervention. It is descriptive, not a randomized trial. |
| Villarroel Lopez & Juarez Santos-Garcia, 2025 | Scoping review of 39 studies across HIFT and hybrid competition contexts. Supports HIFT as a method that can improve aerobic capacity, strength, power, and fatigue tolerance. | Use it to justify mixed-method programming and to explain why hybrid performance needs a systems view, not a false strength-versus-endurance debate. | Do not present it as HYROX-only proof. Most included studies were broader HIFT or CrossFit-type contexts. |
| Smith et al., 2025 | Volume-matched HIFT study comparing EMOM and rounds-for-time. RFT produced greater physiological stress; EMOM was more suitable for technique development and recovery. | Use it to explain session-design differences. Not every hybrid workout should feel like a race simulation. | Do not assume one structure is always better. The best choice depends on the training goal. |
| Gao & Yu, 2023 plus Eddens et al., 2018 | Concurrent training sequence evidence. Strength-before-endurance tends to better preserve lower-body dynamic strength, while VO2max is generally not meaningfully harmed by the order. | Use it to explain why the primary limiter should usually be protected first, especially in mixed-profile athletes. | Do not turn order into dogma. Training history, recovery status, and session spacing still matter. |
| HYROX Sports Science Report / data-science section | Report-level analysis describing race-variance patterns and practical athlete clusters such as Runners, Hybrids, and Powerhouses. | Use it as a coaching language layer for athlete archetypes and race-analysis discussions. | Label it correctly as report/data analysis, not as a peer-reviewed intervention study. |
From Missing Link to Training Bias: What the Current HYROX Science actually means for Coaching
The biggest mistake in HYROX education right now is reducing the sport to a social-media argument: is it a running race or a strength race? The better coaching question is different. Which quality is currently limiting this athlete from expressing performance on race day? The early HYROX literature gives a much clearer answer to that question than most viral posts do. It suggests that once an athlete can handle race-standard tasks competently, the next major separator is usually not extra suffering for its own sake. It is better biasing of running, fatigue management, session design, and recovery.
Start with the first direct physiology paper. Brandt and colleagues studied eleven recreational HYROX athletes in a simulated Individual Open race. Median completion time was 86.5 minutes, with 51.2 minutes spent running and 32.8 minutes spent at the stations. That alone tells coaches something practical: the biggest share of the clock lives in the runs. But the more useful insight is not simply that running takes time. It is that the stations created the sharper physiological spikes. Heart rate, blood lactate, and perceived exertion were all higher during the stations than during the runs, and the highest late-race peaks appeared at wall balls. In other words, HYROX is not a steady endurance event. It is an endurance event punctuated by repeated task-driven spikes that the athlete must recover from quickly enough to run well again.