Compression gets sold on a lot of claims. Some hold up, some are marketing. Here is a straight read on what graduated compression does for a Hyrox athlete, and where the evidence is thinner than the advertising.
What does graduated compression actually do?
Graduated compression applies the most pressure at the ankle and progressively less up the leg. That gradient is the point. It supports venous return, which is the job of getting blood back up towards the heart against gravity. Compression measured in mmHg describes that pressure. Our tights sit at 15-20 mmHg, the same medical grade band used clinically for support, and our race socks at 25-30 mmHg.
What the evidence supports reasonably well
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Reduced muscle oscillation. This one is straightforward mechanics. Firm fabric reduces the soft tissue vibration that comes with repeated impact. Over eight 1km runs, less oscillation means less of the low-level muscle damage that accumulates.
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Perceived exertion and soreness. Across the literature, the most consistent finding is that people report feeling better, both during and after. Whether that is mechanical or partly psychological is debated, but for a race where pacing decisions are made on feel, feeling better has practical value.
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Recovery in the days after. The evidence for compression aiding post-exercise recovery and reducing delayed onset muscle soreness is stronger than the evidence for it improving performance during the event.
What the evidence does not support
Compression will not meaningfully improve your VO2 max, your lactate threshold or your finishing time on its own. Studies looking for direct performance gains generally find small or inconsistent effects. Anyone selling you a garment on the promise of a faster time is overreaching.
It is worth saying plainly: we sell compression, and the honest position is that the case for it rests on support, fatigue management and recovery, not on making you quicker.
Why Hyrox is a slightly different case
Most compression research studies runners or cyclists doing one repeated movement. Hyrox is not that. You are switching between running, pushing, pulling, lunging and throwing, for around 90 minutes. Two things follow.
First, garment stability matters more than in pure running. A tight that performs beautifully on a 10K may slide during sandbag lunges. That is a fabric weight and construction question, which is why our compression tights for Hyrox use a 225 GSM knit rather than a lighter summer-weight fabric.
Second, the calves take disproportionate load. Eight runs plus the sled pull plus wall balls concentrates fatigue below the knee, which is the argument for firmer support there specifically. Our compression race socks run at 25-30 mmHg for exactly that reason.
What mmHg should you choose?
For a full-length tight worn through a 90 minute race, 15-20 mmHg is the sensible band. It gives genuine graduated support without restricting movement at the hip and knee. Higher pressures are generally used for recovery wear or medical indications, not for continuous high-output exercise. For calves specifically, 25-30 mmHg is well tolerated because the coverage area is small.
Frequently asked
Will compression make me faster at Hyrox? Almost certainly not on its own. Expect support and reduced soreness, not a personal best.
Should I wear compression during the race or after? Both work, for different reasons. During, for support and reduced oscillation. After, for recovery, which is where the evidence is strongest.
Is more compression better? No. Beyond a point it restricts movement and comfort without adding benefit. Match the pressure to the job.
Browse the full range in our compression collection. Free UK delivery over £50.
Does Compression Help for Hyrox? What the Evidence Says
Compression gets sold on a lot of claims. Some hold up, some are marketing. Here is a straight read on what graduated compression does for a Hyrox athlete, and where the evidence is thinner than the advertising.
What does graduated compression actually do?
Graduated compression applies the most pressure at the ankle and progressively less up the leg. That gradient is the point. It supports venous return, which is the job of getting blood back up towards the heart against gravity. Compression measured in mmHg describes that pressure. Our tights sit at 15-20 mmHg, the same medical grade band used clinically for support, and our race socks at 25-30 mmHg.
What the evidence supports reasonably well
What the evidence does not support
Compression will not meaningfully improve your VO2 max, your lactate threshold or your finishing time on its own. Studies looking for direct performance gains generally find small or inconsistent effects. Anyone selling you a garment on the promise of a faster time is overreaching.
It is worth saying plainly: we sell compression, and the honest position is that the case for it rests on support, fatigue management and recovery, not on making you quicker.
Why Hyrox is a slightly different case
Most compression research studies runners or cyclists doing one repeated movement. Hyrox is not that. You are switching between running, pushing, pulling, lunging and throwing, for around 90 minutes. Two things follow.
First, garment stability matters more than in pure running. A tight that performs beautifully on a 10K may slide during sandbag lunges. That is a fabric weight and construction question, which is why our compression tights for Hyrox use a 225 GSM knit rather than a lighter summer-weight fabric.
Second, the calves take disproportionate load. Eight runs plus the sled pull plus wall balls concentrates fatigue below the knee, which is the argument for firmer support there specifically. Our compression race socks run at 25-30 mmHg for exactly that reason.
What mmHg should you choose?
For a full-length tight worn through a 90 minute race, 15-20 mmHg is the sensible band. It gives genuine graduated support without restricting movement at the hip and knee. Higher pressures are generally used for recovery wear or medical indications, not for continuous high-output exercise. For calves specifically, 25-30 mmHg is well tolerated because the coverage area is small.
Frequently asked
Will compression make me faster at Hyrox? Almost certainly not on its own. Expect support and reduced soreness, not a personal best.
Should I wear compression during the race or after? Both work, for different reasons. During, for support and reduced oscillation. After, for recovery, which is where the evidence is strongest.
Is more compression better? No. Beyond a point it restricts movement and comfort without adding benefit. Match the pressure to the job.
Browse the full range in our compression collection. Free UK delivery over £50.