Holding load under G-force and sub-50-hertz vibration: what "sled head" really is, what the neck-strength evidence shows, and how to build prevention properly.
Neck load in skeleton does not come from crashes, it comes from holding work: you lie prone, keep your head lifted against G-load and take continuous vibration from the ice — run after run, week after week [4]. Head, neck and back therefore count as the sliding-typical load zones [1].
That is exactly where the phenomenon sliders call "sled head" comes from: not a formal diagnosis, but a well-known pattern of headaches, fogginess and balance problems after many runs, especially on bumpy tracks [2]. The cause is sub-concussive sustained load — impacts below the threshold of a concussion — from vibration and G-forces. Most of that vibration sits below 50 hertz, fewer than 50 shakes per second, and in exactly that range a helmet does not help [2].
That head issues in sliding are real also shows in the injury statistics: at a large sliding track, around 20 percent of all documented injuries were concussions [5].
The one lever entirely in your hands is the musculature that carries your head. How to build it — and what the evidence actually supports — is what follows.
Two things act at once: static holding work (head up in the prone position, under G-load) and vibration from the ice [2][4]. On top of that you steer through shoulder and knee movements, so your shoulder girdle is not passive but working under load [6]. In skeleton your neck does not sprint — it holds for a minute under vibration.
Measure isometric neck strength in flexion, extension and both lateral flexions. In collision sports, isometric neck strength — not neck circumference — is described as a predictor of concussion risk [3]. What matters is less the absolute value than the side-to-side difference and your own development across the season.
Holding work against a band or a partner's hand in all four directions, plus targeted work for the deep neck flexors — the small muscle layer right at the cervical spine that fine-tunes head position. Deliberately without promising numbers: the optimal duration, intensity and frequency of such programmes is not yet scientifically established [3]. What has worked in practice is short, frequent sessions with clean execution rather than rare maximal attempts — that is experience, not evidence.
Because in your riding position you apply pressure to the runners through shoulders and knees [6], an isolated neck block is not enough. Add rowing, scapular control in the prone position and trunk anti-rotation. Train as far as possible in the position you ride in — prone, head lifted, eyes forward [4].
Headaches, fogginess, balance problems or a drop in concentration after runs are the pattern sliders call "sled head" [2]. After each ice day, note three scores from 1 to 5 for head, neck and concentration. If the scores tip over several days, your neck programme is not too small — your run volume is too large.
Be especially honest with yourself here: the evidence for neck training is promising but not conclusive. In rugby studies, strengthening the cervical musculature was associated with a roughly 45 percent lower concussion rate; other systematic reviews found strength gains but no demonstrated reduction in cervical spine injuries; and a more recent meta-analysis reaches no clear association [3]. Those data come from collision sports, not from skeleton — a skeleton-specific prevention study does not exist so far.
For sliding athletes, neck stabilisation is nevertheless explicitly recommended because it can dampen head accelerations [2]. So treat it as a sensible measure with an open effect size, not as a shield. After a concussion, a structured return-to-sport process decides when you come back [1] — and no neck exercise replaces medical clearance.
Train your neck in riding position, not seated. Lie prone on a mat, lift your head into the eye line you take in the channel and hold — first unloaded, later against light band tension from the side. That combination of prone position and lifted head is precisely the skeleton load pattern [4]; mirroring it in training is the most specific stimulus you can create without ice.
A term common in the sliding scene for headaches, fogginess and balance problems after repeated runs, especially on bumpy tracks [2]. It is not a formal diagnosis but a well-known pattern attributed to sub-concussive sustained load from vibration and G-forces [2].
Because you lie prone and must hold your head lifted against G-load continuously while vibration comes up through the ice [4]. Head, neck and back therefore count as the sliding-typical load zones [1], and your shoulder girdle works on top of that, because you steer through shoulders and knees [6].
Against impact injuries yes, against sustained vibration no. Most of the vibration sits below 50 hertz, and in that frequency range a helmet cannot stop the transmission into head and brain [2]. That is why prevention targets neck and trunk stability rather than equipment.
The evidence is mixed. In rugby studies, cervical musculature strengthening was associated with a roughly 45 percent lower concussion rate; other reviews found strength gains without demonstrated injury reduction; and a more recent meta-analysis reaches no clear association [3]. For skeleton there is no dedicated study so far.
There is no evidenced prescription: the optimal duration, intensity and frequency of such programmes is not yet scientifically established [3]. What has worked in practice is short, frequent sessions in all four directions with clean execution, plus holding work in the prone position [4] — that is experience, not a study result.
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