Sagittal Plane
A sagittal plane is a vertical anatomical plane dividing the body into left and right portions. The midsagittal plane divides them equally.
Definition
A sagittal plane is an imaginary vertical plane that divides the body into left and right portions. Only the midsagittal, or median, plane divides them into equal halves; other sagittal planes run parallel to it. Flexion and extension are commonly described in the sagittal plane. Ankle dorsiflexion and plantar flexion are further examples.
OpenStax · Anatomical planes · OpenStax · Body movements
Movement and HYROX® context
Running, squatting, lunging, jumping, pushing and pulling include substantial forward-backward joint motion, but human movement is three-dimensional. The current HYROX® rules define eight runs and eight stations without classifying every station by anatomical plane or establishing one plane as the sole basis of performance. SkiErg, rowing, carries and wall balls also involve multiple joints and planes.
HYROX® Singles Rulebook 2026/27 · OpenStax · Anatomical planes
Training evidence
Squats, deadlifts, lunges, presses and rows may be useful when they match an athlete’s intended adaptation. The plane label alone does not prove direct transfer to a station or running, and station results do not directly measure “sagittal-plane capacity.” The reviewed sources do not support a universal 70/20/10 training split, twice-weekly multiplanar rule, guaranteed injury prevention, or the claim that sagittal-only training necessarily causes knee valgus, pelvic drop or trunk rotation. Exercise selection, range, load and volume should be individualized.
ACSM · 2026 resistance-training guidelines · HYROX® Singles Rulebook 2026/27
Related terms
The sagittal plane is one of the standard anatomical references alongside the frontal plane and transverse plane. Flexion usually decreases a joint angle and extension increases it.
OpenStax · Anatomical planes · OpenStax · Body movements
Use Repz to track overall station performance, which directly reflects your sagittal-plane capacity.
FAQ
Is the sagittal plane the most important plane for HYROX®?
Many race movements include prominent forward-backward components, but the current rules do not rank anatomical planes and the tasks remain three-dimensional. No single plane independently determines race performance.
ACSM · 2026 resistance-training guidelines · HYROX® Singles Rulebook 2026/27
How much sagittal-plane training should a HYROX® athlete do?
No universal 70% share is established. Choose exercises and volume according to the athlete’s goals, current programme, ability, symptoms and recovery.
ACSM · 2026 resistance-training guidelines · HYROX® Singles Rulebook 2026/27
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