HYROX® Bible – Page 8
The definitive glossary of HYROX® terminology. Every term, station, concept, and division explained, from race format to training science.
531 terms found
L
Lactate: fuel, blood measurements and exercise
Lactate is a normal product of metabolism and a usable fuel. It is formed under aerobic conditions too, so its presence does not prove that muscles lack oxygen.
Lat Pulldown
Cable machine exercise pulling a wide bar down to the chest, primarily training the latissimus dorsi and building the pulling strength needed for sled and carry events.
Lateral
Lateral is an anatomical directional term meaning toward the side or farther from the body’s midline. Its opposite is medial.
Lateral Shuffle
Quick sideways movement performed in an athletic stance without crossing the feet, training lateral agility and warming up the hips and glutes.
Latissimus Dorsi
The latissimus dorsi is a broad back muscle that contributes to extension, adduction and internal rotation of the upper arm.
Lean Mass
Total body weight minus fat mass - includes muscle, bone, water, and organs. Building lean mass while controlling fat is the ideal HYROX® body composition strategy.
Leg Curl Machine
A leg-curl machine loads knee flexion in a seated, prone or standing setup; hip and ankle position change the exercise condition.
Leg Extension Machine
A leg-extension machine loads knee extension from a seated position; machine geometry, pad position and range affect the task.
Leg Press
A leg press is a machine-based lower-body press in which the feet push a platform or carriage away; design and setup determine the joint path.
Leg Raise
A leg raise lifts one or both legs from a supported position; the version may emphasize hip flexion while the trunk muscles control the pelvis.
Linear Periodization
Linear periodization is a planned progression in which training variables change in a broadly sequential direction across phases; exact loading schemes vary.
Loaded Carry
A loaded carry means moving while supporting an external weight. Farmers carries and suitcase carries are examples; HYROX Singles uses a 200 m kettlebell Farmers Carry.
Lumbar Spine
The lumbar spine is the lower back region consisting of five vertebrae (L1-L5), bearing the most load and requiring stability during lifting.
Lunge Jump
A lunge jump is a plyometric exercise that alternates the legs in the air and lands in a split stance. It is a training option, not a HYROX competition movement.
M
Machine Fly
A machine fly moves the upper arms through horizontal adduction on a guided path; handle and pad design vary by machine.
Machine Row
A machine row is a resistance exercise that pulls machine handles toward the torso; support, handle path and grip depend on the machine.
Machine Shoulder Press
A machine shoulder press is a guided overhead press whose seat, handle path and grip depend on the machine.
Maximum heart rate: estimates, tests and training
Maximum heart rate is the highest heart rate attainable during maximal exercise. It can anchor some training-zone models, but an age formula only estimates it.
Medial
Medial means toward or closer to the body’s midline in the standard anatomical position. It describes location or direction, not one muscle system or training quality.
Metabolic Conditioning
Training designed to improve energy system efficiency. Combines strength and cardio in circuit-style workouts. Also known as MetCon.
Mind-Muscle Connection
The mind-muscle connection is the conscious focus on contracting a specific muscle during exercise, improving muscle activation and training effectiveness.
Mitochondria: function and training adaptation
Mitochondria are cell organelles involved in ATP production and many signalling and metabolic processes; skeletal-muscle mitochondria adapt to repeated exercise.
Mobility
Mobility is task-specific capacity to move through a usable range with the required control; it reflects more than passive joint range alone.
Mobility Work
Exercises and stretches designed to improve joint range of motion and movement quality. Critical for HYROX station performance.
Motor Unit
A motor neuron and all the muscle fibers it controls. Recruiting more motor units increases force production - trained through heavy lifting and explosive HYROX® drills.
Mountain Climber
A mountain climber alternates knee drives from a supported high-plank position; pace and range define the variation.
Muscle Activation
The process of engaging specific muscles to perform a movement. Proper activation ensures the right muscles fire during HYROX® exercises, preventing compensation patterns.
Muscle Memory
Muscle memory is the neuromuscular phenomenon where previously trained movements are relearned faster, due to retained motor patterns and myonuclei in muscle fibers.
Muscular Endurance
Muscular endurance is the task-specific ability of a muscle group to sustain force or repeat contractions over time; the test and load define the result.
Myofascial Release
Self-massage techniques using foam rollers, lacrosse balls, or massage guns to release tension in fascia and muscle tissue. Improves recovery and mobility between HYROX® sessions.
N
Negative Split
Running the second half of a race faster than the first. A pacing strategy that prevents early burnout.
Neuromuscular
The connection between the nervous system and muscles that controls movement quality, coordination, and force production during HYROX® exercises.
Nordic Hamstring Curl
A bodyweight pull exercise used in HYROX training.
O
Obliques
The internal and external oblique muscles on the sides of the torso responsible for rotation, lateral flexion, and anti-rotation. Stabilize the trunk during asymmetric Sandbag Lunges, single-shoulder carries, and rotational forces while running.
One Rep Max
The maximum weight an athlete can lift for a single repetition of an exercise. Used to calculate training percentages. Also known as 1RM.
Overhead Cable Tricep Extension
Cable tricep extension performed overhead, stretching the long head of the triceps under load for full-range isolation.
Overreaching: functional and non-functional
Overreaching is a training-related performance decrease. Whether it is functional depends on the recovery and outcome, not simply on whether a hard block was planned.
Overtraining syndrome: signs and assessment
Overtraining syndrome describes prolonged maladaptation with impaired performance. It requires assessment of the training history and exclusion of other causes; a watch reading cannot diagnose it.
Oxygen debt, oxygen deficit and EPOC
Oxygen debt is a historical recovery term. EPOC describes oxygen consumption remaining above resting levels after exercise without assuming one cause.
P
Pacing Strategy
A pre-planned approach to distributing effort across all 8 running segments and stations to optimize overall time.
Pallof Press
Anti-rotation core exercise where you press a cable or band straight out from the chest and resist the lateral pull, training spinal stability.
Pectorals
The pectoral region includes pectoralis major and pectoralis minor. Pectoralis major moves the humerus; pectoralis minor acts on the scapula.
Pendlay Row
A Pendlay row is a barbell row in which each repetition begins from a stationary bar on the floor.
Periodization
Structuring training into phases (base, build, peak, taper) to optimize performance for a target race date.
Personal Record
A personal record is an athlete’s fastest verified performance for a clearly defined event, division, distance or task under stated conditions.
Pike Push Up
A pike push-up is a bodyweight press with the hips elevated, moving the head toward the floor between or ahead of the hands.
Pistol Squat
A bodyweight squat exercise used in HYROX training.
Plank
Isometric core hold in a straight line from head to heels, supported on the forearms or hands, teaching the trunk to resist sagging and rotation.