Q-angle – The angle between the quadriceps muscle and the patellar tendon, relevant to knee alignment and injury risk.

Quadrant of aims – A planning tool used in sport to balance personal, performance, participation, and physical well-being goals.

Quadriceps – A group of four muscles at the front of the thigh responsible for knee extension.

Quadruped position – A posture on hands and knees used in core and rehabilitation training.

Qualitative analysis – Assessment of performance based on visual observation and subjective judgement.

Qualitative data – Non-numeric data such as video, opinions, or written descriptions in performance analysis.

Qualitative feedback – Descriptive information about performance, often used to guide technical correction.

Qualitative research – Research that gathers non-numeric data, often used in psychology and coaching studies.

Quality assurance – A process ensuring consistent standards in training, coaching, or data collection.

Quality control – The process of monitoring and improving accuracy and reliability in performance and research settings.

Quality of life – A broad concept referring to physical, mental, and social well-being.

Quantifiable – Capable of being measured in numbers, like sprint speed or VO₂ max.

Quantification – Turning observations or performances into measurable, numerical data.

Quantitative analysis – The use of numerical data to analyse sports performance or physiological function.

Quantitative data – Numerical information collected through tools like heart rate monitors or GPS trackers.

Quantitative feedback – Numerical information given to athletes, such as jump height or time splits.

Quantitative research – Scientific investigations that focus on measuring and analysing numerical data.

Quartering – A method of field division in team sports used to analyse positioning and strategy.

Quasi-experiment – A study that resembles an experiment but lacks random assignment, common in sport settings.

Quickness – The ability to react and move quickly, especially in short, sharp movements.

Quick feet drills – Exercises used to improve foot speed and agility in sport.

Quiet eye – The final fixation point before initiating a movement, linked to expert performance.

Quota sampling – A research technique that involves selecting participants with specific characteristics in fixed proportions.

Quotient – The result of a division calculation, often used in biomechanics or stats.

QRS complex – A waveform on an ECG representing ventricular depolarisation.

Q10 effect – The principle that metabolic rate roughly doubles for every 10°C increase in temperature.

Quadriplegia – Paralysis of all four limbs, sometimes discussed in adaptive sport contexts.

Quality of movement – A measure of how efficiently and accurately a skill is performed.

Quad dominance – When the quadriceps are stronger or more active than the glutes or hamstrings, often linked to knee injury risk.

Quick reaction test – A test measuring reaction time to a visual or auditory stimulus.

Quadrant analysis – A coaching tool that categorises performance or tactical outcomes into four key areas.

Qualifying rounds – Preliminary stages of a competition used to filter top performers for finals.

Quadrupedal locomotion – Movement using all four limbs, used in training drills or performance models.

Quota system – A training or competition rule that limits the number of events, reps, or participants.

Questionnaire – A tool for gathering information from participants in research or screening.

Quality vs quantity – A coaching concept that balances skill execution with volume in training.

Quiet standing – A posture test assessing balance and postural control without movement.

Quaternary prevention – Prevention of over-medicalisation or excessive interventions, relevant in athlete health care.

Quarter time – A break between quarters in sports like netball or AFL, used for recovery and strategy.

Quick release – A technical skill in passing sports where the ball is passed with minimal delay.

Quadriceps fatigue – Localised muscle fatigue affecting knee extension and performance in sports like cycling.

Quantised workload – Training loads broken into clear, countable units (e.g. reps, minutes, distance).

Quality repetition – A concept in motor learning that highlights the importance of precision in each repetition.

Quads activation – The intentional recruitment of the quadriceps during warm-up or strength training.

Quadriceps-to-hamstring ratio – A biomechanical ratio used to assess muscle balance and injury risk.

Quick-twitch fibre activation – The recruitment of fast-contracting muscle fibres during explosive efforts.

Quadrant-based fielding – A tactical strategy in field sports that assigns players to zones/quadrants.