Health-Related Physical Fitness and Assessment

A comprehensive vocabulary review of core health-related physical fitness concepts, pre-screening risk stratification, blood pressure assessment, body composition equations, muscular fitness classifications, and flexibility.

Physical Fitness

A set of attributes or characteristics that people have or achieve that relates to the ability to perform physical activity.

Exercise

A subcategory of physical activity that is planned, structured, repetitive, and purposive.

Physical Activity

Any bodily movement produced by skeletal muscles that results in energy expenditure.

Metabolic Equivalent of Task (MET)

A standardized measure of exercise intensity where $1\,\text{MET}$ equals the energy cost at rest, corresponding to an oxygen consumption of $3.5\,\text{ml/kg/min}$.

Light Intensity

An exercise intensity corresponding to $2\text{--}2.9\,\text{METs}$, which produces a slight increase in heart rate.

Moderate Intensity

An exercise intensity corresponding to $3\text{--}5.9\,\text{METs}$, which produces a noticeable increase in heart rate.

Vigorous Intensity

An exercise intensity corresponding to $>6\,\text{METs}$, which produces a substantial increase in heart rate.

Standardization

The practice of ensuring testing conditions are identical across assessments to allow for accurate measurement and limit sources of variability.

Familiarization

The procedure of ensuring the client understands and knows how to execute an exercise or testing protocol prior to evaluation.

Specificity

The principle of tailoring a training program to precisely mimic a specific performance goal, job, or sport by addressing contraction type, movement pattern, limb size, speed, and resistance.

Informed Consent

A formal pre-exercise process explaining the purpose, procedures, risks, benefits, alternatives, participant responsibilities, confidentiality, and the freedom to ask questions or withdraw at any time.

Sudden Cardiac Death

A fatal cardiovascular event in which the heart abruptly and unexpectedly stops beating.

Acute Myocardial Infarction

A medical emergency characterized by the abrupt cessation of blood flow due to a blockage in one or more coronary arteries (commonly known as a heart attack).

Dyspnea

An abnormal or uncomfortable shortness of breath occurring at rest or with mild exertion.

Orthopnea

Trouble breathing or dyspnea that occurs when lying down flat.

Intermittent Claudication

Muscle pain or cramping caused by inadequate blood supply that typically manifests in the legs or ankles during exertion.

Absolute Contraindications

Medical conditions under which exercise testing should not be performed due to severe risks (e.g., unstable angina, acute myocardial infarction, uncontrolled arrhythmias).

Relative Contraindications

Medical conditions that can be superseded if the potential clinical benefits of exercise testing outweigh the risks (e.g., severe resting hypertension, electrolyte abnormalities).

Auscultation

The diagnostic technique of listening to internal sounds of the body, such as blood flow sounds in an artery, using a stethoscope.

Korotkoff Sounds

Vascular sounds heard during blood pressure measurement, where Phase 1 indicates systolic blood pressure, Phase 4 indicates muffling (true diastolic BP), and Phase 5 marks complete disappearance (clinical diastolic BP).

Body Mass Index (BMI)

A weight-to-height ratio calculated as weight in kilograms divided by height in meters squared ($\text{kg/m}^2$).

Sarcopenia

The age-related progressive loss of skeletal muscle mass.

Siri Equation

The formula used to convert measured body density ($D_b$) into body fat percentage: $\%BF = \left(\frac{495}{D_b}\right) - 450$.

Bioelectrical Impedance Analysis (BIA)

A body composition measurement technique that introduces small electrical currents into the body to evaluate impedance, based on the principle that lean tissue conducts electrical current while fat tissue impedes it.

Archimedes' Principle

The physical law stating that a body immersed in a fluid is buoyed up by a force equal to the weight of the fluid it displaces, serving as the basis for hydrostatic weighing.

Isometric Contraction

A static muscle contraction in which muscular force is generated without visible joint movement or change in muscle length.

Concentric Contraction

A dynamic muscle contraction in which the muscle shortens while generating tension.

Eccentric Contraction

A dynamic muscle contraction in which the muscle lengthens while developing tension.

Isotonic Contraction

A dynamic muscle contraction performed against a fixed, constant amount of external resistance.

Isokinetic Contraction

A dynamic muscle contraction performed at a constant angular velocity across the range of motion.

Muscular Strength

The measurement of the maximal force capability of a muscle or muscle group.

Muscular Endurance

The measurement of the ability of a muscle or muscle group to continue performing repeated contractions at a submaximal level.

Repetition Maximum (RM)

The maximum amount of weight lifted through a full range of motion with good form for a specified number of repetitions.

Flexibility

The functional capacity of joints to move through a full range of motion.

Range of Motion (ROM)

The total amount of available motion, or arc of motion, that occurs at a specific anatomical joint.

Exercise Participation

30 Minutes / 3 Days a week/ at least 3 Months / Moderate Intensity