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| Cause of a condition is unknownOf unknown origin A loss of bowel or bladder control The Iliacus and psoas muscles; deep muscles that cross anterior to the axis of the hip joint and thus are major muscles of the hip Of gradual onset; with respect to symptoms of an injury or disease having no apparent cause Giving way or Subluxation of a joint during functional activity that causes pain and inability to complete the activity Between two bones Connective tissue membrane between bones Chafing of the skin Alternating periods of work with active recovery Within the spinal canal Arising from within the body Oily or medicated substances (e.g., liniments) that are rubbed into the skin to produce a local or systemic effect To turn the foot inward; inner border of the foot liftsThe movement of the plantar aspect of the Calcaneus toward the midline of the body Average force times the duration of application of the force; causes and thus is equal to change in linear momentum; measured in units of force times units of time or expressed as Newton-seconds in SI; a vector quantity An applied force that reaches a relatively high magnitude in a short time The property of an object to resist changes in its motion Toward or closer to the feet; caudal Rate of change in velocity measured at an instant in time rather than over a duration of time; expressed as units of length per unit of time squared or as meters per second per second in SI; a vector quantity The rate of change of angular displacement measured at an instant in time rather than over a duration of time with direction of rotation indicated; measured in units of angular displacement divided by units of time or expressed as radians per second, degrees per second, or revolutions per second; a vector quantity Rate of change in distance traveled measured at an instant in time rather than over a duration of time; expressed as units of length per unit of time or as meters per second in SI; a scalar quantity; a car’s speedometer measures instantaneous speed The rate of change of displacement measured at an instant in time rather than over a duration of time; expressed as units of length per unit of time or as meters per second in SI; a vector quantity A force that acts within the object or system whose motion is being investigated; forces between the molecules of an object that hold the object together Starting from anatomical position, shoulder or hip joint actions that occur around longitudinal axes through these joints and cause limb movements in the transverse plane such that the knees turn inward toward each other or the palms of the hands turn toward the body; opposite of external rotation; also referred to as medial rotation or inward rotation Nerve cell that transmits impulses between neurons; also referred to as connector neuron Sensory receptor that respond to stimuli from sources within the body The cartilaginous disk found between the bodies of adjacent vertebrae Factors related to injury and to an individual’s ability to cope with imposed mechanical stress; they include anthropometrics, skeletal alignment, fitness, and previous history of injury Starting from anatomical position, the joint action that occurs around an AP axis through the ankle when the medial side of the sole of the foot is lifted; the opposite of eversion A device that quantitatively measures muscular function through a preset speed of movement Accommodating and variable resistance Muscular activity that occurs when a muscle develops tension and its points of attachment do not move relative to each other; muscular activity that occurs when a muscle develops tension and does zero work; also referred to as isometric action or isometric activity Contracts the muscle statically without changing its length Shortens and lengthens the muscle through a complete range of motion Material properties are the same in all directions for an isotropic material |
| Idiopathic Incontinence Iliopsoas Insidious Instability Interosseous Interosseous membrane Intertrigo Interval training Intrathecal Intrinsic Inunctions Inversion of the foot Impulse Impulsive load Inertia Inferior Instantaneous acceleration Instantaneous angular velocity Instantaneous speed Instantaneous velocity Internal force Internal rotation Interneuron Interoceptor Intervertebral disk Intrinsic factors Inversion Isokinetic dynamometer Isokinetic muscle resistance Isometric contraction Isometric exercise Isotonic exercise Isotropic |