an exercise and training program in which each session consists of periods of intense exertion alternating with periods of rest or lighter exertion.
a method of athletic training using alternate sprinting and jogging Also called fartlek
athletic training which alternates between two different activities, such as walking and jogging, or between two different rates of speed
[vair-ee-ey-shuh n] /ˌvɛər iˈeɪ ʃən/ noun 1. the act, process, or accident of varying in condition, character, or degree: Prices are subject to variation. 2. an instance of this: There is a variation in the quality of fabrics in this shipment. 3. amount, rate, extent, or degree of change: a temperature variation of 40° in […]
[veyn] /veɪn/ noun 1. one of the system of branching vessels or tubes conveying blood from various parts of the body to the heart. 2. (loosely) any blood vessel. 3. one of the riblike thickenings that form the framework of the wing of an insect. 4. one of the strands or bundles of vascular tissue […]
[in-ter-veen] /ˌɪn tərˈvin/ verb (used without object), intervened, intervening. 1. to come between disputing people, groups, etc.; intercede; mediate. 2. to occur or be between two things. 3. to occur or happen between other events or periods: Nothing important intervened between the meetings. 4. (of things) to occur incidentally so as to modify or hinder: […]
[in-ter-veen-yuh nt] /ˌɪn tərˈvin yənt/ adjective 1. intervening, as in place, time, order, or action. 2. incidental; extraneous. noun 3. a person who intervenes.