A

AT - Aerobic Threshold

The effort level you can sustain for hours while breathing easily, just before lactate levels rise. It builds endurance.

ATG - Ass to Grass

The squat movement of lowering the body until the glutes almost touch the ground. It requires a significant amount of mobility, flexibility and balance, particularly in the hips, ankles, and knees. Also known as **ATG Split Squat**.

B

BQ - Boston Qualifier

A badge granted to a race that fulfills the requirements to qualify runners to run the prestigious Boston Marathon.   More Info

D

DNF - Did Not Finish

When a runner starts the race, but does not finish.

DNS - Did Not Start

When a runner signs up for a race but doesn't start.

DQ - Disqualified

When a runner gains a competitive advantage by not following the rules of the race.

Drafting

When a runner uses another runner as a barrier to wind and weather to maintain their pace.

F

FKT - Fastest Known Time

The fastest known time to complete a particular course.   More Info

Form

The quality of a runner’s overall posture and gait while running. Good form is associated with fewer injuries and better performance.

G

GTX - GORE-TEX^TM

Waterproof technology that helps your feet to stay dry and comfortable in wet conditions. Shoes branded with GTX are great for rainy runs or puddle-filled trails.   More Info

GTS - GuideRails^TM Technology System

Two pieces of firmer foam placed on either side of the heel, creating a support system that helps keep excess movement in check. Shoes branded with GTS are support shoes.   More Info

H

HR - Heart Rate

The number of times a heart beats during one minute. It varies according to the intensity of an activity.

HRM - Heart Rate Monitor

A device equipped with a sensor capable of detecting heartbeats.

HIIT - High-Intensity Interval Training

Workout that alternates between short bursts of intense exercise and brief periods of recovery.   More Info

M

MP - Moderate Pace

Pushing the workout effort to a level where your heart rate is high and you are sweating, yet you still feel like you can keep going for longer.

P

PB - Personal Best

The fastest time of a runner in a particular distance or event.

PR - Personal Record

The fastest time of a runner in a particular distance or event.

T

TT - Time Trial

A race that is organized in such a way that participants start at regular intervals and are ranked according to the time taken by each to reach the finish line.   More Info

V

VO2 Max - Maximum Oxygen Uptake

The maximum amount of oxygen your body can use during exercise. By improving your VO2 Max, you can increase your aerobic capacity, and boost your endurance.

W

WOD - Workout Of the Day

Term used in crossfit to label the workout of the day