midterm Flashcards
aerobic exercise
sustained, rythmical, physical exercise that requires additional effortby the heart and lungs to meet the increased demand of skeletal muscles for oxygen
anaerobic exercise
exercise at an intensity that oxygen is not supplied consistently
high intensity events
2 min or less
back glide
technique for moving through the water in supine position
bobbing
skill of submerging and pushing off from the bottom to return to the surface
body roll
rotating movement of the body around the midline
buoyancy
upward force a fluid exerts on bodies in it
center of mass
the point around which the weight of the body is evenly distributed
cardiovascular endurance
ability of the heart, lungs and circular system to sustain vigorous activity
cardiovascular system
heart and blood vessels, which bring oxygen and nutrients to the body through circulation of blood
catch
stage in a stroke when swimmer first engages the water in a way to start moving
start of the power phase
drag
resistance of water on a body
dynamic inertia
tendency of a body in motion to stay in motion
rotary kick (egg beater)
kicking technique used for treating water
F.I.T. Principle
fitness principle that states that workouts must be sufficient of frequency (F), intensity (I) and duration of time (T) to be effective
flip turn
fast and efficient turn
done in tuck position
freestyle
competetive event
any stroke allowed
often used for front crawl
frictional drag
resistance caused by an object´s surface texture as it moves through a fluid
glide
stage of stroke after power phase
body keeps miving without any effort
hydrodynamics
science that study the motion of fluids and forces on solid bodies in fluids
intensity
how hard you work out when you exercise
law of acceleration
principle by which a body´s speed depends on how much force is applied to it and the direction of that force
law of action and reaction
principle that for every action there is an equal oppoite reaction
law of inertia
principle that a force must be applied to move a body from rest, to stop a moving body, or to change direction of a moving body
law of levers
principle that movement of levers is related to the force applied, the resistance that occurs, the force arm and the resitance arm
overload
fitness principle based on working somewhat harder than normal so that muscles and cardiovascular system must adapt
pike surface dive
technique of moving under water from surface
bending hops and descending head first
legs straight
power phase
phase when arem or leg stroke is moving body in desired direction
prone
on front, face down
recovery
stage of stroke when arm/legs relax and return to starting position
sculling
technique for moving through water or staying horizontal using only the arms and hand
supine
on back, face up
target heart rate
ideal HR range for an individualto maintain during exercise for greatest cardiovascular benefit
trailing arm
arm that rest on the hip in glide phase of the side stroke
also called top arm
treating water
skill using arm and leg movementto stay stationary and vertical with the head out of the water
