BIOMECHANICAL PERSPECTIVE OF SWIM DIVING
Propulsive Impulses
Propulsive impulse is a force that allows an object to move forward in a positive direction to increase acceleration (Blazevich, 2012). Propulsive impulse can be a main factor in increasing the acceleration of the swimming dive. This can help to create elasticity in the tendons and other physiology measures that can increase in producing greater amounts of propulsive impulses.
Elasticity is created through the tendons in the legs of a swimmer, allowing them to push back and forth off the block producing propulsive impulses. This can allow a swimmer to further accelerate the body when executing the dive.
The greater your hips are extended, the greater the propulsive impulse is. This may allow swimmers to maximise propulsive force. The more propulsive forces that are created the better the swimmer will be at executing the most efficient swim dive. In the pictures below you may notice that in the grab start the swimmers body does not have the base support that the track start does. The track start allows the swimmer to create more motion and force that can be supplied backwards allowing the swimmers to create more elastic energy in the wind up of the dive. This can allow swimmers to produce more force which can be accompanied with greater propulsive impulse expenditure. The base of support on the grab start is lesser than that of the track start as the feet are much closer together. This is due to that fact that it is much harder to produce a greater impulse because of the lack of balance when creating elastic propulsion and there is less distance to apply the force through the legs and less extension from the hips. This overall reduces the propulsive force that is produced in the dive which will ultimately reduce the acceleration and distance when entering the water.
Propulsive impulse is a force that allows an object to move forward in a positive direction to increase acceleration (Blazevich, 2012). Propulsive impulse can be a main factor in increasing the acceleration of the swimming dive. This can help to create elasticity in the tendons and other physiology measures that can increase in producing greater amounts of propulsive impulses.
Elasticity is created through the tendons in the legs of a swimmer, allowing them to push back and forth off the block producing propulsive impulses. This can allow a swimmer to further accelerate the body when executing the dive.
The greater your hips are extended, the greater the propulsive impulse is. This may allow swimmers to maximise propulsive force. The more propulsive forces that are created the better the swimmer will be at executing the most efficient swim dive. In the pictures below you may notice that in the grab start the swimmers body does not have the base support that the track start does. The track start allows the swimmer to create more motion and force that can be supplied backwards allowing the swimmers to create more elastic energy in the wind up of the dive. This can allow swimmers to produce more force which can be accompanied with greater propulsive impulse expenditure. The base of support on the grab start is lesser than that of the track start as the feet are much closer together. This is due to that fact that it is much harder to produce a greater impulse because of the lack of balance when creating elastic propulsion and there is less distance to apply the force through the legs and less extension from the hips. This overall reduces the propulsive force that is produced in the dive which will ultimately reduce the acceleration and distance when entering the water.