The other day when I read the thread of FREESTYLE STROKE I found many technique terms of swimming, like catch water, anchor your hand, etc. Or shall I say a lot of swimming physics or principles?
Could someone recommend some onlie free articles about this swimming physics? I am a new swimmer.
Thanks a lot.
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Former Member
Sometimes people don't take simple kinematics into account. For example, raise your arm straight above your head, now try to move your elbow in a straight line down to your hip. Of course simply geometry makes this impossible, your elbow will always follow an arc (relative to your body). Sometimes people make movements not because they are propulsive but because they position a body part for a propulsive movement or because of kinematic constraints as above.
The fact that people can propel themselves with sculling indicates that propulsion can be generated (by angle of attack not airplane wing type foil effects) but the max speed that people can propel themselves by sculling does raise some interesting questions about its usefulness at race speeds. On the otherhand, so many good swimmers talk about "feel for the water" in relation to swimming that one has to wonder if there is something to it, however ambiguous that term may seem.
Sometimes people don't take simple kinematics into account. For example, raise your arm straight above your head, now try to move your elbow in a straight line down to your hip. Of course simply geometry makes this impossible, your elbow will always follow an arc (relative to your body). Sometimes people make movements not because they are propulsive but because they position a body part for a propulsive movement or because of kinematic constraints as above.
The fact that people can propel themselves with sculling indicates that propulsion can be generated (by angle of attack not airplane wing type foil effects) but the max speed that people can propel themselves by sculling does raise some interesting questions about its usefulness at race speeds. On the otherhand, so many good swimmers talk about "feel for the water" in relation to swimming that one has to wonder if there is something to it, however ambiguous that term may seem.
