I was told by my sons little league coach that throwing a tennis ball will improve arm strength and velocity. In my experience throwing a tennis ball has always caused me personally arm and elbow pain. Almost like I am hyperextending my arm because the ball is so light.
Any thoughts on the matter?
Also there was a study done by
Chiang Liu from Taipei Physical Education College and colleagues worked with a team of 24 junior high baseball players aged 13 to 15.
The researchers assigned half of the players to practice pitching three times per week for ten weeks with a regulation baseball weighing 5 ounces. The other half trained with a lighter, 4.4-ounce ball. Players threw a total of 42 to 66 pitches per week.
They concluded that using a reduced weight ball helped improve velocity and reduce injury.
Thank you in advance
David, My son is 14 and last month while at school during recess he played a game called “Wall Ball” with some of his friends. The game involves throwing a tennis ball as hard as you can against a wall and trying to make other players not catch it before it hits the ground. Shortly after playing the game, he complained of slight elbow discomfort. His orthopaedic doctor diagnosed him with “valgus extension overload” of the elbow. It was nothing serious and it went away after 2 weeks but I guess my point is why risk injury doing anything else other than throwing with a regualtion ball. The falacy of some opinions and studies related to over or under weighted balls is that it concentrates on arm strength as being the factor for producing velocity. I’m not familiar with the study you reference, but if it’s true then why not throw marshmallows? Stick to throwing an old fashion 5 oz. ball from a mound in blocked sets to improve.
what did the study say about throwing regulation ball? ??no improvement, improvement ??or stayed the same.??
If you took a group of kids and had them do an activity for 10 weeks they SHOULD IMPROVE
Their was a group throwing a 4.4 ounce ball and a group throwing a regulation ball.?? The group throwing the 4.4 ounce ball after a month threw the 5 ounce ball about 1-2 mph faster than the group that threw the regulation ball the entire time.
Seems like within the margin of error.
My sons coach said that throwing the tennis??ball hlps with arm speed, strength and stimulates the fast twitch muscle fibers in the arm.??
sounds extremely fishy to me??
This of course makes absolutely no sense.?? Whether you throw light or over-weighted balls, the arm does not produce arm speed.?? Only the trunk can improve arm speed.
In our book The Science and Art of Baseball Pitching Dr. Rushall, my coauthor,?? devoted 16 pages refuting the very poor research on how over-weight and under-weighted balls improved velocity.
I don’t care how much you were able to increase fast twitch fibers in the arm, if it were possible at all,?? there would be no velocity improvement.??
From these assertions it is quite clear that most coaches do not understand how velocity is produced.
If a “couch potato” gets off the couch and practices anything whether it’s throwing, climbing trees, or lifting weights, his velocity would improve just because of general conditioning because?? his body would be able to respond better.
Plus throwing a very light ball with maximum effort could cause injury.
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