Mobilization of the Wrist
of the Human
Health Care Reform Issues
Motor Vehicle Accidents
Overview of Motor Vehicle Accidents
Management in Subacute Settings
Road To Recovery Following A Stroke
of Subacute Care
Postural Muscle Pain
Posture And Gait: Kinesiology Application To Motion
Chronic Forward Cervical - Head Posture
Biking Biomechanics and
Automobile Accident/Injury Form
- It takes 32 pounds of muscle to
supply a typical golf swing. When you look for 32 pounds of muscle on
the average human body, you donít find it in the arms or shoulders, but
more in the thighs and hips.
If the clubface is a half-degree less than square
to the ball, the ball can go off course by 20 yards.
The time of contact of the golf club head with the
ball is 0.005 of a second.
Aerobically, golfers walk typically four to six
miles in playing a round of golf.
Golf ranks fifth overall in rate of injuries among
the top twenty sports played.
Back injury is the most common of all golf
injuries, affecting about 50% of all golfers.
Amateur golfers grip their clubs tighter than the
professionals, as much as three times tighter. The professional usually
grips the club at 25 % of maximal force.
In the golf swing, the highest force on the spine
occurs in the low back at the level of the 3rd
The force of a swing can generate a force of 6000
to 7500 Newton on the spine discs, enough force to cause a disc
The odds of a professional golfer sinking a
hole-in-one in a single round are 3708 to 1.
The diameter of a golf ball is 1.68 inches, and the
diameter of the hole is 4.25 inches.
Compared to moderate weather, on a hot day the
drive will travel 3 yards farther.
Compared to moderate weather, on a cold day the
drive will land 2 yards shorter.
Keeping the ball and equipment warm in cold weather
is important in driving distance. Of the two, keeping the ball warm is
more important than the clubs.
Placing dimples on the golf ball allowed increased
driving distances. Compared to a non-dimpled golf ball, similarly hit
balls showed that a dimpled ball traveled a distance of 260 yards
compared to the non-dimpled ball.
Studies have shown that modern drivers have added
10 to 15 yards of distance for professional golfers compared to those
from the early 1990ís, and over 30 yards more than a 1980 vintage
Cavity back iron designs have made it possible to
construct larger-headed irons with expanded sweet spots that weigh less
than the smaller iron designs they replaced. This means that you can
increase your swing speed, and at the same time, improve your accuracy.
Comparing hitting the ball similarly at sea level
and at 5000 feet, such as Denver, would add 10 yards to a ball hit at
this higher altitude.
Most recreational golfer reach a top speed too
soon, as a result, the clubhead actually starts to slow before ball
contact. Optimal results are to reach maximal speed at ball strike.
Should you have any further questions
regarding this article, please direct your questions or comments to "Ask
the Doctor" section.
Copyright © 2004 - 2012 Taras V. Kochno, M.D. All Rights Reserved
Board Certified in
Physical Medicine and Rehabilitation