Senior Exercise (cont.)
What happens to flexibility as we age?
You guessed it. It decreases. The good news is that some studies, but not all, show improvements in function when
individuals engage in exercise programs that involve stretching exercises.
Unfortunately, the studies on flexibility in the aging population aren't as
complete as they are for studies of strength and endurance, but the studies do
suggest that significant improvements in the range of motion of various joints
(neck, shoulder, elbow, wrist, hip, knee, and ankle) can occur when stretching
exercises are prescribed. It's just that it isn't clear how much flexibility
training older adults should do to maintain good range of motion, function, and
health.
What happens to balance as we age?
Balance decreases as we age, and importantly, falling is a major problem as a result. According to the U.S.
Centers for Disease Control and Prevention (CDC), one of every three Americans
over the age of 65 falls each year, and among individuals 65-84, falls account
for 87% of all fractures and are the second leading cause of spinal cord and
brain injury. The good news is that physical activity can improve balance and
reduce the risk of falling. In one study of 256 older adults (70 to 92 years
of age, average age 77) who did tai chi for six months, there were 52% fewer falls
in the individuals who did tai chi compared to those who didn't, and there were
fewer falls overall among the individuals who did tai chi compared to those who
didn't (28% versus 46%).
In an even more convincing study called a meta-analysis, where researchers combine the results of many studies on
the same subject, it was reported that muscle strengthening and balance
retraining exercises in 1,016 older men and women (ages 65 to 97) reduced the
risk of falls and fall injuries by as much as 35%-45%.
One of the important conclusions of the research is that it's important to
select balance-training exercises that are specific to activities that you do
during the day. For instance, you might want to do balance exercises on one leg
that mimic the act of walking if you are unsteady while you walk (when you walk,
one leg is in the air). Tai chi is excellent for this because it involves slow,
coordinated movements, and particularly so since you lift one leg frequently
while doing it. (Also see the balance exercises at the end of this article.)
Next: What happens to bones as we age? »
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