What does aerobic exercise
mean anyway? When I think of aerobics I
think of all of those frantic classes that I have watched but have never been
tempted to join. I am not particularly
well coordinated plus I hate young instructors shouting about “feeling the
burn” and then there is that loud music.
Generally speaking, anything
that gets the heart going is an aerobic exercise. Aerobic exercise causes the
body to use oxygen and create energy.
Walking, cycling or using a stair stepper will work just as well, for
our purposes, as the wild gyrations of the younger set.
Betsy Nagelsen McCormack
reminds us in Fit Over 40 for Dummies that you can mix and match your aerobic
exercise so that you don’t need to feel guilty if you head into the hills for a
hike instead of going to the gym. She also reminds us that we should be doing
something aerobic 3-5 times a week for 20-60 minutes each time. The trick is elevating your heart rate into a
“training zone” which requires a little concentration. A gentle stroll probably
isn’t going to do the trick unless you are grossly out of shape. There is a mathematical formula for
calculating your heart rate to the nanosecond but generally speaking at age 50
your target range is between 103 and 146, at age 60 it is 95 to 127 and at age
65 it is 92-122.
You can check your pulse the
old fashioned way by counting your pulse rate manually but getting a wrist
watch heart rate monitor is much more fun.
You can also use a handheld pulse meter, which you just hold in your
hand or stick in your pocket. Your goal
is to get your pulse rate into that target range and keep it there for at least
20 minutes.
The AHA recommends moderate
aerobic for those under 65 (such as walking, light jogging or other exercise
for 30 minutes a day), five days a week as one option. The other option is to substitute a more
vigorous form of activity (full-out jogging or something strenuous enough to
cause rapid breathing and a substantial heart rate increase) for 20 min, three
times a week. For folks 65 and over the
parameters are the same except you need to add a strength-training and balance
exercise program to the mix.
Which is better; the more frequent moderate
workouts or the more vigorous workouts?
I kind of like the idea of only committing to three days a week, but
studies actually show that slow and steady is as good or even better in the
long run. Ergo: Moderate exercise, such as walking is just as
good as the more intense workouts.
The bottom line is that if you
want to stay out of a nursing home, the best approach is to stay physically
active and fit.