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How to Exercise
The exercise is divided
into three general categories:
- Aerobic (also
called endurance
- Isometric
(also called strength or resistance)
-
Flexibility
A balanced program should
include all three. (Speed training is also a major category,
but is generally practiced only by competitive athletes.)
Rules
for Any Exercise Method
A few simple rules are
helpful as you develop your own routine.
- Don't eat
two hours before vigorous exercise
-
Drink plenty
of fluids before, during, and after a workout
- Adjust activity
according to the weather and reduce it when fatigued or
ill
- When exercising,
listen to the body's warning symptoms, and consult a physician
if exercise induces chest pain, irregular heartbeat, undue
fatigue, nausea, unexpected breathlessness, or light-headedness
Warm-Up
and Cool-Down Period. Warming up and cooling down
are important parts of any exercise routine. They aid the
body in making the transition from rest to activity and
back again and can help prevent soreness or injury, especially
in older people
- Warm-up exercises should
be practiced for 5 to 10 minutes at the beginning of an
exercise session. Older people need a longer period to warm
up their muscles
- Low-level aerobic exercise
is the best approach, such as walking briskly, swinging
the arms, or jogging in place.
To cool down, one should
walk slowly until the heart rate is 10 to 15 beats above
resting rate. Stopping too suddenly can sharply reduce blood
pressure, is a danger for older people, and may cause muscle
cramping.
- Stretching is appropriate
for the cooling down period, but not for warming up because
it can injure cold muscles
- Particular exercises may
require stretching specific muscles. For example, a jogger
or biker might emphasize stretching the hamstrings, calves,
groin, and quadriceps, while swimmers would focus on the
groin, shoulders, and back
Aerobic
(Endurance) Training Benefits of Aerobic Exercise
Regular aerobic exercise
provides the following benefits:
- Builds endurance
- Keeps the
heart pumping at a steady and elevated rate for an extended
period, boosts HDL (the "good") cholesterol levels, and
helps control blood pressure
- Strengthens
the bones in the spine
- Helps maintain
normal weight
- mprove one's
sense of well being
Types
of Aerobic Exercise
Aerobic exercise is usually
categorized as high or low impact. Examples of each include
the following: Low to moderate impact exercises:
walking, swimming, stair climbing, step classes, rowing,
cross-country skiing.
Nearly anyone in reasonable health can engage in some low
to moderate impact exercise. Some research indicates that
simply walking briskly for three or more hours a week reduces
the risk for coronary heart disease by 65%. Brisk walking
also burns as many calories as jogging for the same distance
and poses less risk for injury to muscle and bone. High impact exercises: running,
dance exercise, tennis, racquetball, squash. High-impact
exercises should be performed no more than every other day
and less for those who are over weight, elderly, out of
condition, or have an injury or other medical problem that
would preclude high-impact.
Aerobic
Regimens
- As little as one hour a
week of aerobic exercises is helpful, but three to four
hours per week are optimal. In general, the following guidelines
are useful for most individuals: For most healthy young
adults, the best approach is a mix of low and higher impact
exercise
- Two weekly workouts will
maintain fitness, but three to five sessions a week is better.
People who are out of shape or elderly should start aerobic
training gradually with five to ten minutes of low-impact
aerobic activity every other day and build toward a goal
of 30 minutes per day, three to four times a week. (For
heart protection, frequency of exercises may be more important
than duration.) Swimming is an ideal exercise for many people
with certain physical limitations, including pregnant women,
individuals with musculoskeletal problems, and those who
suffer from exercise-induced asthma
- People who seek to lose
weight should aim for five to six low impact workouts a
week. One way of gauging the optimal intensity of exercise
is to aim for a "talking pace," which is enough to work
up a sweat and still be able to converse with a friend without
gasping for breath. As fitness increases, the "talking pace"
will become faster and faster.
Shoes
and Clothing
All that's really necessary
for a workout is a good pair of shoes, well-made, well-fitting,
and broken in but not worn down, they should support the
ankle and provide cushioning for impact sports such as running
or aerobic dancing. Airing out the shoes and
feet after exercising reduces chances for skin conditions
such as athlete's foot. Comfort and safety are the
key words for workout clothing, for outdoor nighttime exercise,
a reflective vest and light-colored clothing must be worn.
Bikers, roller bladers, and equestrians should always wear
safety devices such as helmets, wrist guards, and knee and
elbow pads, goggles
are mandatory for indoor racquet sports. For vigorous athletic activities,
such as football, ankle braces may be more effective in
preventing ankle injuries than tape.
Shoes
for Sports
Aerobic
dancing
- Sufficient cushioning to
absorb shock and pressure that is many times greater than
ordinary walking
- Arches that maintain side-to-side
stability, thick upper leather support. Toe-box. Orthotics
may be required for people with ankles that over-turn inward
or outward, soles should allow for twisting and turning.
Cycling
- Rigid support across the
arch to prevent collapse during pedaling. Heel lift. Cross-training
or combo hiking/cycling shoes may be sufficient for casual
bikers
- Toe clips or specially designed
shoe cleats for serious cyclers. In some cases, orthotics
may be needed to control arch and heel and balance forefoot
Running
- Sufficient cushioning to
absorb shock and pressure. Fully bendable at the ball of
the foot. Sufficient traction on sole to prevent slipping.
Consider insole or orthotic with arch support for problem
feet
Tennis
- Allows side-to-side sliding.
Low-traction sole. Snug fitting heel with cushioning. Padded
toe box with adequate depth. Soft-support arch
Walking
Lightweight
- Breathable upper material
(leather or mesh). Wide enough to accommodate ball of the
foot. Firm padded heel counter that does not bite into heel
or touch ankle bone. Low heel close to ground for stability.
Good arch support. Front provides support and flexibility
Aerobic-Exercise
Equipment
- Home aerobic exercise machines
can be adapted to any fitness level and can be used day
or night. Before investing in and bringing home any exercise
machine, however, it is wise to test it out first at a gym.
In addition, initial supervised training when using these
machines can reduce the risk of injury that might occur
with self-instruction. Very inexpensive exercise machines
tend to be flimsy and hard to adjust, but many sturdy machines
are available at moderate prices. The higher-end models
may utilize computers to record calories burned, speed,
and mileage. While their readouts may provide motivation
and gauge the intensity of a workout, however, they are
not always accurate
The following are a few
observations on equipment:
- A simple
jump rope (skipping) improves aerobic endurance for people
who are able to perform high impact exercise. Skipping should
be done on surfaces that have some give to avoid joint injury.
(A good floor mat is important to provide cushioning for
all home exercises)
- For burning
calories, the treadmill has been ranked best, followed by
stair climbers, the rowing machine, cross-country ski machine,
and stationary bicycle
- Elliptical
trainers may be even better than treadmills for elevating
heart rate and increasing calorie expenditure and oxygen
consumption
- Stationary
bikes and stair climbers condition leg muscles. Stationary
bikes are fairly economical and easy to use safely. The
pedals should turn smoothly, the seat height should adjust
easily, and the bike's computer should be able to adjust
intensity. Stair machines offer very intense, low-impact
workouts and may be as effective as running with less chance
of injury
- Rowing and
cross-country ski machines exercise both the upper and lower
body. Isometric (Strength or Resistance)
Training Benefits
of Isometric Exercise
While aerobic exercise
increases endurance and helps the heart, it does not build
upper body strength or tone muscles. Isometric, or strength-training,
exercises provide the following benefits:
- Builds muscle
strength while burning fat
- Helps maintain
bone density
- Improves
digestion
- It appears
to lower LDL (the so-called "bad") cholesterol levels
Isometric exercise is beneficial
for everyone, even people in their 90s. In fact, strength
training assumes even more importance as one ages because
after age 30 everyone undergoes a slow process of muscular
erosion, which can be reduced or even reversed by adding
resistance training to an exercise program. (Please note,
people at risk for cardiovascular disease should not perform
isometric exercises without checking with a physician.)
Strength-Training
Regimens
Strength training involves
intense and short-duration activities, simply adding 10
to 20 minutes of modest strength training two to three times
a week is important for a balanced exercise program. The following are some
guidelines for starting an isometric regimen:
- Strength
training involves repetitions; ie, moving specific muscles
in the same pattern against a resisting force (such as a
weight) for a preset number of times. In the beginning,
most people can start with one set of 12 to 15 repetitions
per muscle group
- They should
choose a weight that is about half of what would require
a maximum effort in one repetition. (In other words, if
it would take maximum effort to do a single repetition with
a 10-pound dumbbell, than the person would start with a
five-pound dumbbell)
- Breathe
slowly and rhythmically: Exhale as the movement begins;
inhale when returning to the starting point
- The first
half of each repetition typically lasts two to three seconds
and the return to the original position last four seconds
An alternative
technique called "super slow" training stretches out one
repetition to a 14 second count. This method places far
more stress on the muscle group, so fewer repetitions are
needed. A full week of recovery is required before repeating
this workout The goal is to initiate
changes in the muscles so that the body continues to burn
calories after the exercise. Some people report dramatic
results from this approach, but scientific verification
of these anecdotes is not available. Joints should be moved rhythmically
through their full range of motion during a repetition and
not locked up, for maximum benefit, one should allow 48
hours between workouts for full muscle recovery.
Strength-Training
Equipment
Unlike aerobic exercise,
strength training almost always requires some equipment.
Strength-training equipment does not, however, have to cost
anything. Any heavy object that can be held in the hand,
such as a plastic bottle filled with sand or water, can
serve as a weight. Many wearable weights are
available to help strengthen and tone the upper body. Dumbbells
(ranging in weight from 1 to 10 pounds) and resistance bands,
for example, are inexpensive, portable, and effective. Ankle
weights strengthen and tone muscles in the lower body. (Such
wearable weights should not be worn during high-impact aerobics
or jumping.) Handgrips strengthen arms
and are good for relieving tension. A pull-up bar can be
mounted in a doorway for chin-ups and pull-ups. More elaborate
and expensive home equipment for working body muscles is
also available, costing from £100 to over £1000.
No one should purchase or use strength-training equipment
without instruction from a professional.
Benefits
of Flexibility Training
Flexibility training uses
stretching exercises for the following benefits:
- Preventing
cramps, stiffness, and injuries
- Allowing
a wider range of motion (ie, the amount of movement a joint
and muscle has)
- Certain flexibility
practices, such as Yoga and Tai Chi, also involve meditation
and breathing techniques that appear to have many health
and mental benefits and may be very suitable and highly
beneficial for many older people and patients with certain
chronic diseases
- Certain stretching
exercises are particularly beneficial for the back. Flexibility
Training Regiments. Authorities now recommend performing
stretching exercises for 10 to 12 minutes at least three
times a week
The following are some general
guidelines:
- When stretching,
exhale and extend the muscles to the point of tension, not
pain, and hold for 20 to 60 seconds (beginners may need
to start with a 5 to 10 second stretch)
- Breath evenly
and constantly while holding the stretch
- Inhale when
returning to a relaxed position. (Holding one's breath defeats
the purpose; it causes muscle contraction and raises blood
pressure.)
It is important when doing
stretches that involve the back to relax the spine, to keep
the lower back flush with the mat, and to work only the
muscles required for changing position, usually the abdomen.
Specific
Tips for Older People and Exercise
Studies continue to show
that it is never too late to start exercising, at any age,
even small improvements in physical fitness and activity
(such as regular walking) can prolong life and independent
living. The following tips for exercising
may be helpful:
- Any older
person should have a complete physical before starting an
exercise program
- Any older
person should have professional instruction in any exercise
program.
- In starting
out, remember the adage "Start low and go slow."
For sedentary, older people
one or more of the following programs may be helpful and
safe: low impact aerobics,
gait training, balance exercises, tai chi, self-paced walking,
and lower extremity resistance training using elastic tubing
or ankle weights. (Even in the nursing home, programs aimed
at improving strength, balance, gait, and flexibility have
significant benefits.)Resistance training is the
only form of exercise that can slow and even reverse the
decline in muscle mass, bone density, and strength that
occurs with aging.
One 2000 study found that men between
the ages of 60 and 75 have the same potential to gain strength
as men in their 20s. The study further noted
improvements in cardiovascular health, cholesterol levels,
and general well being. As little as one day a week of resistance
training improves overall strength and agility. Eventually adding workouts
that involve fast movements may be particularly beneficial
for older people. Flexibility exercises promote
healthy muscle growth and help reduce the stiffness and
loss of balance that accompanies aging, easing these activities.
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