EVERYTHING in your life affects
your training.
Do you sit at a
computer or are
you on your feet all day? It can be hard to get in a good run at the end of the
day if you have leg fatigue.
Do you sit in rush hour traffic? The stress of dealing with gridlock can not only be mentally straining
but can be physically draining as well.
How
many hours of sleep do you get each night? Your body doesn’t distinguish between fatigue caused by
lack of rest and fatigue from training,
it only knows that fatigue is fatigue.
Do
you have young children at home that require your
time for their activities, whether sports or school? If you are taking
a child to
practice then not only are you on the road and dealing
with traffic but in most instances your eating patterns are
out of balance.
Do
you have a stressful job? Your body also
makes no distinction between the different factors of
stress, it only knows
that stress is stress.
So
how can you monitor your fatigue and stress levels to know when to push
in training and when to back off? The answer is by
listening to your heart. By
knowing what your normal resting heart rate is you
can monitor your Morning Resting
Pulse (MRP) to access your fatigue and stress level and to monitor
your body’s adaptation to training.
We are given certain physical traits and abilities
by genetics from our
parents and we can’t change what they gave us, but we can
condition what we have. I have
trained athletes with big hearts (low MHR) and I have trained athletes with small hearts
(high MHR) the size of the pump determines the stroke volume
and therefore the max heart rate. Knowing what your max
heart rate is and training using Heart Rate Training Zones is the best and most
efficient way to train and get the maximum benefit from
your workouts.
For several
mornings in a row take your pulse before you
get out of bed (when you raise up your heart rate will go up 5 or 6 beats).
Average these numbers and this will be your normal MRP. Finding your max heart
rate is a little more difficult.
The only ACCURATE way to determine
max heart rate is on a maximal
treadmill stress test or a cycling ergomometer. Most of the
original formulas were for people who were not active
and were just starting to exercise.
There was a safety factor built-in. By example the original formula was 220 – your age but that was later revised to 209 minus
70% of age if under 40 and 205 minus 50%
of age if over 40 to be
more accurate for fit
individuals, but even these are not too accurate.
The
most accurate formula in use today is the Karvonen Formula which
takes into account Heart Rate Reserve. The Karvonen
formula takes into account your resting
heart rate in determining what
your workout zones should be. You subtract your
MRP (morning resting pulse) from your MHR (max heart rate) and this is your HRR (heart
rate reserve). Multiply your workout percentage by your HRR then add back your MRP to determine what your Heart Rate needs to be for a particular zone, i.e. 70%, 75%, etc..
By knowing what your heart rates should be for
different workouts will
give you the knowledge to always get maximum benefit from your
workouts. The other advantage is by always checking
your pulse each morning and if you have an elevated heart rate it will tell you what your fatigue
and stress level is and
whether you should do an easier
workout of shorter
distance or less intensity or should
you just take the day off.
See you at the races…
Coach Will