Heel Striking
There is still a lot of discussion as to the relative merits of forefoot / heel striking
running actions, but the way we believe that all runners should aim to run with their
forefoot taking the majority of their weight. The heel striking believers will tell you
about some of the great marathon runners who were heel strikers, possibly the most famous
being Alberto Salazar. However, the truth is that the vast majority of elite runners don't
do this.
The reason is two fold
1 - most heel strikers will hit the floor well infront on their centre of gravity and this
is inefficent (Salazar bend forwards a long way to counter this)
2 - when you heel strike most of the work in your action is done with your quadriceps, which
doesn't allow your calves, hamstrings or gluts to work to their full potential.
Pendulum Legs
By this we mean that the athlete doesn't lift their heels up significantly towards their
backsides. This makes decent knee lift very hard and results in a short stride. It also
places of lot of strain on hip flexors and tend to lead to a sitting action with low hips,
which again puts too much of the workload on the quadriceps.
Wasting Energy
Some athletes waste a lot of energy by lifting their bodies up and down, rather than
holding their upper bodies still and moving their legs both up and down as well as forwards
and backwards. Holding your body tall during the running action is important here (to
avoid sinking too much) and good core stability will help with this.