If you thought dinghy hiking was physically painful, this explanation regarding the science of hiking by Hamilton Sport may explode your brain.
Hiking is perhaps one of the most miserable sensations in sailing. It is absolutely necessary to hike in order to maintain good boat speed. The trade off is that to achieve decent boat speed you must endure a lot of pain.
Over the years I have heard many explanations for this excruciating burning sensation in the legs. I have also heard many training methods to improve hiking endurance. Scattered throughout all this, there have been many inaccurate explanations and absurd suggestions on how to deal with hiking. Hopefully this article will clear up some confusion and give an insight into how our body deals with hiking.
Hiking involves several major muscle groups. Quadriceps, glutes, spinae erectors and abdominal muscles are all heavily involved. We often refer to hiking as an isometric contraction. This is a little inaccurate.
Isometric contraction involves an application of force through the contraction of a muscle which is at a fixed length. In actual fact there are gradual and slight changes to the length of the muscles during hiking making it more quasi-isometric in nature. The process of fatigue however, remains the same.
When we contract our muscles the blood vessels are squeezed and blood flow is restricted. During dynamic contractions there is a relaxation phase during which the blood vessels are released again. This contraction relaxation process actually promotes bloodflow. This is absent in the case of hiking as we rarely have a full relaxation phase.
The restriction of bloodflow forces our muscles to generate energy for contraction through anaerobic means as oxygen is in short supply. The primary anaerobic energy system is called glycolysis. The major by-product of this is lactate.
Normally muscle is activated from its low fatigue, low power type to high fatigue, high power types. These are known as type one…