80:20 Revisted

With the forthcoming release of Dr Kelly Starrett’s new book, I have been reconsidering the advice we tend to offer injured (or preferably non injured) athletes. Dr Starrett (a Phd physical therapist) offers practical and applicable advice on injury prevention and recovery, stating that if you cannot perform basic functions safely (squatting, stretching etc) then you need to sort them out before you try running.

These days, with web access virtually ubiquitous in the western world, there is a surfeit of information available at our fingertips. The difficulty is in discerning what works and what doesn’t. With the rise of athletic “biohackers”, who promote tips and tricks for small percentage improvements, finding the signal amongst the noise is even harder.

For most of us, performance improvement comes down to three simple things.

  • Optimise Nutriton / Diet
  • Train efficiently
  • Recovery / Sleep

Dr Starrett covers much of this in his excellent book Becoming A Supple Leopard and reviews indicate he will cover this in the running guide.

Breaking down the above bullet points, optimising diet means ensuring you eat cleanly and sensibly most of the time, getting a suitable balance of proteins, fats and carbohydrates, with plenty of micronutrients. Nothing clever or fancy but by not doing this, you are ensuring that your body is not going to operate effectively. This is the base upon which all the others stand, mentally and physically.

The part we all think about is the training aspect. We plan, prepare and put in the hours and miles to attempt to achieve our goals. But are we doing it in the most efficient manner? Could we save time by cutting out junk miles or hours in the gym, since more is not always better. Is there such a thing as a recovery run, or easy workout? Would that time be better spent with friends and family, which might help improve our mental state, or doing mobility work (as described by Dr Starrett)?

This ties in to point 3, recovery and sleep. Do you recover enough? Are you waking refreshed and ready to go each morning without needing an alarm or two? There is no set formula for this since the factors involved in recovery are complex, including external stressors, but by tracking basic biomarkers (resting heart rate, blood pressure, oxygen saturation (SpO2) etc) and personal reflection, we are able to observe how our bodies are responding to the load we place upon them. If your resting heart rate is elevated and your SpO2 depressed then you are simply not recovering from the load. Another simple test is to attempt to create a change in your heart rate during a training session. If during a run or ride, you cannot easily elevate your heart rate by increasing pace or effort, then there is a possibility that you are neurologically as well as physically tired and as such, backing off would be advised.

Some people are beginning to use heart rate variability (HRV) to track their stress and recovery. Like many tools, this gives a view into the workings of the body, in this case the autonomic nervous system, which can be used to explore the effect training or stress is having. Many researchers and doctors have shown that there is a link between low variability and mortality from a number of causes but these are measured using ECG over a long period of time (24 hours), especially after an acute myocardial infarction. Some work is being carried out with regards to the use of HRV to track physiological changes due to stress and training and although this appears to be useful over long term measurements, such that trends can be visible, it appears to be a back up to the other measurements and as such, outside of the 80% rule of most efficient use of resources.

To conclude, eat to meet your nutritional needs, train efficiently and recover effectively. Then start making the 20% changes.