Building and quality
To get the most from the ‘building phase’ you need to have a plan. It’s not just about doing more steady-state base training; you have to do more quality work as well. Ed Burke’s annual training volumes record the monthly distance covered in November, December and January at 400, 800 and 1,000km per month respectively(2). The distances covered in the months February to April are 1,400, 1,600 and 1,800km. While this is more than most cyclists ride per ‘quarter’, it is illustrative nonetheless. The quality aspect can be demonstrated in racing cyclists; for example, a study on riders with oxygen uptake (VO2max) figures of around 70mls/kg/min showed steadily increasing VO2max from mid-winter to summer(5).
To perform quality work, you need a way to measure effort and the heart rate monitor (HRM) is the ideal tool. Although there are sophisticated power-measuring systems for bicycles (eg SRM, Polar, PowerTap, Ergmo and others), less information is readily available about how to get the best out of these high-tech systems for maximum fitness gains . More importantly, HRMs can be purchased for relatively little, whereas power-measuring systems can be extremely expensive. I use a simple 3-zone system based on heart rates to approximate three zones of effort and reward using research from various sports(6-8):
Zone 1 (Z1) – this is endurance work from 60 to 80% of maximum heart rate (HRmax). The perception of effort is low to moderate and it can be continued for several hours. This is known as ‘low lactate training’ because there is minimal lactate production. Fat supplies around 10 to 40% of energy requirements and carbohydrate is being used at low to moderate levels. The stress from this type of training is low. Low lactate training builds aerobic fitness allowing more work to be done over time, provides enough stress to develop the aerobic system and is what the fastest endurance athletes do most of. Day-to-day recovery is rapid and it’s also enjoyable.
Zone 2 (Z2) – sometimes called no man’s land, this zone is just above 80% HRmax but is not hard enough to be a real quality session (>85% HRmax). As such it’s too hard for easy endurance and too easy for hard intervals. This is sometimes called the ‘lactate accommodation area’; the extra effort above 80% HRmax (perhaps above 75% HRmax for those with low fitness) means more carbohydrate is being used. More importantly, lactate is increasing, as is the stress on the body. Athletes sometimes unwittingly end up here when a steady Z1 session turns into a test of ego, or a ‘race within training’. This can stress the body too much, resulting in fatigue and an inability to do higher quality work in zone 3, or more zone 1 work in the following 12 to 72 hours. Z2 training must be timed carefully and used judiciously by an athlete to achieve specific goals.
Zone 3 (Z3) – this zone is above 85-87% HRmax and is the zone of lactate accumulation. The extra effort requires more carbohydrate, fat use is minimal and the build-up of lactate causes fatigue in a matter of seconds to minutes. If a prescribed effort, such as low zone 3 (85-88% HRmax) begins too strenuously you can make Z3 sessions early on in the plan (late winter and spring) too stressful. Zone 3 is hard enough without going over the top. Intervals, short races, the end of longer events, time trials and VO2max tests all hit this zone. Time here takes out miles from the training bank and wears you down mentally so plan this stuff very, very carefully. Z3 will improve the gains from zone 1 (and training/racing in Z2) by an additional 10-15%. It helps to build power and allows an athlete to deal with lactate more efficiently, making it especially important for short-event athletes (ie events 20-120 minutes).