As the intensity ramps up, these processes can’t keep up with the energy demand, and the glycolytic system progressively steps in to take up the slack. The aerobic system is way more efficient in terms of how much energy we can get from every molecule of fuel, but it’s a relatively slow process that uses lots of biochemical pathways and enzymes. At lower intensities, the aerobic system dominates because the energy demand is such that the body has time to move and use O2 in exercising muscles. There is no sudden switch between the two, but instead, the exercise intensity dictates the relative contributions of the two systems (as it does also the amount of fat and sugar we’re using in the aerobic system, but that’s another story). It’s the glycolytic and oxidative systems that we’re interested in, and really, at all exercise intensities, we’re using a mixture of both. without the need to use O2, and 3) the Oxidative or aerobic system that turns sugars and fats to energy in the presence of O2. You have a number of energy systems that you use to create power: 1) the Phosphocreatine system (very short-lived and explosive – 15 seconds of energy for sprints only – ignore for now), 2) the Glycolytic system (often known as the anaerobic system), which turns sugar/glucose to energy anaerobically i.e. Here comes the science (skip to the bit on FTP protocols if not interested)… Either way, the key metric for you as a triathlete is your Functional Threshold power (although it’s worth noting that coaches are starting to take a much wider appreciation of a whole spectrum of your power output).įunctional Threshold Power (FTP) used to be the gold standard and it is sort of pretty much is in as much as it represents an intensity at which certain physiological conditions start to kick-in.
Goldencheetah 1 min max for activity software#
Power can be measured either directly by a smart trainer or power meter, or indirectly using speed and cadence sensors linked to some third party training software like Zwift. For me, indoor bike training is a great opportunity to dig deep and develop my power on the bike in the hope I can become a faster rider. Now, then, really is the time to set some concrete goals in order to stay motivated on the bike and come out of this hiatus in a better shape than we started. “With the recent extended Covid-19 measures in place, the move towards indoor bike training is perhaps even more acute. This week Coach David took the time to chat about training with a power meter.
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