How to Conduct a Functional Threshold Power (FTP) Test

Power meters are becoming the new standard on bicycles today, especially for competitive athletes. They are certainly an expensive investment, but a worthwhile one if you’re serious about training with data.

Powermeter = LOVE!

Powermeter = LOVE (somedays)!

I’ve mentioned on numerous occasions that I have a love/hate relationship with my power meter. Heart rate-based training on the bike is a great training metric, but it can only do so much. I always liken my power meter to a truth-meter because it does not lie about my current bike fitness and riding abilities.

Power meters are extremely effective tools for training and racing. For long-course triathletes, like myself, I find my power meter acts as a governor for my bike leg because I know if I go out too hard, it will only be time until I blow up.

Most triathletes love spending money on new gear, whether we truly need it or not. A lot of triathletes want fancy race wheels because they make our bikes look fast and cool. Race wheels can easily set you back a couple of grand and the same with a power meter. Now if you had to choose between a power meter or race wheels, what do you choose? A power meter should probably be the correct answer and here’s why:

  • A power meter can help you build your engine. Sure, race wheels can shave a few seconds to a few minutes off your time, but an effective and strong engine (aka YOU) can shave even more time off your bike leg!
  • A power meter can help you monitor your efforts over time and keep you working within your correct zone. For example, if it is extremely windy out you will work harder (i.e. push more watts) than if there was no wind. If you have a power meter, you know you are working harder and thus not fight the headwind by pushing a faster pace (i.e. speed) like your competitors sans power meter.
  • A power meter can give you a highly accurate measurement of your bike fitness over a season. A power meter can be used for benchmark testing unlike a lot of heart rate testing that can have multiple variables with results.

There are various metrics that you can measure over a season with a power meter. I won’t get into that today because the terms can be confusing. If you work with a coach or train with a power meter regularly you are probably familiar with the terms such as normalized power, functional threshold power, critical power, etc.

Today I want to discuss Functional Threshold Power (FTP) because it is often used as the main benchmark testing for bike fitness.

Functional Threshold Power can simply be defined as the wattage an athlete can produce and maintain over a 1 hour time period without fatigue. FTP is relative to nearly all cyclists. It is important for an athlete to test their FTP at the beginning of their base training cycle to determine the correct training intensity zones and also to determine the benchmark for the season. Athletes should periodically re-test their FTP to compare against the benchmark test to observe fitness.

 

You might want a Puke Bucket!

You might want a Puke Bucket!

 

FTP Test Protocol:

  1. Warm-up: 20 minutes at endurance pace/easy to moderate pace; 3 x 1 minute fast pedaling (100+rpm) with 1 minute rest between; 5 minutes easy pedaling
  2. Main Set: 5 minutes all-out effort; 10 minutes easy pedaling; 20 minute time-trial
  3. Cool Down: 10-15 minute easy pedaling

Notes:

  • Keep cadence normal (i.e. 90-95rpm) throughout the test
  • Pace yourself during the 20 minute time trial – it helps to break the time into small sections
  • If you are conducting this test outside, try riding up a steady climb or into a headwind

How to Calculate Your FTP:

  1. Download your data. TrainingPeaks is my preferred software program.
  2. Figure out your average power for the 20 minute time trial. In TrainingPeaks you can highlight the 20 minute interval and it will show average power for that time period.
  3. Take your average power number and multiple it by 0.95 for your FTP number.

Note: The reason you multiple your average power number by 0.95 is because you are subtracting 5% from it. A true FTP test would involve an athlete holding their highest average watts for 1 hour, but since most of us cannot focus that long, we shorten the test to 20 minutes. The 20 minutes is a shorter time period, and thus the athlete generally uses more of their anaerobic capacity and this skews the wattage data by about 5% over a 60-minute effort.

Now what? You know your FTP number and now you can use it to calculate your power-based training zones. The zones are below:

  • Active Recovery – Less than 55% of FTP
  • Endurance – 56-75% of FTP
  • Tempo – 76-90% of FTP
  • Lactate Threshold – 91-105% of FTP
  • VO2max – 106-120% of FTP
  • Anaerobic Capacity – 121-150% of FTP
  • Neuromuscular Power – N/A (maximal number of watts you can push for less than 30secs)

Most triathletes will train predominantly in the endurance and tempo zones, but it is important to include the other training zones in your training plan as well. A coach can help you better plan this type of work with your training plan.

It is important to periodically re-test your FTP to see improvements. If you don’t see improvement over time, it’s probably time to change-up your training routine!

~ Happy Training!

Monthly Training Recap: January

Hello bike trainer!

Hello bike trainer!

The first month of 2014 is already done! Whew… time does fly. January 1at marked the official beginning on my Annual Training Plan (ATP), although I really began base training in December. As I mentioned in a few of my posts, I decided to coach myself this year. I decided this for two main reasons: 1) I want to save some money, and 2) I wanted to try new training methods on myself before I “prescribe” them for my athletes. One of the biggest rules of personal training… never have a client do an exercise that you have not tried yourself.

So far things are going well. I had a decent start, but have missed some workouts due to weather and making changes to my schedule because of my teaching schedule. Let’s recap each sport:

SWIM

I only swam once in January. Not a good start in this department! I get a corporate discount to my local YMCA through work and thus decided to wait to begin swimming until my membership at the Y began. My application got held up a bit in the office and thus my membership began two weeks later than I had hoped for. Yes, I could have swum at other pools but I didn’t want to pay the $3-$5 pool fee each time I went. My first swim went well though! I swam once in November since IMLP and that swim was a complete disaster. I really thought I was going to drown; it was that bad. However, I was completely fine and was hitting about 5 seconds slower than my normal 100 yard pace.

BIKE

I spent A LOT of time on my bike and also a spin bike. I taught four spin classes in January and will be teaching at least 7 in February. I include these workouts in my training plan because I am participating in class on a bike. However, I do prioritize my own bike workouts outside of spin class. I generally aim for 3 rides a week, but sometimes only get 2 in depending on Junior League meeting schedules. My main triathlon goal this year is to rebuild my power on the bike and I believe that I am on the right path to do so. I was supposed to complete my first Functional Threshold Power (FTP) test this past Wednesday, but I wasn’t feeling well and thus have decided to postpone it until next week. I have been training on the bike based on HR and feel for the past two months while I regained some cardiovascular fitness and now I plan to transition to power-based training.

RUN

This winter has plain sucked for running! I’ve discussed this numerous times with my Chiropractor as she is training for the Boston Marathon in April. Since I am recovering from yet another hip issue, I decided to be smart about my run training. If the roads are icy and it’s super cold out, then I hit my bike trainer instead. I have gotten in a few quality short runs. I haven’t been cleared for running more than 5 miles at a time, so I’ve been focusing on taking it easy and just running in my endurance zone. My pace is extremely slow! Like 11-12 minute miles! Back in my peak running shape in 2012, I was running in my endurance zone at a 8:45-9:20/mile pace. Urgh! Patience my dear!

STRENGTH TRAINING

I’ve been strength training like a boss! This is the area that I have really excelled in lately, which is good for me because I miss strength training and my hip needs the strength gains. Since I began teaching at Zone 3 Fitness, I have access to all their classes, which are awesome! If you live in the Greater Portland (Maine) region then I highly recommend you check them out. There is a free Seven Day pass on their website HERE!

The Base Training phase is a perfect time to focus on one's weaknesses within the sport of triathlon.

The Base Training phase is a perfect time to focus on one’s weaknesses within the sport of triathlon.

Goals for February:

  • Swim 2-3x a week – My goal is to swim at least once or twice a week during my lunch break if my schedule allows and once or twice a week in the evenings or the weekend. If I can swim a 4th day that would be awesome. My focus is mainly to get comfortable again in the water.
  • Run at least 3x a week and build up my mileage – My main goal here is to do it injury free and thus I need to be careful with building my miles up slowly. My body has already built some leg strength again running, so I know it will come with time. I want to build a solid base here and thus must embrace the idea of slow and steady!
  • Continue with strength training – My body adapts quickly and well to strength training. I find that my body loses weight more quickly when I strength train on a regular schedule and therefore I will include it in my schedule at least twice a week with added specific hip and core focused work as well.
  • Train with power on the bike – After my FTP test I will train using my power zones on the bike to increase my FTP and my bike fitness.
Here is a butt-kicking full body workout for you!

Here is a butt-kicking full body workout for you!

 ~ Happy Training!