Maximal oxygen consumption (VO2 max) is often considered the gold standard for measuring an athlete's aerobic fitness, particularly in endurance sports like cycling. However, directly measuring VO2 max requires expensive lab equipment and specialised knowledge. That's where a study on a five-minute power-based test comes into play. It's a simple way to estimate your max oxygen consumption, accessible for cyclists who have access to a power meter.
Test Protocol: Simple Yet Effective
The five-minute power test is straightforward and can be done on any road bike equipped with a power meter. Here’s how you can perform the test:
Warm-Up:Â Begin with a 20-minute warm-up, gradually increasing your intensity. Include a few short bursts of higher power to get your body ready for the test.
The Test: After your warm-up, rest for about 5 minutes to ensure you’re fresh. Then, go all-out for five minutes. Push as hard as you can, aiming to maintain the highest average power output possible. This is not a pacing exercise—it's about sustained maximum effort.
Cool Down:Â After the five-minute effort, cool down with 10-15 minutes of easy spinning.
Data Collection:Â Record your average power output (in watts) for the five minutes.
What Do the Results Mean?
The research indicates that this five-minute power test strongly correlates with VO2 max, meaning your average power output over these five minutes can give you a good estimate of your aerobic capacity. Here’s how you can use your results:
Estimating VO2 Max:Â To estimate your VO2 max, use the formula provided in the study:
For example, if you weigh 70 kg and your average power over five minutes is 300 watts, your estimated VO2 max would be:
Tracking Progress:Â Use this test regularly to monitor changes in your aerobic fitness. As you improve your power output in the five-minute test, you can be confident that your VO2 max is likely improving as well.
Setting Training Zones:Â Knowing your VO2 max can also help you more accurately set training zones, particularly your aerobic and anaerobic thresholds.
Using VO2 Max to Establish Training Zones
Once you have your estimated VO2 max, you can use it to establish your training zones. Training zones are ranges of intensity that help you target specific physiological adaptations during your workouts. Here’s how you can set up your zones based on your VO2 max:
Zone 1 (Active Recovery):Â 55-65% of VO2 max
Zone 2 (Endurance):Â 65-75% of VO2 max
Zone 3 (Tempo):Â 75-85% of VO2 max
Zone 4 (Lactate Threshold):Â 85-95% of VO2 max
Zone 5 (VO2 Max):Â 95-105% of VO2 max
Zone 6 (Anaerobic Capacity):Â 105-120% of VO2 max
Example: Applying the Zones
Let’s continue with our earlier example where your estimated VO2 max is 54.2 ml/min/kg, and your average power output for the test was 300 watts.
Calculate Power at VO2 Max: Since the test was done at maximum effort, the average power of 300 watts is approximately your power at VO2 max.
Determine Zones:
Zone 1:Â 55-65% of 300 watts = 165-195 watts
Zone 2:Â 65-75% of 300 watts = 195-225 watts
Zone 3:Â 75-85% of 300 watts = 225-255 watts
Zone 4:Â 85-95% of 300 watts = 255-285 watts
Zone 5:Â 95-105% of 300 watts = 285-315 watts
Zone 6:Â 105-120% of 300 watts = 315-360 watts
With these zones, you can now structure your training to target different energy systems. For example, if you're focusing on endurance, you might spend most of your time in Zone 2. If you're aiming to improve your lactate threshold, Zone 4 workouts will be key.
Takeaways for the Regular Cyclist
Ease of Use:Â Unlike traditional VO2 max tests, which require lab equipment, the five-minute power test only needs a power meter, making it accessible for most cyclists.
Practicality: This test can be done during your regular training sessions. It doesn’t require a lot of time or special conditions, making it easy to incorporate into your routine.
Data-Driven Training:Â The results from this test can help you better understand your fitness level and tailor your training to improve weaknesses and build on strengths.
In conclusion
For cyclists seeking a deeper understanding of their metabolic capabilities, INSCYD testing offers a comprehensive analysis beyond just VO2 max. This advanced testing provides insights into various physiological parameters, including lactate production, carbohydrate and fat utilisation, and recovery rates, helping to fine-tune your training and nutrition strategies. While INSCYD delivers a detailed overview of your metabolic profile, the five-minute power test described in this post can serve as a valuable benchmark between your quarterly INSCYD assessments. By regularly performing the five-minute test, you can track your progress and maintain a consistent gauge of your aerobic fitness, ensuring that you're on the right track between more in-depth evaluations.
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