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    Home » Lactate Threshold Test & Cycling
    Lactate Threshold Test
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    Lactate Threshold Test & Cycling

    Clive HirstBy Clive HirstFebruary 15, 2022Updated:February 15, 2022No Comments4 Mins Read
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    In animals, L-lactate is constantly produced from pyruvate via the enzyme lactate dehydrogenase (LDH) in a process of fermentation during normal metabolism and exercise – pure science. It does not increase in concentration until the rate of lactate production exceeds the rate of lactate removal. Which is commonly referred to as the burn, it’s where your body can not stay above for too long without rapidly reaching exhaustion. The lactate threshold!

    Contents show
    1 SO WHAT IS LACTATE AND WHY DOES IT MATTER TO CYCLISTS?
    2 WHY DO THE LACTATE THRESHOLD TEST?
    3 SO WHAT’S IT LIKE TO DO THE LACTATE THRESHOLD TEST?

    SO WHAT IS LACTATE AND WHY DOES IT MATTER TO CYCLISTS?

    Basically, the threshold, is the exercise intensity at which the blood concentration of lactate and/or lactic acid begins to exponentially increase (the burn). Often expressed as 85% of maximum heart rate or 75% of maximum oxygen intake. When exercising at or below the lactate threshold, any lactate produced by the muscles is removed by the body without it building up. So to be able to raise your lactate threshold level will mean you can ride further or faster or both.

    WHY DO THE LACTATE THRESHOLD TEST?

    This test is of value for any type of competitive or endurance cyclist. The test that Bristol Bike Lab have conceived is based on a ramp test, gaining in power output at each ramp (timed stages of three minutes). It will always start at an agreed watts output and will ramp up from there. How many ramps depends on the rider but, each ramp is going to jump up in power output (25watt increments) until you reach your maximum (to exhaustion and stop the test). This is done using your bike on a Wahoo kickr. The best part of the ramp test is not needing to think about it, each ramp is controlled by Ben, who is the owner and tester of Bristol Bike Lab, on the iPad, all you have to do is suffer! The process of the test could not be more simple for the rider, if not painful towards the end but, hey you know that.

    At each ramp a lactate reading is taken. Ben will take that reading with a device similar to those used by diabetics but is reading your lactate. It basically involves a pin prick to the finger and measure taken on the device to read how much lactate is in your blood. This is measured in mmol/L of lactate – mmol/L is a commonly used unit used in chemistry. These measurements are plotted against the power output to give you a chart that allows Ben to read and interpret how best for you to train to either reach your specific goal or how you can generally improve performance.

    Ben’s background is in mountain biking and coaching athletes who are looking to do well at racing in endurance based mtb races. He has been doing this for many years and works with a lot of high-calibre riders. This background and knowledge have led him to offer the lactate threshold test for road riders as well as mtb riders.

    SO WHAT’S IT LIKE TO DO THE LACTATE THRESHOLD TEST?

    When you arrive Ben will assess you for the test and get you and your bike set-up. He will explain what’s going to happen and what is expected of the test. This kind of test will take around and hour to perform.

    Ben believes that the lactate threshold test is great for road riders, as it’s often about power outputs, and if your need a specific number to reach. To win or get a certain time you’re aiming for then you need to know you can physically produce that number by means of testing, training and re-testing. This test is the best way to achieve your results, no guessing, just testing and hard work.

    Once you’re set-up, the test explained, the work begins. Warming up for 10-15mins at 100watts. At which point your first blood reading is taken, after this at each ramp a sample will be taken. This will be plotted against your power. Alongside this your heart rate is recorded on your own device which Ben will monitor on his desk, you see nothing, just feel the exertion. Once you reach exhaustion the test stops and all the data compiled is analysed by Ben. This is where his years of experience and research pay off. What you get is a concise report on where you need to improve and it’s as simple as that but, what you have is an excellent tool to work with.

    So the guess work has gone, you have a good set of data to work to. Improvement with the required work is guaranteed. This is very valuable to any road rider looking to beat a PB.

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    Clive Hirst
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    Clive Hirst was born and bought up in Frankfort, Kentucky. He was the only child of his parents. He graduated from Kentucky State University and did a major on Microbiology. He is a veteran cyclist and has travelled all across the United States. He is currently working as an assistant professor in a middle eastern College, somewhere in Kurdistan and he still loves cycling when he is not teaching his students.

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