What is considered a good FTP based on my age and weight?
12-14-23, 07:44 AM
#51
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Zombie thread, but I'll answer anyways: because no one cares about watts only. What matters is W/KG. Rule of thumb is that the bigger you are, the stronger you are (unless you are fat). The W/KG measure compensates for this bias.
12-14-23, 08:25 AM
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you just described me lol. My FTP is 250 as measured by my powertap but I weigh 235 lbs. I was 190 when covid hit and could never be my weight under control when I recovered.
12-14-23, 09:24 AM
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W/kg are good for performance comparisons between riders, but watts are the tool for training because they're a straightforward, easy, output metric. Using W/kg for training is kind of silly, not only because of the need for extra math, but you also sacrifice accuaracy in the output assessment...unless you extend the math to account for hundredths. For example, one doesn't necessarily need a huge jump in output to improve a segment time (or win) and even a 5w increase can net a PB or indicate training is working. So say a 75kg rider boosts their segment average to 217w vs. 210w, those are both 2.8w/kg. It doesn't seem like much, but plug that into a performance calculator and you'll see you could be looking at 8.44mins saved over a 30km, windless, flat course.
12-14-23, 09:44 AM
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Not exactly...
W/kg are good for performance comparisons between riders, but watts are the tool for training because they're a straightforward, easy, output metric. Using W/kg for training is kind of silly, not only because of the need for extra math, but you also sacrifice accuaracy in the output assessment...unless you extend the math to account for hundredths. For example, one doesn't necessarily need a huge jump in output to improve a segment time (or win) and even a 5w increase can net a PB or indicate training is working. So say a 75kg rider boosts their segment average to 217w vs. 210w, those are both 2.8w/kg. It doesn't seem like much, but plug that into a performance calculator and you'll see you could be looking at 8.44mins saved over a 30km, windless, flat course.
W/kg are good for performance comparisons between riders, but watts are the tool for training because they're a straightforward, easy, output metric. Using W/kg for training is kind of silly, not only because of the need for extra math, but you also sacrifice accuaracy in the output assessment...unless you extend the math to account for hundredths. For example, one doesn't necessarily need a huge jump in output to improve a segment time (or win) and even a 5w increase can net a PB or indicate training is working. So say a 75kg rider boosts their segment average to 217w vs. 210w, those are both 2.8w/kg. It doesn't seem like much, but plug that into a performance calculator and you'll see you could be looking at 8.44mins saved over a 30km, windless, flat course.
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