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Power Crank can improve upstroke pedalling

September 19, 2006 by Jesper Bondo Medhus 3 Comments

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Power CrankIt is challenging to train the hamstrings and hip flexors on a regular bike. Therefore, we use most of our efforts to push the pedals down and never pull the pedals up.

Power Crank offers a different way to train better upstroke pedaling power. The pedal arms on the crank work independently, which forces you to work much harder in the upstroke pedaling phase. Now you are forced to make an active upstroke to keep pedaling. That should make you stronger and more efficient.

I can not recommend the Power Crank yet because I have never tried it or the riders I train. But hopefully, I will try it out in the future.

Better than one leg riding
I have tried to ride my bike with only one pedal clicked in, but I don’t think that works very well. It does not feel like cycling, and it isn’t easy to maintain a reasonable speed. Therefore I am pretty interested in experiences made with the Power Crank system.

So if you have tried it, please let me know about it. Otherwise, we will have to wait until I have tried it and made a review of the Power Crank.

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About Jesper Bondo Medhus

I am a medical doctor with a special interest in cycling training. I work at the Hospital of Vejle using clinical physiology and nuclear medicine to diagnose cancer and heart patients. I have written two e-books: Time Effective Cycling Training and 12-Week Winter Training Program.

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Comments

  1. Lars Ejaas says

    January 31, 2007 at 5:13 pm

    Hej Jesper

    Jeg har et sæt Powercranks som jeg har monteret fast pÃ¥ min vintercykel. Jeg er rigtigt glad for dem! De giver selvfølgelig et rundt trÃ¥d, og jeg vil give dig ret – det er MEGET mere effektivt end at lave øvelser med et ben ad gangen. Desværre har de ogsÃ¥ nogle svagheder – der sidder et leje i hver side som godt kan ødelægges hvis man træder med et MEGET højt moment (dvs. stÃ¥ende start i et højt gear). Det er lidt svært at komme igang nÃ¥r man har holdt stille i et lyskryds – specielt fordi man klikker i pedalen nÃ¥r den er “i bund”. Jeg laver ogsÃ¥ spurttræning med dem for tiden – men den stÃ¥ende teknik er ikke helt pÃ¥ plads endnu – jeg kan endnu ikke fÃ¥ kadancen over ca. 110 stÃ¥ende.

    Jeg vil mene at det kræver at man træner udelukkende pÃ¥ Powercranks i en periode i starten for at lære teknikken – men jeg har lige trænet uden PC’s i 3 uger pga. et ødelagt leje – og der var ikke de store problemer i dag som var min første tur tilbage pÃ¥ Powercranks, selvom jeg kørte lang udholdenhedstræning.

  2. Jesper Therkildsen says

    January 31, 2007 at 5:52 pm

    Thanks for your comments Lars.

    and for those who can’t read danish here is a short summary of Lars’ comments:

    – It is much better than regular one-leg cycling. Very happy for the Power Cranks.

    – Some problems with bearrings if you train power sprints. Also difficult to get the bike started because you click in the pedal in the bottom (that is the weakest point of the pedal stroke).

    – It takes time to learn the technique.

  3. Greg Taylor says

    February 1, 2011 at 8:15 pm

    Two years exclusive PC use in training and triathlon racing including Ironman distance events. Consistently measure 7 to 10 % greater power output as measured with a PowerTap. Highest sustained efforts when using a slight delay in the recovering or upstroke leg! A bit of a gallop in the stroke with cadence about 80. Hamstrings, gluteal muscles and vastus lateralus come into play much more.

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