Update. Went from 172.5 - 165mm and am more impressed than I thought. First thing was less fatigue ( and lactic buildup ). I put this down to less power needed at the top of the stroke. I find that I exert more power at that point but now it seems smoother and more sustainable. 1st ride and was 1second off a long sought 1.40 hard climb PB. That, on the back of being off the bike for a few days after work related fatigue. I’m sold
@podiumphysio657
7 ай бұрын
Hey S.I. That sounds amazing! So my summary would be you are performing a greater percentage of your pedal stroke in a stronger and more effective leg position (nearer to an extended knee). Congratulations on your (almost) PB.
@SIvers-or2ke
7 ай бұрын
Yea mate that sums it up perfectly. I feel smoother and more like how I “ remembered” myself 20 years ago.
@podiumphysio657
7 ай бұрын
@@SIvers-or2ke Turning back the clock!
@stanzapalny2123
8 ай бұрын
I appreciate all the tests, thanks!
@podiumphysio657
8 ай бұрын
You are welcome Stan. Glad you found it beneficial!
@SIvers-or2ke
8 ай бұрын
You’ve got me scouring the net for 160mm Shimano cranks. Best I can find are 165mm and I’m about to grab them. Thank you. I’m 183 ( 6ft ) and 56 y.o now and think, looking into my cycling future, shorter cranks makes alot of sense and gives me quality riding over struggling.
@podiumphysio657
8 ай бұрын
Yes I think I got lucky being on SRAM, and having a local bike shop that is on the ball and able to grab what I needed when they saw it was available. I'm glad to have helped you make a decision and hope it all works out well for you. As for me I'm now recovering from my second bout of COVID, so I wont be making any more max effort cycling videos for a while...
@SIvers-or2ke
8 ай бұрын
Sorry to hear you have Covid again mate. Get some Quecertin into you. Even at this late stage. I’m satisfied with 165mm. If I stumbled across 160’s, I jump on them but happy to only go 7.5 mm shorter than what I use now. Anything is better. Get well soon
@podiumphysio657
8 ай бұрын
@@SIvers-or2ke Cheers. it knocked me around for a few days but not as bad as 2022 when I had it the first time. I think my fitness will take a few weeks to recover. Keen to know how you go with your 165s after you settle into them.
@musclelessfitness2045
8 ай бұрын
If you're 183 tall, maybe 165mm is better for you than 160mm. One mathematical equation I found says crank length = 20% of Inseam ... or 41% of Tibia length, but it's hard to know exactly which one is best.
@garyfunnell6357
8 ай бұрын
Shimano dura ace are available in 160mm
@kostaspapazoglou2851
8 ай бұрын
A very interesting explorative journey! Do I detect any traces of "obsessive behaviour" starting to creep in?! I switched to 160 mm carbon cranks ( from 170 alloy) and have subjectively ( placebo-assisted perhaps ) noticed improvements in every aspect of my riding but, of course, cannot statistically substantiate these. However, I somehow feel better on my bike. Cheers!
@podiumphysio657
8 ай бұрын
Hey Kostas. I've been toying around with youtube since late 2018. I've had a few seemingly random videos that gain some traction and engagement, but it has been very unpredictable. When I published my first video on the topic of shorter cranks at the end of Dec, six weeks ago, nothing much happened for about a week. Then it started to get some views And some comments And people were seemingly really interested in and vocal about the topic And I doubled my subscribers in 6 weeks So yes, I decided to go all in on this subject matter in the short term, and deliver as much content on the benefits of using shorter cranks as possible. When I run out of new "shorter cranks" ideas I'll get rid of the 175s on my Emonda, and move onto 160s on that bike as well. Then I'll move onto other subject material! Glad you are also seeing benefit from your 160s.
@kostaspapazoglou2851
8 ай бұрын
It was more of a "tongue-in-cheek" comment rather than criticism! If anything, I applaud your persistent methodologies and tests and let them end ...whenever they end! @@podiumphysio657
@zazzleman
7 ай бұрын
I finally got mine. Have done a 30k and a 75k. 75k today and windy. Also, for some reason I have been really fatigued for 2 weeks, my HRV has plummeted and my body battery has not recharged above 50%. But anyway, the results from today. I am comparing this to the same 75k ride on Feb 17 when I was at the top of my game. Heart rate both times identical. Shorter cranks gave me 2.1kmh advantage. Avg power increased 22 watts. Actually felt a lot easier. No hip pain. By the way, have not altered the seat height but think I should.
@podiumphysio657
7 ай бұрын
Hi Zazzleman. Sounds like you may be in the same boat as me - with hip issues. So if the shorter cranks help your hips, you have already had the most important win. Any performance gains are a bonus. And sounds like you have achieved a few bonuses also! HRV seems to be an important leading indicator of body stress and illness so keep an eye on this and take care not to overexert if you are not well. In relation to the lower body, yes you should probably raise your saddle, however it might depend on what you can do with the front end of your bike. When I went to shorter cranks on my Tarmac, it was not easy for me to also lift my handlebars, so I only did a partial saddle raise.
@zazzleman
7 ай бұрын
@@podiumphysio657 It's been a brutal month. Family deaths, job loss, stress. But the hrv is starting to climb again and body battery back to 89% over night. #Ipswich100 on Sunday. 🤣🤣
@podiumphysio657
7 ай бұрын
@@zazzleman Wow. So sorry to hear that. Nothing like 100km on the bike to shake up a depleted body battery. Or are you doing the 100 mile ride??
@zazzleman
6 ай бұрын
@@podiumphysio657 Here are the results from Ipswich. See if Tour Brisbane achieves similar - or if it is placebo. Almost pulled out on Sunday morning before the race. Had a terrible night, body battery was only 32% in the morning. Anyway, stuck with the clubbies for 32km and ended up with the fastest 40km in my life. Got dropped and rode the last 68km on my own, was nobody to draft. Ended up with an average of 36 watts better than I have ever done for 100kms. On the Garmin 'Stamina' gauge ended the 100km on 1%. Never been able to drain myself like that before. While I had some DOMS on Monday, it was all gone by Wednesday and did a huge intervals session better than the previous week. The biggest difference is how it makes me feel. I feel more comfortable, and I am enjoying the bike again and cannot wait to get out on the road. All the harsh hip pain is gone.
@matthewblue7839
8 ай бұрын
I understand you are observing differences, but I’m not certain you are proving this power difference. As you say at the end the shorter cranks are better for you, no offence I think because you don’t have the strength to turn over the linger cranks fast enough to hit higher watts numbers. So, that’s a personal characteristic. You mention, you are not a sprinter, so not certain what weight training you may be doing just for power increase. With your hip issues, the physics of shorter cranks make a lot of sense and you do get higher watts, but I think that is because you get higher rpm, your strength/power are constants, if you increased your power you might be able to spin up the longer cranks and hit higher watts. Anyway, I am just commenting on your test methodology and possible variables affecting results. Glad the shorter cranks are working for you!
@podiumphysio657
8 ай бұрын
Hi Matthew. One of the things I remember from Jim Martin's presentation in Germany 6 years ago (kzitem.info/news/bejne/jmmpqZmYh2hkpX4) is that muscular force is greater at slower contraction speeds. That is a universal physiological principal, not just specific to me. I actually have relatively high power (over 1200w output), but this is when I am out of the saddle and working at slower cadence. I do try to do leg weights such as squats and deadlifts, however I need to be careful to work in a shallow range of motion so I dont stir up my joint inflammation. I'd dare to say I'm stronger than most of the guys I ride with, but it is all slow twitch!
@mrfillebojj5731
8 ай бұрын
could the shorter cranks lead to injury because of kneeangle etc. or are the benefits almost general?
@podiumphysio657
8 ай бұрын
I cant imagine what knee angle problems there would be, so long as you had a proper bike fit. The knee is working through a smaller range of motion so there is less to go wrong.
@SIvers-or2ke
8 ай бұрын
Further to that, I heard elsewhere, that if you find yourself pushing off the back of your saddle on the top of the stroke, then shorter cranks are for you. You are replicating that angle, instinctively, by sitting further back. So check your position on the bike when the going gets tough. Hope that helps
@Cookefan59
7 ай бұрын
Whats your leg length and shoe size? Have you had your leg lengths checked for discrepancies?
@podiumphysio657
7 ай бұрын
I havent measured my leg lengths but I've never been told of a LLD in all my years of seeing other health professionals. Shoes are size 12. Why do you ask?
@Cookefan59
7 ай бұрын
@@podiumphysio657 As a sports medicine doc, it’s one of the things I check for because nobody else does. I also check for level hips. Everybody compensates for something and that’s not always a bad thing but if they’re in discomfort I always check these things out.
@thrownblown
2 ай бұрын
Im watching the Olympics sprint semi finals and they just said Hoogland was competing with 145mm and that he set the killo record with them
@podiumphysio657
2 ай бұрын
Which country are watching from? I just checked on our Australian replay and didnt hear them mention that. Kudos to him though if that is the truth. Seems like quite a massive improvement in the kilo WR!
@Martin-on2pp
8 ай бұрын
But what is the effect on your hips???
@podiumphysio657
8 ай бұрын
Hips like the shorter cranks!
@Martin-on2pp
8 ай бұрын
Maybe one video about the impact on your hips/physics?
@podiumphysio657
8 ай бұрын
@@Martin-on2ppHave you seen this earlier video?kzitem.info/news/bejne/ppeL3qece4Vil20
@Martin-on2pp
8 ай бұрын
@@podiumphysio657 I have seen it. The start of it all. But the long term effects....
@podiumphysio657
8 ай бұрын
@@Martin-on2pp I have only had the new cranks for 6 weeks so it is too early to talk about long term effects, however I am expecting less hip pain as shorter cranks prevent me from moving into full hip flexion/ impingement position when riding.
@matthewblue7839
8 ай бұрын
Do you report your cadence too ?
@podiumphysio657
8 ай бұрын
I have the cadence data. For the first 4 tests (2 on the Tarmac and 2 on the Emonda) my cadence was slower relatively, however on the final 4 tests, I did not try to restrict cadence and the RPMs were higher.
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