Of course that might not apply to trekking and recognising that the UIAA Medical Comission produced their consensus statement confirming that poles are not actually saving energy and do increase cardiovascular workload. This is due to the fairly obvious increased upper body activity.
The Medcom statement cites the original research where reference is made to the perceived reduction in exertion. The benefits in reduction of impact in the lower body were pretty clear.
That paper is here https://www.theuiaa.org/documents/mo..._2008_V1-2.pdf
That's from 2008 but only an update from 1994 but apparently not well known. Coincidentally there's currently a dialogue about increasing knowledge of physiology and anatomy in the professional sphere, this is probably a good example of something of more general interest than trail running or speed hiking.
I did mention above that I use fixed length collapsible poles:
https://uk.raidlight.com/trail-poles...ml#/bat-123_cm
They're a couple of cm longer than I'd set adjustable ones to. For adjustable I'd recommend these:
https://www.komperdell.com/en/poles/...id=174_2459_10
They're surprisingly light, come with summer and winter baskets. You often see them cheap and they have a good adjustment system with one section fixed and the other variable, much less faff.
Yep and there's composition - Carbon fibre can be more expensive on top of that to absorb vibration and that varies depending on the percentage + there are the tips. Comfort of handgrip makes a difference along with the wrist straps.
Overall though, it is quite dependent on what your activity and level is - even for regular outdoor hiking/walking many have both single fixed length & telescopic sticks
http://www.woodworkcenter.com/make-w...walking-stick/
Made it myself, but you can also buy em:
I bet your running shoes have some cushioning too.
So is Leki.
I prefer the non spring as it gives me more stability, so it’s largely a matter of preference. Or perhaps since I’m relying on them to support bad knees.
My current compromise is a pair of rather light folding carbon fiber poles from Black Diamond. The original plastic tips only lasted a season or two, so I bought tungsten replacement tips. The set is light enough that I don't really notice them in my pack, so I carry them up and then get them out for the descent if it seems warranted.
I don't use poles much but have done when hiking in the mountains with a child in a carrier, lunch for five people, an SLR camera and so on (so quite a heavy pack). I have found that going steeply downhill, with the above load, much easier on the arms with poles with shock absorption and poles generally a good idea for support for the knees.
Honestly I prefer to walk or run without poles. I've never done an ultramarathon distance so can't comment on that.
MTB's have shock absorbers for a design reason, they absorb small bumps and keep the wheels in contact with the ground. If this were comparable you'd be saying that (non-shock absorber) poles deflect when you plant them and the hiker loses control in some way. The argument that says they're required in poles is about reducing the impact on the body. That's completely different and I think there's simply not that kind of impact using poles nor I suggest has anyone quantified that there is.
Specifically, Leki claims they're reducing by 40% the impact on the body. Leaving aside how that's measured and the obvious flaws of that then we'd still need to think that this is an actual problem. The UIAA medical commission over a 25 year period hasn't seen this as an issue having reviewed the original research.
I also strongly suspect that the preference for shock absorbing systems is stronger when people are using the straps.
Leki did try this for Nordic poles and it didn't catch on at all.
They are extendable and with clump locks. I got them from MigrosXXX because i dont do online shopping