Hoka One One Review

I recently got a test pair of Hoka One Ones from the kind folk at Castleberg Outdoors, so was interested to see if they could help with my running at all. I'm generally of the opinion that "if it ain't broke, don't fix it", and currently I am very happy with my combination of Mizuno Wave Inspire road shoes, and Salomon Speedcross trail shoes. However, I had heard such great things about the Hokas (a Mouri word meaning "time to fly") that I decided to give them a go, and have been testing them out over the past 5 weeks.

For anybody that has not yet heard of these shoes, they are somewhat of a hybrid between minimalist shoe design tenets (e.g. a low 4mm heel drop to encourage good running form), combined with a frankly ludicrously thick sole (roughly 2.5 times the size of a normal shoe midsole) to reduce impact stress on the joints for ultra endurance running. Famous runners currently using (and loving) these shoes include Mimi Anderson, Karl Meltzer, and Dave Mackey. They come in three flavours; the Bondi Bs (for road), the Mafates (for trail) and the Combo XTs (for both). I was expecting a pair of the Combo XTs, but due to a mixup in the pre-Christmas rush I ended up being sent a pair of Bondi Bs. However, I figured they should give me a good sense of how the technology works for me.

My first impressions were that they looked a little like a pair of MBTs (Masai Barefoot Technology), which are designed to be unstable and require activation of your core muscles to stay upright. I was also a little worried that they were going to feel like running in platform shoes. However, straight out of the box they felt absolutely fine, with no feeling of imbalance. I was recommended to go up a size from my usual trail shoes, but even these felt a little tight around the midfoot and the toe box. It is possible that I could have gone up another half size, but they were not uncomfortable. They are also surprisingly light given their appearance, and give an odd springy sensation when you walk in them (although I didn't notice this when running).

Is marathon running bad for your heart? Sigh...

I spotted a news story on the BBC News website this morning which claims that Marathon training 'may pose a heart risk'. This story has since caused a bit of a buzz on the interwebs, cropping up in various tabloids and on various discussion forums and blogs. Being a runner and a scientist, this of course piqued my interest. Is this something that I should be concerned about, or is this another case of sensationalism by the media? Take a guess...

First things first. The study in question is a paper published yesterday (6th December 2011) in the European Heart Journal by a group in Belgium entitled  "Exercise-induced right ventricular dysfunction and structural remodelling in endurance athletes". Unfortunately, it requires a subscription, but you can see the abstract here. Being a scientist myself, I have looked over the paper and thought that I would share my thoughts on the implications.

The study measures various aspects of cardiac function for 40 endurance athletes, each a specialist in one of 4 events which are, in order of duration; marathon, endurance triathlon (possibly Olympic length?), alpine cycling, or ultra-triathlon (Ironman distance). Measurements of cardiac function were taken using cardiac magnetic resonance imaging (cMRI) and echocardiograms, as well as analysis of biochemical markers of function such as B-type natriuretic peptide (BNP) and cardiac troponin I (cTnI), both proteins involved with contractions of muscle cells in the heart and hence good predictors of cardiac risk. For each athlete, three measurements were taken; the first was taken as a baseline 2-3 weeks prior to the event, the second was taken within an hour of crossing the finishing line at the event, and the final 'delayed' measurement was taken 6-11 days after the event.

Broadly speaking, they found the following key results: