In the short term the things stated above seem to be the accepted practices but don't usually get to the root of the problem. From experience trying to find what is causing the tightness along the IT tract is key. This is usually more easily said than done. More often than not it is an issue with your lower limb e.g ankle and or foot or upper limb and lower back e.g TFL, glute medius/maximus.
Is this the first time you have run at this volume?
Have you changed anything else with your lifestyle? for example have you started driving more or are you running before work instead of after?
Sorry to not help a huge amount and put a spanner in the works but from someone that has suffered from IT issues several times on both legs it is really important to try to understand the what is causing it.
Hope that the things mentioned above are helping too
Weedy- there is no trouble with you wearing orthotics as long as you use the same ones in the same shoes on each occasion.
By natural foot strike I was referring to hitting the force plate without changing your stride length. If you were to imagine a hurdler miscueing their approach and having to take several small steps, these would not be "natural" and the forces and movements would therefore be different.
If I am able to receive financial support for the study then I would happily let participants keep their hydration packs.
Thanks Also-ran, as you said 21km isn't too far assuming you're in the right condition.
To make the time pass subjects can listen to music and liquid and fuel would be provided on request.
How far away are you Also-ran?
It is a long treadmill run you're right. I had weighed up both options and in order to collect accurate kinetic data (from force plates either instrumented with in the treadmill or sunk into the indoor running track) it is important for a natural strike to occur. Unfortunately, in attempting to hit a force plate instrumented with in a running track (a rectangle roughly 70cm long and 50cm wide) runners alter their stride and thus the forces recorded are highly inaccurate. The other option would be to run outside and enter the labs to jump on a treadmill for data collection. However, it takes approximately 6 minutes to accomodate to treadmill running, resulting in around 35 minutes being spent on the treadmill in under those circumstances.
I came to the conclusion that the easiest, most valid and reliable method of testing would be the one stated previously.
If you would like more information on my methods and background research I would be more than happy to e-mail it across.
My name is Steve and I'm a mature student studying an MSc. in Sports Biomechanics at Leeds Met Uni. Having just received approval for my disseration:
Effects of hydration pack carriage and fatigue on kinetics and kinematics during a 21 kilometre treadmill run
The study is comparing two different designs of pack, both with different loading locations.
I am now looking to recruit 6-10 subjects to take part.
In brief we are looking for both female and male runners that are covering 25miles a week (whether its a fast or slow is not important). The time commitment would be approximately 3 x 2 hour sessions in the labaratory based on the Headingly Campus of Leeds Met Uni spread over a minimum of 3 weeks.
We would also require the subjects to run a small percentage of their weekly mileage wearing the packs prior to their first testing session.
In return for your time, you would be provided with access to the results, a full expert gait analysis and the experience of helping with this original research that has never been conducted before.
If you have any questions then please don't hesitate to contact me at
firstname.lastname@example.org or through RunnersWorld
Thank you for taking the time to read my request and I look forward to hearing from the Runners World community soon.