I don’t want to lead you astray. I have been on a crazy
adventure the past couple of weeks, but not of the type you
may think. I can only dream about skiing, climbing, hiking and hunting. No, the
adventure that I have been partaking in is called engineering. I am participating
in Dartmouth's gateway engineering class. The only prompt for our group project class
was to "improve the quality of life". After a lot of brainstorming, we decided to
tackle something close to home for me: the correlation between hip strength and
sports injuries. There are many studies showing that there is an optimal ratio between
hip muscles and quad backsquat strength. Looking at the picture below,
there are two flow charts. The one on the left represents most athletes. Training
typically includes dominant muscle training and specific sport training until an injury occurs, then non dominant
muscle training in physical therapy. After the athlete is recovered, non
dominant training is often forgotten. The flowchart on the left is more
sustainable, with non dominant(ND) training intermittently throughout the sports season.
We asked why athletes don't train non dominant
musclest since the correlation with injury is already known? We questioned athletes, trainers and
physical therapists and came up with 4 reasons:
1. Athletes feel "too strong" for ND training
because there are no direct results, ie: it doesn’t make them better at their
sport.
2. Athletes
don’t screen for muscle imbalances throughout the season, only post injury.
3. Athletes
don’t want to ‘waste’ time with coach/athletic trainer, asking how to do ND
training correctly instead of taking advantage of manual therapy/asking how to
get better at sport.
4. ND
training technique is hard to do and if done wrong only enforces bad muscle
patterns.
From these barriers, we came up with goals for our device:
1. A positive biofeedback loop that sets the athlete up, based on their
backsquat strength, to strengthen their hip muscles to the correct ratios, thus
adjusting throughout the year to their strength.
2. Make the device much less technique dependent
than the state of the art.
3. Make
the device not a replacement for PT or athletic trainers, but something that would
allow the athlete to take full advantage of the trainer’s time. If the athlete
has balanced muscles already, the trainer can get straight to manual work.
From there we started designing and building, developing a works-like
prototype! Now just to make it a bit prettier…