
Archive for category Notes
Our Motion Capture Lab: The Overview
Posted by Kyle in Motion Analysis, Notes on June 6, 2011
Since the weather’s gotten a bit better, we’ve decided to do our high-speed biomechanical analysis filming outside. Matthew (my research assistant) and I took the equipment outside where we continued progress on our three-dimensional filming model.
Today, we filmed a few different movement patterns:
- Baseball pitching off a mound
- Shot put throw
- Baseball swing off a tee
For those unaware of how it works, we reconstruct our control object of precisely known size and put it where we want to capture the motion.
We then chalk the corners of the object, indicating the boundaries of where we can film. After that, we film the cube from the number of high-speed cameras we’ll be using. By doing this, each camera is then calibrated with the specific locations of the cube. The cameras will not move from these positions while the trials are being filmed.
We then film the subject performing whatever motion we want to analyze, using all of our high-speed cameras.
And lastly, we’ll digitize the two-dimensional video files, creating a three-dimensional model from the video files. We then have kinematics we can store in a database for future analysis and a three-dimensional skeletal model we can use for coaching and training purposes for the athlete.
We’ve improved the process a number of times, making setup much quicker. We can deploy the motion capture lab at a mobile site in under an hour, and then film test subjects all day. This makes our lab setup ideal for filming pitchers in competition without being intrusive – no external markers are necessary on the athlete.
Interested? Look into our biomechanical video analysis services, and contact us today.
A Salute to Two Trainees: Jack and Eli
About two years ago, I started training these two guys in the garage of my townhome in North Seattle. All we had were some crappy Costco-style barbells, Weider plates, and an unused power cage that I bought off bodybuilding.com. The place couldn’t have been more than 14 feet wide, 35 feet long, and 8 feet tall, leaving no room for overhead pressing unless you took the barbell outside (which we often did).
Yet we got a lot of our best work done there. Both Jack and Eli were rank novices, and I was restarting a real strength program, so we all made pretty good linear progress doing some basic compound lifting. I had been training Eli for years prior to that point as his pitching coach, and he brought along Jack for the ride.
Occasionally, we’d get outside and play with some new toys. I contracted with a welder on Craigslist and had our weight sled custom-built for us. I bought a pair of EliteFTS Blast Straps, and we used them to pull the sled across the wet grass at the local park. We paired sled push/pull circuits with plate carries to simulate farmer’s walks (I wouldn’t get a pair of real farmer’s walks until over a year later), two-handed swings with plates on an adjustable dumbbell to simulate kettlebells (a recent addition to our facility), and other creative fitness / metabolic conditioning movements.
Strength Development
At the time, I was developing some pretty good strength levels, albeit at a pretty high bodyweight (260 lbs, 6’1″). I was able to deadlift 505 and back squat 455. I had to make a choice: Continue to play baseball, or think about training as a powerlifter/strongman. I eventually decided to drop some weight, maintain as much strength as possible, and play baseball.
Prior to my back and leg injury a few months ago (unrelated to weight lifting; it’s healing up pretty well and is a topic for another blog post), I was 220 pounds with a back squat of at least 405 pounds (it was pretty easy, I would estimate my 1RM at the time to be ~420 lbs), deadlift of 465 pounds, power clean of 225 pounds, and a bench press of 250 pounds. Overall, I was pretty happy with those numbers, even if those bench press and power clean numbers aren’t very good. (I never did like benching.)
Meanwhile, Jack and Eli, despite setbacks (Jack tore his hip flexor running the 60 yard dash during baseball tryouts as a sophomore, Eli would have to cut weight and miss a lot of training days as a wrestler – and he would later suffer a bad concussion, sidelining him for months), continued to build their strength, just like novices do. They put in a lot of hard work, and managed to put up some respectable numbers while working around their issues and athletic seasons. Eli has posted a personal best in the deadlift (his favorite lift) of 425 pounds at a ridiculous bodyweight of 169.5 pounds, while Jack has posted a back squat of 405 pounds, bench press of 255 pounds (likely to be higher now), power clean of 255 pounds, and a power snatch of around 200 pounds at a bodyweight hovering between 230-240 pounds.
Athletic Carryover
Along the way, Eli got his fastball velocity consistently over 80 MPH through weighted ball training (and other velocity development concepts) while simultaneously developing very good bat speed (finishing in the top three in batting average on his varsity baseball team against tough competition), and Jack qualified for KingCo competition in just his first year of throwing the shot and discus with a shot put throw of 43′ 1.25″ and a 116′ 1″ discus throw. He did this despite his high school having no scheduled throwing ring time at the only close facility near us, and I expect him to post some vast improvements on those numbers in 2012.
Jack and Eli were trainees #2 and #1, respectively, and they helped me build the facility we have today in Seattle. We’ve got a long way to go, but without their support and devotion to hard training – which wasn’t always fun – I wouldn’t have been able to sublease my own place and create an affordable and solid place for committed athletes to train.
Thanks, guys.
News, 5/12: We’re Around, We Promise
Driveline Baseball is still around, don’t worry. The lack of updates has been due to a bunch of factors, including the rapidly-approaching birth of my son, Tycho. (July 13th sure is a lot closer than I thought it would be a few months ago…)
Our players are in the short break between HS competition and select baseball, so they’re in the facility working their butts off.
Personally, I’ve been sidelined with a stress fracture in my lumbar spine (which is mostly healed, thankfully) and terrible adhesions in my right leg, which I’m getting ironed out (almost literally). Something to remember: Friction massages intended to break up adhesions and relax your IT band are extremely, extremely painful.
I have a Hardball Times post coming up about Seattle Mariners’ outfielder Michael Saunders’ swing changes from 2010 to 2011 and why he’s struggling at the big-league level right now, so look for that sometime next week. I also have some blog posts for here detailing more about velocity development and more video/pictures of the facility in action.
Thanks for sticking around!
Book Review: Never Let Go (Dan John)
I recently just finished up Dan John’s excellent book, Never Let Go.
Never Let Go is a collection of articles that Dan has written about fat loss, training, philosophy, and life in general. It’s mainly targeted at the intermediate lifter who has a reasonable amount of strength (defined by Dan as a minimum of a bodyweight bench press and double-bodyweight deadlift), but lifters of all types can learn from his wise words. Dan writes in a humorous and light manner, using his personal anecdotes to highlight what he’s learned in the 30+ years he’s been training and coaching, but drives home very basic and important points. One of our favorite sayings around the facility at Driveline Baseball is Dan’s own: “I said it was simple, not easy.”
A great point he hammers home is that fat loss should be a temporary battle and not a year-long war of attrition – people are too likely to fail the long war, and even if they succeed, they’ll see serious atrophy in their strength and power levels. I’ll be following his advice as I head into the summer baseball season: I’ve been taking a training layoff because of a lower back injury, but it feels good enough to start front squatting again and doing intense interval training. The layoff has left me softer and a bit fatter than I’d like to be, so I’ll be spending the next four weeks (28 days) on an all-out war against fat by constricting my diet and getting a lot of Tabata / interval work in.
Go pick up Never Let Go from Amazon today. You’ll be glad you did.










