Post by Glenn Fleisig, Ph.D. on Sept 16, 2006 9:20:18 GMT -6
While this study captured only outdoor data, I believe it discussed the outdoor/indoor comparison: Escamilla RF, Fleisig GS, Zheng N, Barrentine SW, Andrews JR. Kinematic Comparisons of 1996 Olympic Baseball Pitchers. Journal of Sports Sciences, 19:665-676, 2001.
In my opinion the equipment used in an indoor lab tends to be better, while the athlete's performance outdoors (in competition) tends to be better.
Is there a specific issue you are interested in? Are you a researcher considering different methods? Are you a coach looking for specific answers?
I am an Ortho Surgeon, working with a small university. I have discussed with the baseball coach getting his pitchers on film, but at this time the University has only a small motion analysis lab. (not big enough for a full 60' 6"). Options are to move to a bigger indoor facility (difficult), or move camera system outdoors.
Post by Glenn Fleisig, Ph.D. on Sept 17, 2006 9:58:40 GMT -6
Do you also have the option of sending some of the pitchers to an existing pitching biomechanics lab like the one at ASMI? It's not necessarily cheap, but it might be cheaper than reinventing the wheel?
Post by Yungchien "Amiao" Chu on Sept 19, 2006 9:50:35 GMT -6
Bob, there was a number of studies in which the data were collected outdoor. Practically it is not a problem to capture your pitchers' motion outdoor. But I really encourage you to think twice before you make your decision and to consider Dr. Fleisig's suggestion.
Cameras used in outdoor are usually video-based, with lower resolution and sampling rate than the infra-red cameras now widely used in indoor facilities. The quality of video is not really good. You may need to digitize your video manually, even if you put markers on your pitcher's bodies. It is not a pleasant task at all.
Moreover, if you are going to move your equipment outdoor, you will spend lots of time to set everything before you can start your data collection session, especially when you are doing 3-D. You will need to ensure the power supply, to find several places with good view that you can set your cameras (it could be a big problem at some baseball fields), to make sure your cameras cover every joint during pitching, to adjust your camera according to daylight, to calibrate your cameras, etc.
I collected data for my thesis outdoor. I used two days and spent two hours to set up everything before the session of each day. After my first day of data collection, I was really tired and suddenly got a severe fever, which almost made me unable to continue on the next day:(
I am a faculty member at a small private university that has recently invested in an eight camera vicon T-series cameras. I am interested in investigating throwing mechanics and injury prevention. Although we purchased bodybuilder software and visual 3D software, I have minimal experience in developing a baseball throwing model for the entire body. Are you aware of any models that are commercially available or referring me to someone who could be contracted to help develop a model.