Dear Raúl

The answer to your question depends on the type of performance measure you are using in your research.  May you detail the methods for data collection?

Kind regards,

By using 3D LTD hi speed cameras.

Four cameras mounted on a tripod in each corner. The player must attach a contrasting point (balls ping- pong ball ) at the level of the third lumbar vertebra. Count rate can be made in the program Tracker. This program is free.

https://www.cabrillo.edu/~dbrown/tracker/

Biomechanics Research Topics

http://www.ljmu.ac.uk/sps/126095.htm

Two basic things besides the usual analysis noted above Raul.

Shoes.  I played when younger.  Had gotten new shoes to play in.  For a few weeks everyone was beating me or us when I played doubles.    Took a while to figure it out but I was having difficulty recovering from movements to my right.   played barefoot and immediately started winning.  Threw those shoes away and got others.

Funny thing is, one of the younger guys saw me throw the shoes out (almost brand new) and asked if he could use them.    He was usually better than me.  Took one game for me to figure out where I had to put the bird so he could not recover in those shoes.

--

Biomechanics.    Check MeningealRelease.com     get the body structure corrected and people both move and recover more quickly.   Athletes all over the world are discovering this method.   Funny thing is they will not tell others -- an edge is an edge and they will not give it away.

Hi Raul, As suggested by Hashim & Tikhon, it's an issue of Biomechanics or at least kinematic analysis.....3D high Speed Four to Six cameras along with the Motion Analysis Software would be hefty amount of investment....If you have those it's fine, but if not...you need to find out other relevant ways...

1. You can try with few Photocell Cameras, put in diagonal directions (or with the usual course of movements), which would enable you to calculate movement speed;

2. You can also try with few cheaper Reaction & Movement timers (attached with flat foot-pads on the court, and as the player leaves from his/her first place....RT starts and as s/he reaches the next (steps on the other foot-pads) .....enables you to get the movement time...and so on....

It's just a handy solution suggested....can think of a better plan based on whatever is suggested by others...

Keep it up....

Hi Pedro Tiago. I have no special matherial and I need the easiest (yet). Maybe with a camera and photocells could be done?

Thanks for your help

Raúl

Hi Hashem Adnan and Tikhon Zamotin. I'm sure that 3D method and High Speed Cameras could be the Gold Standard but I need some portable and easy way to do it because I'm going travel to the championships and I can not do it in the lab. One camera and Tracker could be an option. I'm going to test it before.

Thank you very much

Raúl

Thanks Jesse Jutkowitz for your link and experience. I will check it.

Kind regards

Raúl

Hi Soumendra Saha. Do you know any cheaper reaction movement timer to attach on the shoe?

Thanks

Raúl

Hi Raul, As far as I remember, Lafayette Instrument Corporation had a system (way back in 2005, when I met them in NASPSPA Conference in Florida). That system works with simple videography. From the videography of any reaction-movement, reaction-movement time could be analyzed by employing simple markers attached to any body part, which could be identified by a cheaper software (it was only USD 840 then), that enables the researcher to obtain info. w.r.t the RT & MT of the players.   

Thank for you quick help Soumendra.

Hi Raul,

In addition to using such cameras, one can also utilize an accelerometer together with the tracker to measure speed and change in direction.

You can then also download and use the simple free software of Kinovea to see the analysis that you want.

Hope this helps.

Regards,

Habib

Hi Habib. As the transport of the Qualisys cameras is not easy, Kinovea was my easier and cheaper option but I recognize accelerometer is more attractive. Do you know if I could work with a validate accelerometer on a band, belt, shoe or similar?.

Thank's for your help,

Raúl

Dear everyone,

FInally I going to use a new accelerometer recently validated. Easy use and hold on.

Thanks for you help

MinimaxX GPS device has a built-in accelerometer, gyroscope and magnetometer... All you have to do is to simultaneously attach it with Polar HR monitor.