You can see if this suits you.

http://ninapro.hevs.ch/

Maybe you could used this one:

https://archive.ics.uci.edu/ml/datasets/sEMG+for+Basic+Hand+movements

You can see if this suits you.

http://ninapro.hevs.ch/

Try these too.

http://www.nyu.edu/classes/mcdonough/downemg.htm

https://physionet.org/physiobank/database/emgdb/

Thank you guys!

You can see a sample of the data I have at www.sce.carleton.ca/faculty/chan with corresponding Matlab code (under the Matlab Library tab). If you want access to the entire database email me (the paper Myoelectric Control Development Toolbox describes the data; 30 subjects, 4 session/subject, 6 trials/session, 7 motion classes, 7 EMG channels)

A variety of data sets with full description are available in this website

http://www.rami-khushaba.com/electromyogram-emg-repository.html

Thank you all very much!

I appreciate your help!

Happy to provide data (20 subjects, 40 classes). Please contact me for further info.

Thank you!

BiopatRec has a lot of data repository https://github.com/biopatrec/biopatrec/wiki/Data_Repository.md

Dear Kostas!

This one should be fine for your purposes

https://dynamicbrain.neuroinf.jp/modules/xoonips/detail.php?id=EMG101

Kind regards,

Ramona

Hello.

I have collected data for 10 movements under 4 different arm poses, for my master thesis. Despite the fact I only have one subject (myself), I have recorded data during 6 days, to take into account electrode displacement. In total, there are 30 trials per movement, for each arm position.

Happy to share it if needed.