You have to add rwd in Current Package Name in admin Desing tab instead of default.
You have to add page.xml inside app/design/frontend/rwd/default/layout/page.xml
.
You have to remove your custom trening directory frontend/rwd/default/trening
and move trening.xml and myproducts.phtml to respectable rwd/layout/
and rwd/template
directories then leave blank inputs in theme admin Desing tab or (better solution) move your trening directory level up to rwd/
directory not rwd/default/
and stay with 'trening' name in admin Design Themes Default input.
Clear cache and check.