The basic breathing principle followed is inhalation during the backward bending
postures due to expansion of the chest and exhalation with forward bending postures due to compression of the chest and abdomen.
We find that her supply curve seems to have been backward bending over the relatively high amounts of income she earned for each new episode of her show.
To the extent that the Oprah Supply Curve is backward bending, and to the extent that lessons drawn about Oprah can be applied to other high-income earners who supply unique services, it appears that higher tax rates might expand the quantity of services they supply while also increasing tax revenues.
For a forward bending posture, there is a backward bending
posture which balances it out.
This suggests that wage increases will not be effective in increasing supply of current workers and provides some evidence that aged care occupations have backward bending labour supply curves.
Some of the studies reviewed by Shields have found evidence of a backward bending labour supply function for RNs, pointing to the possibility that for some workers wage increases might lead to reduced labour supply.
This backward bending
characteristic provides scientists with the ability to control light similar to the way they use semiconductors to control electricity.
It should not be performed if there is pain with backward bending
including workers who report themselves under-employed) regression results for men and all the results for women reported in Table 2 represent a labour-supply function which is upward sloping for low wage rates, but backward bending
at higher wages.
The lumbar (lower back) spine is designed for forward and backward bending
and very little rotation occurs.
However, at relatively high wage rates the phenomenon of a backward bending
labor supply occurs, indicating the dominancy of the income effect (see Link and Settle,  who discuss a case of backward bending
supply of married professional nurses).