Table 1.

Questions sample for each of the theory of planned behavior structures

TPB structures	Questions sample
MMH attitude	What do you think about of MMH as expressed?
	1. Totally agree, 2. Agree, 3. No comments, 4. Against, 5. Completely against
Subjective norms in MMH	Most people who are respectful to me (such as parents and spouses) encourage me to MMH in the mentioned way
	1. Totally agree, 2. Agree, 3. No comments, 4. Against, 5. Completely against
Perceived behavioral control in MMH	The weight of the loads I carry is within my power
	1. Totally agree, 2. Agree, 3. No comments, 4. Against, 5. Completely against
Behavioral intention in MMH	I want to act the way I do every time I carry a load.
	1. Totally agree, 2. Agree, 3. No comments, 4. Against, 5. Completely against
Behavior in MMH	The MMH distance is minimal.
	1. Totally agree, 2. Agree, 3. No comments, 4. Against, 5. Completely against

TPB=Theory of planned behavior, MMH=Manual material handling