Table 1 Summary of the intervention and procedure

1

Theoretical.

Biomechanics and risk factors.

Learning the basics of biomechanics, risk factors and clarification of erroneous beliefs regarding the causes or origin of non-specific neck pain.

2–4

Practical.

Exercises with thin resistance band.

Doing and learning strength and endurance exercises with thin resistance band. 1.3 kg resistance at 100% elongation.

5

Theoretical.

Psychosocial factors of the non-specific neck pain.

Knowing psychosocial factors of the non-specific neck pain.

6–8

Practical.

Exercises with medium resistance band.

Doing and learning strength and endurance exercises with medium resistance band. 1.7 kg resistance at 100% elongation.

9–11

Practical.

Exercises with heavy resistance band.

Doing and learning strength and endurance exercises with heavy resistance band. 2.1 kg resistance at 100% elongation.

12–14

Practical.

Exercises with extra heavy resistance band.

Doing and learning strength and endurance exercises with extra heavy resistance band. 2.6 kg resistance at 100% elongation.

15–16

Practical.

Exercises with special heavy resistance band.

Doing and learning strength and endurance exercises with special heavy resistance band. 3.3 kg resistance at 100% elongation.