Performance quality
Performance quality will be monitored by the physiotherapist.
The physiotherapist will reassess each participant at
the start of each session, and the exercises modified accordingly.
If there are significant increases in pain (Visual
Analogue Scale = 5 or greater) the physiotherapist will use
his/her clinical reasoning to reduce intensity of particular
aggravating exercises or add specific manual physiotherapy
treatment as required. To ensure that appropriate
muscle adaptation is achieved, the participant’s exercises
will be progressed according to the American College of
Sports Medicine (ACSM) guidelines [28] as soon as the
patient is able, and details and criteria for this progression
are described in the Additional file 1.