Objective To assess the efficacy of adding exercise to high-intensity
laser therapy (HILT) in improving treatment effectiveness for clinical outcomes
in patients with subacromial pain syndrome.
Methods Thirty patients with subacromial pain syndrome were randomly
assigned to the HILT-only group (n=15) or HILT&Exercise group
(n=15). The primary outcome was shoulder function and disability.
Secondary outcomes were pain, range of motion, proprioception (joint position
sense), and muscle strength.
Results Shoulder function and disability, pain, range of motion, joint
position sense, and some muscle strength improved in both groups
(p<0.05). There was no significant time-group interaction for the
Constant-Murley Score, Shoulder Pain and Disability Index, rest pain, range of
motion, and joint position sense (p>0.05). Time-group showed significant
effects for activity pain and strength in favor of the HILT&Exercise
group. Middle trapezius, lower trapezius, and supraspinatus strength increased
after HILT plus exercise (p<0.05), activity pain, upper trapezius,
serratus anterior, and subscapularis strength improved more compared to HILT
(p<0.05).
Conclusions We found no clinically important differences between HILT and
HILT-plus exercise in shoulder function and disability, rest pain, mobility, and
proprioception, in patients with subacromial pain syndrome. The addition of
exercise to HILT was superior to HILT for improving activity pain and muscle
strength.