Is there preliminary value to a within- and/or between-session change for determining short-term outcomes of manual therapy on mechanical neck pain?
OBJECTIVE
The primary purpose of this study was to determine whether occurrences of within- and between-session changes were significantly associated with functional outcomes, pain, and self-report of recovery in patients at discharge who were treated with manual therapy for mechanical neck pain. A secondary purpose was to determine the extent of change needed for the within- and between-session change in association to function.


METHODS
This secondary data analysis examined 56 patients who demonstrated a positive response to manual therapy during the initial assessment within a randomized controlled trial (RCT) that examined manual therapy techniques and a home exercise program (HEP). Within- and between-session findings were defined as 'changes in pain report during the initial session (within)' and 'changes in pain from baseline to 48-hours post initial assessment (between)'. Outcomes were analyzed for associations with the global rating of change (GRoC), self-report activity scale (SRAS), and a 50% reduction of the neck disability index (NDI) by discharge at 96 hours.


RESULTS
Findings indicate that within-session pain changes of 36.7% are strongly associated with a 50% change in NDI at 96 hours. Between-session changes in pain were associated with 50% change in NDI and a ≧3-point change in GRoC at 96 hours.


CONCLUSIONS
Both within- and between-session measures may be useful to predict success levels at 96 hours for NDI; however, between-session changes are more useful to predict success in GRoC. Measures used during clinical examination may help guide clinicians in identification of candidates best suited for the treatment.
Walsh University, USA.
Chad
C
Cook
Walsh University, USA.
Jessica
J
Lawrence
Walsh University, USA.
Katelyn
K
Michalak
Walsh University, USA.
Sidra
S
Dhiraprasiddhi
Walsh University, USA.
Megan
M
Donaldson
University of Des Moines, USA.
Shannon
S
Petersen
Youngstown State University, USA.
Kenneth
K
Learman
Between-session change; GRoC; Mechanical neck pain; NDI; Within-session change