PA	Physical activity
LBP	Low back pain
L4	Lumbar spine level 4
L5	Lumbar spine level 5
LSBU	London South Bank University
AX3	3-axis/triaxial
UK	United Kingdom
USA	United States of America
cm	Centimetres
BM	Body mass
Kg	Kilogram
m2	Metres squared
Km/h	Kilometres per hour
hz	Hertz
BW/s	Loading dose per second
m/s2	Metre per second squared
fi	Frequency
g	Gravitational force
LD	Loading dose
LI	Loading intensity
ANOVA	Analysis of Variance
ICC	Intraclass Correlation Coefficient
SPSS	Statistical Package for Social Science
SD	Standard deviation
SW	Slow walking
NW	Normal walking
FW	Fast walking
SR	Slow running
NR	Normal running
FR	Fast running
AS	Ascending stairs
DS	Descending stairs
CI	Confidence intervals