Page 120 - Physical activity in recipients of solid organ transplantation - Edwin J. van Adrichem

Chapter 6
Motivation, self-e
univariate analysis (r
= .102,
c
acy, social support, being overweight, and educational level
while these are indicated as correlates in the general population.
p
= .013). Motivation and exercise self-e
Of these factors, only
exercise-self e

cacy had a signi

cant but minimal association with the level of PA in

cacy not being
identi

ed as associated factors in the current study is remarkable because there is ample
evidence of motivation and (general) self-e

cacy being strong correlates in the general
were not identi

ed as signi

cant associated factors of the level of PA in the current study
people actively working and people with a high education spending more time being
44–46
population; self-e
the signi

cacy was also identi
cantly associated factor ‘low expectations and self-con

Where it was expected that exercise self-e
ed in recipients of kidney transplantation.

cacy would have a stronger association with PA
dence’ better re
17,44–46
level than general self-e

ndings. Perhaps

cacy this was not substantiated by the current

ects
general self-e

cacy. A potential suppression of exercise self-e

cacy in the model through
multicollinearity with ‘low expectations and self-con
coe
cient of .182.

dence’ is ruled out by the correlation

ese results indicate that the associated factors of PA for the transplant
population are di
more substantial in

erent compared to the general population; other factors appear to be of

uence in this speci
and, therefore, should be interpreted with caution.

c population.

e amount of sedentary time was also assessed with self-reported questionnaires

e median sedentary time of 360
minutes per day (240-480) reported in the current sample is slightly higher but accords
with the average sedentary time in the general Dutch adult population of 342 minutes per
day.
As the number of studies into determinants and correlates of sedentary time are
considerably less than studies on PA level, the knowledge base is con

ned.
Notwithstanding, age, gender, BMI, educational level, and employment status are indicated
25
as consistent correlates of sedentary time in the general population.
gender, age, and BMI were not indicated as associated factors of sedentary time in the
47–50
Remarkably,
current study. Education level and employment status were associated with sedentary time;
sedentary.

erefore, participants actively working are likely to have professions with an
extensive amount of time spent in a sitting position. Individuals with a higher education
level are known to often have professions with a high sitting time.
Factors associated with
self-e

cacy; fear of negative e
ects, physical limitations, and health and physical outcomes.
47
sedentary time in the current study that are not indicated in previous studies were exercise

Surprisingly, scoring higher on the motivator health and physical outcomes was associated
with increased sedentary time.

is paradoxical result can possibly be explained by the
hypothesis that this motivator component is likely to be most experienced by participants
with a higher education level due to a greater level of knowledge on health and physical
outcomes of PA.

e total amount of explained variance in sedentary time in the current
study is limited (13%); possibly other predictive variables should be taken into account,
such as environmental correlates.
An employment status of not actively working or being retired was associated with
lower levels of PA and was also associated with less sedentary time. Consequently,
recipients that were actively working spent more time performing moderate to vigorous PA
and more time on sedentary behavior. Although this may appear contradictive, being able
118.