Supportive Care in Cancer

, 17:171 | Cite as

A prospective study of the determinants of exercise in bladder cancer survivors using the Theory of Planned Behavior

  • Kristina H. Karvinen
  • Kerry S. Courneya
  • Ronald C. Plotnikoff
  • John C. Spence
  • Peter M. Venner
  • Scott North
Original Article

Abstract

Goals of work

Although exercise has gained recognition as an effective supportive care intervention for cancer survivors, exercise participation rates are low. The present study examined the determinants of exercise in bladder cancer survivors using the Theory of Planned Behavior (TPB).

Patients and methods

Bladder cancer survivors (N = 397) residing in Alberta, Canada completed a mailed questionnaire at baseline that assessed demographic, medical, behavioral, and social cognitive variables and a second questionnaire 3 months later that assessed exercise. Multiple regression was the primary analysis.

Main results

Adjuvant therapy (r = −0.10, p = 0.021), cancer invasiveness (r = −0.10, p = 0.051), and age (r = −0.11, p = 0.037) were all negatively associated with exercise. Intention (β = 0.25, p < 0.001), perceived behavioral control (β = 0.18, p = 0.001), and planning (β = 0.12, p = 0.018) explained 20.9% of the variance in exercise over a 3-month period. Perceived behavioral control (β = 0.32, p < 0.001), affective attitude (β = 0.18, p = 0.002), instrumental attitude (β = 0.15, p = 0.025) and descriptive norm (β = 0.10, p = 0.032) explained 39.1% of the variability in exercise intention. Constructs from the TPB mediated the associations between adjuvant therapy, cancer invasiveness, age, and exercise. Age and adjuvant therapy also moderated some of the associations within the TPB.

Conclusions

Some medical and demographic variables predict exercise behavior in bladder cancer survivors, but these associations are mediated by the TPB. Interventions based on the TPB may be effective for promoting exercise in this cancer survivor population.

Keywords

Bladder cancer Exercise Determinants 

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Kristina H. Karvinen
    • 1
    • 4
  • Kerry S. Courneya
    • 1
  • Ronald C. Plotnikoff
    • 1
    • 2
  • John C. Spence
    • 1
  • Peter M. Venner
    • 3
  • Scott North
    • 3
  1. 1.Faculty of Physical Education & Recreation, E488 Van Vliet CentreUniversity of AlbertaEdmontonCanada
  2. 2.Centre for Health Promotion Studies, School of Public HealthUniversity of AlbertaEdmontonCanada
  3. 3.Department of Medical OncologyCross Cancer InstituteEdmontonCanada
  4. 4.Department of Exercise and Sport ScienceEast Carolina UniversityGreenvilleUSA

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