Is adherence a clinically significant measure? An evidence based overview
Exercise programs are one of the main evidence based physical rehabilitation interventions for numerous medical conditions. According to motor learning studies, we know today that in order to regain functional capabilities a patient has to perform hundreds of repetitions of a specific task oriented exercise1. The patient must dedicate a lot of time during the day to his physical rehabilitation exercise program.
A problem that physiotherapists frequently encounter is that patients fail to recover from their injury as expected, with no apparent pathological basis predicting such a limited outcome. This problem may occur due to low adherence.
Adherence is defined as “the extent to which a person's behavior corresponds with agreed recommendations from a healthcare provider” (WHO, 2003). In the physiotherapy clinical world, adherence reflects the patient's commitment to the physical rehabilitation program.
Physiotherapists have to come up with creative ways to engage their patients so that they will complete their exercise regimen. As a result, adherence has become the focus of many researchers. Research has revealed that non-adherence is a widespread phenomenon – with “up to 65% of patients being either non-adherent or partially adherent to their home programs”2.
How is adherence measured?
Measuring adherence is quite complex since adherence comprises many elements, including:
2. Following advice from the PT.
3. Performing the exercise regimen.
4. The frequency of exercise regimen performance.
5. Performing exercises correctly.
6. Performing more or less what was prescribed3.
Measurements rely mainly on observations in the clinic and on questionnaires filled out at home, with patient diaries and self-report questionnaires being the most commonly reported methods of measuring adherence.
Diaries allow tracking and recording each time treatment activities are performed, including the number of repetitions of each exercise, the duration of application of ice or heat and other self-administered therapeutic methods, etc. Patients are expected to complete their diaries every time they undertake their home program, and bring them to each clinic appointment for checking and updating. The percentage of adherence to the prescribed home program can be calculated from the patient recordings.
The advantages of such dairies are that they can be an aid to adherence by acting as a cue to doing the activities, they are cheap, and they are very simple to use. These advantages, however, can be also viewed as a limitation –“a true objective measurement of the various aspects of patient’s adherence is not being obtained”2.
How can a therapist increase patient adherence?
This million dollar question is key to increasing outcome measures in physical rehabilitation programs. Increasing adherence may be different for each patient and should be tailored to physiological, psychological and social parameters. In general, however, there are a few points to which the physiotherapist can pay attention and make minor adjustments in order to either maintain or increase adherence:
1. Using quantitative measurements in the results4. For example, if the exercise regimen contains aerobic exercises such as walking or running, a pedometer is a good way to increase adherence.
2. Splitting the training into a few shorter (but more intense) sessions is better than one long session of moderate intensity5.
3. Giving less than 6 exercises in a session6.
4. Frequent supervision of exercises provides a higher level of adherence6.
5. Giving explanations and information regarding the exercises increases adherence6.
6. Providing feedback through goal-setting and repeated functional testing7.
At the end of the day it is the patient who is responsible to undertake the exercise regimen for good physical rehabilitation outcomes. The role of the physiotherapist is to implement effective and proven methods to enhance the patient’s adherence to the course of physical rehabilitation.
1. Gordon AM, Magill RA. Motor Learning:Application of Principles to Pediatric Rehabilitation. In: Campbell SK, Palisano RJ, Orlin MN, eds. Physical therapy for children. 4th ed. St. Louis, Mo.: Elsevier/Saunders; 2012:151-174.
2. Sandra Frances Bassett (2003). The Assessment of Patient Adherence to Physiotherapy Rehabilitation. New Zealand Journal of Physiotherapy 31(2): 60-66
3. Kolt G.S., Brewer B.W., Pizzari T., Schoo A.M.M., Garrett N. The sport injury rehabilitation adherence scale: a reliable scale for use in clinical physiotherapy. Physiotherapy. 2007;93(1)
4. Kirk, A., & Feo, P. (n.d.). Strategies to enhance compliance to physical activity for patients with insulin resistance. Appl. Physiol. Nutr. Metab. Applied Physiology, Nutrition, and Metabolism, 549-556.
5. Thøgersen-Ntoumani, C., Shepherd, S., Ntoumanis, N., Wagenmakers, A., & Shaw, C. (n.d.). Intrinsic Motivation in Two Exercise Interventions: Associations With Fitness and Body Composition.Health Psychology.
6. Medina-Mirapeix, F., Escolar-Reina, P., Gascón-Cánovas, J., Montilla-Herrador, J., Jimeno-Serrano, F., & Collins, S. (n.d.). Predictive factors of adherence to frequency and duration components in home exercise programs for neck and low back pain: An observational study. BMC Musculoskeletal Disorders, 155-155
7. Grindem, H., Risberg, M., & Eitzen, I. Two factors that may underpin outstanding outcomes after ACL rehabilitation. British Journal of Sports Medicine Br J Sports Med, 1425-1425.