DM: Physical Activity (2007)

Study Design:
- Click here for explanation of classification scheme.
Quality Rating:
Research Purpose:
The purpose of this review is to refine the recommendation on the desired types, amounts, and intensities of aerobic physical activity for people with diabetes.
Inclusion Criteria:
Article inclusion criteria not described.
Exclusion Criteria:

Article exclusion criteria not described.

Description of Study Protocol:

Recruitment  Article selection methods not described. 

Design   Technical Review 

Blinding used (if applicable)  Not applicable

Intervention (if applicable)  Not applicable 

Statistical Analysis:  Not performed

Data Collection Summary:

Timing of Measurements  Not applicable 

Dependent Variables  Not applicable

Independent Variables Not applicable

Control Variables Not applicable


Description of Actual Data Sample:

Initial N: 190 studies included in review

Attrition (final N):  190

Age: Not mentioned

Ethnicity: Not mentioned

Other relevant demographics:


Location:  Worldwide studies


Summary of Results:

 See conclusions



Author Conclusion:

Recommendations for aerobic exercise in patients with type 2 diabetes

  • to improve glycemic control, assist with weight maintenance, and reduce risk of CVD:
    • at least 150 min/week of moderate intensity aerobic physical activity (40-60% of VO2max or 50-70% of maximum heart rate)
    • and/or at least 90 minutes per week of vigorous aerobic exercise (>60% VO2max or >70% maximum heart rate)
    • the physical activity should be distributed over at least 3 days/week and with no more than 2 consecutive days without physical activity
  • performing at least 4 or more hours per week of moderate to vigorous aerobic and/or reisistance exercise is associated with greater CVD  risk reduction than lower volumes of activity
  • for long-term maintenance of major weight loss (30 lb) larger volumes of exercise (7 hours of moderate or vigorous aerobic physical activity may be helpful
  • levels of evidence according to American Diabetes Association standards
    • A for improved glycemic control
    • B for CVD prevention and B for long-term maintenance of major weight loss

Recommendations for resistance exercise for patients with type 2 diabetes

  • in the absence of contraindications, people with type 2 diabetes should be encouraged to perform resistance exercise three times per week
    • workouts should include all major muscle groups
    • prgress to 3 sets of 8-10 repetitions at a weight that cannot be lifted more than 8-10 times
    • level of evidence: A

Recommendations for flexibility exercise:  Insufficient evidence to recommend for or against flexibility exercise as a routine part of the exercise prescription.

  • Recommendations for flexibility exercise


Funding Source:
Reviewer Comments:
Article selection methods and inclusion/exclusion criteria not described.
Quality Criteria Checklist: Review Articles
Relevance Questions
  1. Will the answer if true, have a direct bearing on the health of patients? Yes
  2. Is the outcome or topic something that patients/clients/population groups would care about? Yes
  3. Is the problem addressed in the review one that is relevant to dietetics practice? Yes
  4. Will the information, if true, require a change in practice? Yes
Validity Questions
  1. Was the question for the review clearly focused and appropriate? Yes
  2. Was the search strategy used to locate relevant studies comprehensive? Were the databases searched and the search termsused described? ???
  3. Were explicit methods used to select studies to include in the review? Were inclusion/exclusion criteria specified andappropriate? Wereselectionmethods unbiased? No
  4. Was there an appraisal of the quality and validity of studies included in the review? Were appraisal methodsspecified,appropriate, andreproducible? Yes
  5. Were specific treatments/interventions/exposures described? Were treatments similar enough to be combined? Yes
  6. Was the outcome of interest clearly indicated? Were other potential harms and benefits considered? Yes
  7. Were processes for data abstraction, synthesis, and analysis described? Were they applied consistently acrossstudies and groups? Was thereappropriate use of qualitative and/or quantitative synthesis? Was variation in findings among studies analyzed? Were heterogeneity issued considered? If data from studies were aggregated for meta-analysis, was the procedure described? Yes
  8. Are the results clearly presented in narrative and/or quantitative terms? If summary statistics are used, are levels ofsignificance and/or confidence intervals included? Yes
  9. Are conclusions supported by results with biases and limitations taken into consideration? Are limitations ofthe review identified anddiscussed? Yes
  10. Was bias due to the review's funding or sponsorship unlikely? Yes