Weight management telehealth intervention for overweight and obese rural cardiac rehabilitation participants: A randomised trial.
Susan Barnason, Lani Zimmerman, Paula Schulz and 2 others
PMID 30667588WHAT IT FOUND
Patients receiving a 12-week nurse-delivered telehealth weight programme plus cardiac rehabilitation averaged 13.7 pounds of weight loss versus 8 pounds with cardiac rehabilitation alone.
Physical activity and BMI did not differ significantly. This small pilot does not prove efficacy.
Key findings
01Weight change was the only weight outcome significant at the .05 level; adjusted mean loss was 13.7 pounds for the intervention group and 8 pounds for control.
02BMI and physical activity were not significantly different, although the intervention group averaged 24.0 versus 14.2 minutes per day of moderate or more intense activity at 6 months.
03The treatment group received usual cardiac rehabilitation plus calorie and portion education, telehealth sessions and telephone coaching, so the study cannot identify which component produced the weight change.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The study was a small pilot with 43 participants, and the authors did not expect conventional significance, so positive findings are preliminary. Participants came from two Midwestern tertiary hospitals and were not ethnically or economically diverse, limiting generalisability. The paper does not report how randomisation was performed or whether outcome assessors were blinded. The intervention was bundled with usual cardiac rehabilitation, calorie and portion education, telehealth sessions and coaching, so the effect of any single component cannot be separated. Physical activity data were limited: only 16 participants had data at both 4 and 6 months, and accelerometer wear varied. Follow-up weights at 9 and 12 months were self-reported, and sustained weight loss beyond 6 months was not objectively measured. Most perception outcomes were self-report; only weight and physical activity were objectively measured.
The easy way to misread this
Do not read the 13.7 versus 8 pound difference as proof that telehealth weight management works. The study was a small pilot, and the intervention bundled usual cardiac rehabilitation, calorie and portion education, 36 telehealth sessions and telephone coaching, so the contribution of any single component cannot be separated.