Research
Adherence
Higher attendance (threshold of 5+ sessions) in a theory-based weight loss intervention is associated with significantly greater weight loss and fat reduction, demonstrating a dose-response relationship for attendance.
To maximize weight loss from this program, aim to attend at least 5 of the 9 sessions. This threshold is associated with significantly greater weight loss and fat reduction compared to lower attendance.
GoodSupportsHIGH confidence
participants who attended five or more sessions lost significantly more weight at four (Mean diff = 3.7 Kg... p < 0.001) and 12 months (M difference = 4.1 Kg... p < 0.01), and reported greater reductions in fat intake at four months
Why this rating
RCT data showing clear threshold effect for attendance.
Source
Processes of behavior change and weight loss in a theory-based weight loss intervention program: a test of the process model for lifestyle behavior change
Fiona Gillison et al. · International Journal of Behavioral Nutrition and Physical Activity · 2015
DOI 10.1186/s12966-014-0160-6
rct · n=108Cited 156×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- A theory-based group weight loss intervention significantly increases dietary fiber intake, which mediates weight loss, but fails to significantly increase objectively measured physical activity despite improvements in self-efficacy and social support for activity.Good
- Improvements in self-efficacy and understanding of the behavior change process mediate successful dietary change through engagement in coping planning and self-monitoring, but these same mediators do not translate to increased physical activity.Good
Related findings · Adherence
- Regular physical activity (at least 150 minutes/week of moderate-intensity) reduces all-cause and cardiovascular mortality by 20-30% and lowers the risk of type 2 diabetes by 25-35%.Strong
- Increasing physical activity from a sedentary lifestyle to an active one in middle adulthood significantly reduces the risk of coronary events compared to remaining sedentary.Strong
- Resistance exercise is the only intervention capable of consistently restoring muscle function and strength in sarcopenia, partially overcoming age-related anabolic resistance.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →