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Changes in Skeletal Muscle Mass Index With Personalized Exercise and Meal Photo Analysis via Nutrition Applications:
Hidenori Onishi1, Yasutaka Mizukami1, Yuki Niida2
1Department of Community Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki Eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan, +81 776618264, +81 776618270.
JMIR Formative Research
|September 25, 2025
Summary
This study explored how a photo-based diet system and exercise plans impact skeletal muscle mass index (SMI) in community residents. Early results suggest a potential increase in SMI within three months, offering hope for sarcopenia management.
Area of Science:
- Gerontology
- Nutritional Science
- Exercise Physiology
Background:
- Sarcopenia, age-related muscle loss, poses a significant public health challenge.
- Effective interventions for community-dwelling older adults are crucial for maintaining muscle health.
- Current strategies often lack personalized, integrated approaches to diet and exercise.
Purpose of the Study:
- To evaluate the impact of a novel, integrated lifestyle intervention on skeletal muscle mass index (SMI).
- To assess the feasibility and preliminary efficacy of a photos-based dietary guidance system combined with personalized exercise plans.
- To explore potential trends in SMI changes over a 3-month period in community residents.
Main Methods:
- A cohort of community residents participated in the intervention.
- Intervention components included a photos-based dietary guidance system and personalized exercise plans.
- Meal photography feedback was utilized for dietary monitoring and adjustment.
- Skeletal Muscle Mass Index (SMI) was the primary outcome measure.
Main Results:
- Preliminary findings suggest a possible upward trend in SMI within the 3-month study period.
- The integrated approach combining dietary guidance and exercise showed potential for improving muscle mass.
- Further research is needed to confirm these initial observations and establish long-term effects.
Conclusions:
- An integrated lifestyle intervention incorporating photos-based dietary guidance and personalized exercise may positively influence SMI.
- This approach shows promise as a strategy to address sarcopenia in community-dwelling populations.
- The study highlights the potential of technology-assisted interventions for health management in aging populations.

