Overweight and obesity have become serious public health problems in China, threatening people's health. However, the weight management models currently available require further research and analysis.

To analyze the effect of an energy-limiting intermittent fasting mode combined with online intervention on weight management in overweight and obese people.

The overweight and obese people who underwent weight management in the Nutrition Department of Wuqing People's Hospital from January to October 2024 were selected as the research object, and divided into intervention (100 cases) and control (96 cases) groups by stratified random method. The control group adopted a conventional energy-limiting intermittent fasting diet model for weight management, while the intervention group used energy-limiting intermittent fasting diet model combined with online intervention for weight management. Changes in weight, metabolic rate, circumferences, muscle mass and before and BMI were assessed before the intervention, 2 months after intervention and 4 months after intervention.

Interactions between group and time were observed for weight, waist circumference and BMI (P_interaction<0.05). Main effects of group were significant for weight, waist circumference and BMI (P_group<0.05), and main effects of time were significant for these variables as well (P_time<0.05). Before the intervention, there were no significant differences between the two groups in terms of weight, waist circumference, BMI, muscle mass, metabolic rate, upper arm muscle circumference, calf circumference or body fat percentage (P>0.05). Four months after the intervention, the intervention group showed significant reductions in weight, waist circumference, BMI and body fat rate, and increased metabolic rate and upper brachial muscle circumference compared to the control group (P<0.05). There was no significant difference in calf circumference between the groups (P>0.05). The weight loss efficiency rate (WLER) was significantly higher in the intervention group (66.0%, 66/100) compared to the control group (20.8%, 20/96)(χ²=10.20, P=0.006). Group and time interactions were observed for exercise, eating behavior, emotional control and total score (P_interaction<0.05). The group had significant main effects on exercise, eating behavior, emotional control and total score respectively (P_group<0.05), and time also had significant main effects on these variables (P_time<0.05). Before the intervention, there were no significant differences in these scores between the groups (P>0.05). After 2 or 4 months of intervention, the above scores of the intervention group were significantly higher than those of the control group (P<0.05).

The energy-limiting intermittent fasting model combined with online intervention significantly improved the weight, metabolic rate, circumference and muscle mass in overweight and obese individuals, compared to the conventional energy-limiting intermittent fasting diet modelIt also enhanced self-management abilities of patients.

在我国，超重及肥胖已经成为危害人们健康的严重公共卫生问题之一，但体质量管理的模式还需进一步研究与分析。

分析限能量的间歇性禁食饮食模式联合线上干预对超重及肥胖人群体质量管理的效果。

选择2024年1—10月在天津市武清区人民医院临床营养科进行体质量管理的超重及肥胖人群作为研究对象，以分层随机法分为干预组（100例）和对照组（96例）。对照组采用常规宣教限能量的间歇性禁食饮食模式进行体质量管理，干预组采用限能量的间歇性禁食饮食模式联合线上干预进行体质量管理。对比两组干预前、干预后2个月、干预后4个月体质量、代谢率、围度、肌肉量及BMI的变化。

组别与时间对体质量、腰围及BMI存在交互作用（P_交互<0.05）；组别分别对体质量、腰围及BMI主效应显著（P_组间<0.05）；时间分别对体质量、腰围及BMI主效应显著（P_时间<0.05）。干预前2组体质量、腰围、BMI、肌肉量、代谢率、上臂肌围、小腿围、体脂率比较，差异无统计学意义（P>0.05）；干预后4个月时，干预组体质量、腰围、BMI、体脂率少于对照组，干预组代谢率、上臂肌围高于对照组（P<0.05），干预组与对照组小腿围比较，差异无统计学意义（P>0.05）。干预组体质量减轻有效率（WLER）为66.0%（66/100），高于对照组的20.8%（20/96），差异有统计学意义（χ²=10.20，P=0.006）。组别与时间对运动锻炼、饮食行为、情绪控制及总分存在交互作用（P_交互<0.05）；组别分别对运动锻炼、饮食行为、情绪控制及总分主效应显著（P_组间<0.05）；时间分别对运动锻炼、饮食行为、情绪控制及总分主效应显著（P_时间<0.05）。干预前干预组和对照组运动锻炼、饮食行为、情绪控制得分及总分得分比较，差异无统计学意义（P>0.05）；干预后2、4个月时，干预组以上得分均高于对照组（P<0.05）。

限能量的间歇性禁食饮食模式联合线上干预，较常规宣教限能量的间歇性禁食饮食干预模式对进行体质量管理的超重及肥胖人群的体质量、代谢率、围度、肌肉量的改善效果明显，且能提高患者的自我管理能力。