HbA1c reduction and weight-loss outcomes: a systematic review and meta-analysis of community-based intervention trials among patients with type 2 diabetes mellitus

Effect of lifestyle intervention on HbA1c levels in overweight and obese adults with type 2 diabetes across ethnicities: A systematic review and meta-analysis of randomized controlled trials

AIMS

Weight reduction is fundamental for the management and remission of diabetes. We aimed to assess ethnic differences in the effects of lifestyle weight-loss interventions on HbA1c levels in overweight or obese adults with type 2 diabetes mellitus (T2DM).

METHODS

We systematically searched PubMed/MEDLINE and Web of Science online databases up to 31 Dec 2022. Randomized controlled trials using lifestyle weight-loss interventions in overweight or obese adults with T2DM were selected. We performed subgroup analyses to explore the heterogeneity across different ethnicities (Asians, White/Caucasians, Black/Africans and Hispanics). A random effects model was applied to calculate weighted mean difference (WMD) with 95% confidence interval (CI).

RESULTS

Thirty studies including 7580 subjects from different ethnicities were identified according to the predefined inclusion and exclusion criteria. HbA1c levels were significantly reduced by lifestyle weight-loss intervention. Notably, a significantly beneficial effect on HbA1c was observed in White/Caucasians (WMD = -0.59, 95% CI: -0.90, -0.28, P < 0.001) and Asians (WMD = -0.48, 95% CI: -0.63, -0.33, P < 0.001), but not in the Black/African or Hispanic group (both P > 0.05). The findings remained essentially unchanged in the sensitivity analysis.

CONCLUSIONS

Lifestyle weight-loss interventions had distinct beneficial effects on HbA1c levels in different ethnic groups with T2DM, especially in Caucasians and Asians.

Unmet basic needs and family functions gaps in diabetes management practice among Indonesian communities with uncontrolled type 2 diabetes: A qualitative study

Family members play a vital role in both helping and undermining diabetes mellitus selfmanagement practices. This qualitative study aimed to explore the potentially unmet needs of family function to support diabetes self-management (DSM) practices. In-depth interviews and focus group discussions (FGDs) were conducted among different key informants, including uncontrolled T2DM patients, caretakers and healthcare providers (HCPs) at community health centres. An open-ended approach was applied to elicit responses from the key informants. A total of 22 participants were involved in this study. All interview and FGD processes were audiorecorded and transcribed verbatim. The results found that all key informants addressed six core themes, with sub-themes to describe the unmet needs of family function to support DSM practice. The critical unmet needs of family function include: 1) Lack of problem-solving skills to deal with poor diabetes management; 2) Ineffective communication and refusal to share the burden of diabetes management; 3) Lack of affective responsiveness to encourage patients' compliance; 4) Lack of affective involvement in DSM; 5) Insufficient family roles in supporting patients; 6) Poor behaviour control of T2DM. Our findings provide insights into how family function may influence the adoption and maintenance of healthy behaviours among diabetic patients. Since health providers seek new approaches to improve DSM practices, this valuable finding was essential to understand how family function can improve and empower patients in DSM practice.

Evaluation of the Low Carb Program Digital Intervention for the Self-Management of Type 2 Diabetes and Prediabetes in an NHS England General Practice: Single-Arm Prospective Study

Background

Type 2 diabetes mellitus has serious health consequences, including blindness, amputation, and stroke. Researchers and clinicians are increasingly in agreement that type 2 diabetes may be effectively treated with a carbohydrate-reduced diet. Digital apps are increasingly used as an adjunct to traditional health care provisions to support remote self-management of long-term health conditions.

Objective

Our objective was to evaluate the real-world 12-month outcomes of patients prescribed the Low Carb Program digital health intervention at a primary care National Health Service (NHS) site. The Low Carb Program is a nutritionally focused, 12-session, digitally delivered, educational behavior change intervention for glycemic control and weight loss for adults with prediabetes and type 2 diabetes. The program educates and supports sustainable dietary changes focused on carbohydrate restriction by utilizing behavior change techniques, including goal setting, peer support, and behavioral self-monitoring, as well as personalized downloadable resources, including recipes and meal plans tailored to ethnicity, weekly shopping budget, and dietary preferences.

Methods

This study evaluated the real-world outcomes of patients recruited to the Low Carb Program at an NHS general practice in Southport, United Kingdom. All of the NHS patients recruited to the program were diagnosed with type 2 diabetes or prediabetes and were given access to the program at no cost. A total of 45 participants, with a mean age of 54.8 years (SD 13.2), were included in the study. Women made up 42% (19/45) of the sample. The mean hemoglobin A_1c (HbA_1c) of the sample was 56.7 mmol/mol (SD 16.95) and the mean body weight was 89.4 kg (SD 13.8).

Results

Of the 45 study participants recruited to the program, all of them (100%) activated their accounts and 37 (82%) individuals reported outcomes at 12 months. All 45 (100%) patients completed at least 40% of the lessons and 32 (71%) individuals completed more than nine out of 12 core lessons of the program. Glycemic control and weight loss improved, particularly for participants who completed more than nine core lessons in the program over 12 months. The mean HbA_1c went from 58.8 mmol/mol at baseline to 54.0 mmol/mol, representing a mean reduction of 4.78 mmol/mol (SD 4.60; t₃₁=5.87; P<.001). Results showed an average total body weight reduction of 4.17%, with an average weight reduction of 3.85 kg (SD 2.49; t₃₁=9.27; P<.001) at the 12-month follow-up point.

Conclusions

A digital app prescribed to adults with type 2 diabetes and prediabetes in a primary care setting supporting a transition to a low-carbohydrate diet has been shown to be effective in improving glycemic control and enabling weight loss. Further research to understand more about factors affecting engagement with the app and further positive health implications would be valuable.

A health-based coaching program for diabetes self-management (DSM) practice: A sequential exploratory mixed-method approach

BACKGROUND

Diabetes self-management (DSM) is crucial for glycemic control among type-2 diabetic (T2D) people.

METHOD

This was a sequential exploratory mixed-method approach to assess whether a health-based coaching program designed to fit the unmet needs of T2D was the best intervention for improving DSM practice. Twenty-eight participants from different backgrounds were involved in phase 1 (Qualitative study) to explore DSM knowledge and practice, any difficulties obstructing such knowledge and practice, and the feasibility of implementing an intervention program nationwide. Sixty patients were recruited for phase 2 (Quasi-experimental study). A health-based coaching program, constructed to fit the unmet needs from phase 1 was implemented among thirty patients in an experimental group. By comparison, 30 patients in the control group received their usual care. Diabetes and DSM knowledge, DSM practice, and health outcomes were measured and compared between the two groups at baseline and after the 12th week of the intervention.

RESULTS

The following problems were found: (1) a low perception of susceptibility to and severity of illness, (2) inadequate DSM knowledge and skills, (3) a lack of motivation to perform DSM practice, and (4) social exclusion and feelings of embarrassment. After the implementation of the program among the experimental group, all the variables improved relative to baseline and to the control group.

CONCLUSION

A health-based coaching program can improve DSM knowledge and practice and health outcomes. A nationwide program is recommended to promote DSM practice among Indonesian communities.

Protection motivation theory to predict intention of healthy eating and sufficient physical activity to prevent Diabetes Mellitus in Thai population: A path analysis

BACKGROUND AND AIMS

Diabetes mellitus is a global health problem causing premature death and economic burden. The study aimed to investigate an application of the protection motivation theory (PMT) model to explain the intention of healthy eating behaviors and physical activity among healthy Thais.

METHODS

This study was a part of a large case control focused only on the control group without noncommunicable diseases. Nine hundred ninety-seven subjects were drawn from eleven provinces of Thailand. A self-administered questionnaire was constructed based on the PMT model to gather information on predictive factors on eating behaviors and physical activity. Path analysis was used to determine whether the empirical data fit the PMT structure as well as to assess the strength of association among PMT constructed factors predicting behavioral intention.

RESULTS

The findings demonstrated that empirical data of eating behaviors (CMIN χ2 p-value = 0.462; CMIN/df = 0.901; NFI = 0.997; CFI = 1; RMSEA <0.001) and physical activity (CMIN χ2 p-value = 0.053; CMIN/df = 2.187; NFI = 0.987; CFI = 0.993; RMSEA = 0.035) fit the PMT. The strongest predictive factor of behavioral intention on eating behaviors was response efficacy (β = 0.146), while self-efficacy was found to be the strongest factor for physical activity (β = 0.11). Knowledge had the only indirect effect on behavior intention through perceived susceptibility and perceived severity.

CONCLUSION

In conclusion, information on susceptibility and severity should be incorporated in intervention strategies to enhance response efficacy and self-efficacy to prevent diabetes.

Self-management based coaching program to improve diabetes mellitus self-management practice and metabolic markers among uncontrolled type 2 diabetes mellitus in Indonesia: A quasi-experimental study

Diabetes mellitus self-management practice is an essential part of diabetes management among uncontrolled type 2 diabetes mellitus (T2DM). This study aimed to examine the effectiveness of the diabetes mellitus self-management (DMSM) based coaching program on improvement of the DMSM practice and metabolic markers. A quasi-experimental study, pre-test, and post-test design with the non-equivalent control group were applied in this study. Sixty samples were selected and were randomly assigned to both the experimental group and the control group. The Diabetes Self-Management Questionnaire (DSMQ) was used to measure the DMSM practice, while metabolic biomarkers were assessed by using the laboratory test. We conducted and compared the DMSM practice and clinical value at baseline and 12 weeks after completing the program. The DMSM based coaching program was a 12-week program with several strategies based on a self-management model. The findings showed that patients who received the DMSM based coaching program have a positive effect on DMSM practice and metabolic marker except for body mass index (BMI). This study revealed that the DMSM based coaching program was practical and feasible for implementation in a broad population with uncontrolled T2DM in Indonesia.