Open Access
Handgrip strength, cardiometabolic risk and body composition in youth with type 1 diabetes: the Diactive-1 Cohort Study
(BMJ Publishing, 2024-12-04) Huerta Uribe, Nidia; Hormazábal Aguayo, Ignacio; Muñoz Pardeza, Jacinto; Chueca-Guindulain, María J.; Berrade-Zubiri, Sara; Andrés Sesma, Carlos; Burillo Sánchez, Elisabeth; Ezzatvar, Yasmin; Yáñez-Sepúlveda, Rodrigo; Izquierdo Redín, Mikel; García Hermoso, Antonio; Ciencias de la Salud; Osasun Zientziak
Objective: this study aimed to explore the association between handgrip strength, cardiometabolic risk (CMR) and body composition in youth with type 1 diabetes. Methods: for this prospective cohort study, muscular fitness was assessed via handgrip test and relativised by weight, and body composition, evaluated through dual-energy X-ray absorptiometry in type 1 diabetes patients aged 6-18 years. CMR score included z-scores for total body fat, blood pressure, glycated haemoglobin (HbA1c), low-density lipoprotein cholesterol, high-density lipoprotein cholesterol and triglyceride-glucose index. Results: eighty-three patients were analysed at baseline and 1-year follow-up (44.6% females, mean age 12.77 years). Individuals with high handgrip strength tended to have lower CMR and body fat compared with those with low handgrip strength. Over a year, individuals with high handgrip strength showed reduced HbA1c, CMR and subcutaneous fat. Consistently meeting high handgrip strength criteria resulted in reductions in HbA1c levels, CMR score and subcutaneous adipose tissue compared with those who never complied or lost compliance during follow-up. Additionally, subjects classified with high handgrip strength both at baseline and follow-up had a lower likelihood of being classified with high CMR (OR=0.241, 95% CI 0.121 to 0.947, p=0.044). Conclusions: high handgrip strength was associated with significant cardiometabolic and body composition benefits in youth with type 1 diabetes. This tool could be considered of potential clinical value for incorporating assessments like handgrip tests to monitor and address cardiometabolic health.
Open Access
Development and validation of a scale measuring perceived barriers to physical activity in Spanish for children and adolescents with type 1 diabetes: the Physical Activity Barriers Scale for pediatric type 1 diabetes (PABS-1) questionnaire
(Elsevier, 2025-06-01) García Hermoso, Antonio; Huerta Uribe, Nidia; Hormazábal Aguayo, Ignacio; Muñoz Pardeza, Jacinto; Chueca-Guindulain, María J.; Burillo Sánchez, Elisabeth; Ezzatvar, Yasmin; López Gil, José Francisco; Ciencias de la Salud; Osasun Zientziak; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
Aims: To develop and validate the psychometric properties, reliability, and criterion validity of the Physical Activity Barriers Scale for pediatric type 1 diabetes (PABS-1) in Spanish-speaking children and adolescents with type 1 diabetes. Method: A cross-sectional study was conducted with a sample of 93 Spanish-speaking children and adolescents with type 1 diabetes. The PABS-1 questionnaire was developed by experts and refined with patient feedback. Its validity was assessed by comparing results with accelerometer data, linking scores to objective physical activity measures. Results: The PABS-1 showed good internal consistency, with a Cronbach’s alpha (α) coefficient of 0.89, indicating strong reliability. Confirmatory factor analysis supported a four-factor structure, with physical, diabetes-related, psychological, and environmental barriers showing good fit indices (comparative fit index [CFA] = 0.94, root mean square error of [RMSEA] = 0.06, standardized root mean square residual [SRMR] = 0.05). Although the associations were small, the total PABS-1 score was significantly negatively correlated with cardiorespiratory fitness (Spearman’s rho [ρ]= -0.15, p = 0.035) and moderate-to-vigorous physical activity (ρ = − 0.12, p = 0.039). Among the four factors, motivational barriers exhibited the strongest associations with physical activity and fitness, showing significant negative correlations. Conclusions: The PABS-1 is a valid and reliable tool for assessing perceived barriers to physical activity in Spanish-speaking children and adolescents with type 1 diabetes.
Open Access
Comprehensive management of children and adolescents with type 1 diabetes mellitus through personalized physical exercise and education using an mHealth system: the Diactive-1 study protocol
(Frontiers Media, 2024) Hormazábal Aguayo, Ignacio; Muñoz Pardeza, Jacinto; López Gil, José Francisco; Huerta Uribe, Nidia; Chueca-Guindulain, María J.; Berrade-Zubiri, Sara; Burillo Sánchez, Elisabeth; Izquierdo Redín, Mikel; Ezzatvar, Yasmin; García Hermoso, Antonio; Ciencias de la Salud; Osasun Zientziak
Introduction: The use of new technologies presents an opportunity to promote physical activity, especially among young people with type 1 diabetes (T1DM), who tend to be less active compared to their healthy counterparts. The aim of this study is to investigate the impact of a personalized resistance exercise program, facilitated by the Diactive-1 App, on insulin requirements among children and adolescents diagnosed with T1DM. Methods and analysis: A minimum of 52 children and adolescents aged 8-18 years, who were diagnosed with T1DM at least 6 months ago, will be randomly assigned to either a group engaging in an individualized resistance exercise program at least 3 times per week over a 24-week period or a waiting-list control group. The primary outcome will be the daily insulin dose requirement. The secondary outcomes will include glycemic control, cardiometabolic profile, body composition, vascular function, physical fitness, 24-hour movement behaviors, diet, and psychological parameters. The usability of the app will also be assessed. Ethics and dissemination: Ethical approval to conduct this study has been granted by the University Hospital of Navarra Research Board (PI_2020/140). Parents or legal guardians of minors participating in the study will provide written consent, while children and adolescents will sign an assent form to indicate their voluntary agreement. The trial's main findings will be shared through conference presentations, peer-reviewed publications, and communication directly with participating families. This study aims to offer valuable insights into the holistic management of children and adolescents with T1DM by utilizing personalized exercise interventions through an mHealth system.
Open Access
Is fear of hypoglycemia a major barrier to an active lifestyle in children and adolescents with type 1 diabetes? The Diactive-1 study
(Wiley, 2023) Huerta Uribe, Nidia; Chueca-Guindulain, María J.; Berrade-Zubiri, Sara; Burillo Sánchez, Elisabeth; Izquierdo Redín, Mikel; García Hermoso, Antonio; Ciencias de la Salud; Osasun Zientziak; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
Studies on fear of hypoglycemia as a barrier to physical activity among youth with type 1 diabetes (T1D) have been limited and controversial, most of which used self-reported assessment. The aim of the study was to evaluate the relationship between fear of hypoglycemia and physical activity and glycemic metrics in children and adolescents with T1D. Seventy-four participants (6–18 years of age; 44.6% females) with T1D were included in the study. Physical activity was assessed through accelerometry on nine consecutive days, and blood glucose metrics were simultaneously tracked using continuous glucose monitoring (time-in-range and hypoglycemic events). A closed question was used to evaluate the avoidance of physical activity due to fear of hypoglycemia. Fifteen participants (20%) reported avoiding physical activity due to fear of hypoglycemia. The group reporting no fear of hypoglycemia showed lower total physical activity (−35.33min/day, 95% confidence interval [CI] (−77.57 to −1.47)) and light physical activity (−29.81min/day, 95% CI −64.01 to −2.75) and higher sedentary time (77.95min/day, 95% CI 26.46–136.87) per day compared with those with fear of hypoglycemia. No difference was found between those patients with fear of hypoglycemia in terms of meeting the recommendations of glycated hemoglobin, glucose coefficient of variation, and time-in-range when compared to those with no fear of hypoglycemia. In conclusion, children and adolescents with fear of hypoglycemia were more active, less sedentary, and had similar glycemic metrics to those without fear. Our results therefore suggest that fear of hypoglycemia may be less of a barrier to an active lifestyle than previously believed.

Huerta Uribe, Nidia

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