Esparza Yánez, Wilmer
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Esparza Yánez, Wilmer
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Ambato

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One-minute sit-to-stand test reference values in people living at high altitudes

2025 , Mauricio Morales-Satan , Sofía Dávila-Oña , Rodrigo Torres-Castro , Cristhel Hidrovo-Moreno , Matías Otto-Yáñez , Esparza Yánez, Wilmer , Camila Madera , Carlos Moreta-Núñez , Pamela Serón , Lilian Solis-Navarro

Introduction: The one-minute sit-to-stand test (1min-STST) is a practical assessment tool for measuring functional ability. Reference values are currently unavailable for populations residing at high altitudes. Aims: To establish reference values for the 1min-STST in people living at high altitudes by sex and age range. Additionally, we correlate the variables analyzed with the number of repetitions obtained in the tests. Methods: Multicenter cross-sectional research was conducted, collecting data from two cities at high altitudes. Healthy adults between 18 and 80 years old were recruited. Anthropometric measurements, physical activity levels, smoking habits, and the number of repetitions during the 1min-STST were recorded. A multiple linear regression was performed to determine the predictive equations by sex. The stepwise method was used to generate the predictive model. Results: As many as 400 healthy subjects (58% women) were included. Participants had a median (P25-P75) height of 1.62 (1.56-1.68) cm, a weight of 63.0 (57.8-70.1) kg, and a BMI of 24.2 (22.5-26.0) kg/m2. The predictive equations were: 1minSTSTMen=19.833 - (age* 0.168) + (height * 0.204) - (weight * 0.122); 1minSTSTWomen= 27.845 - (age * 0.198) + (height * 0.145) - (weight* 0.094). Conclusion: The reference values for 1min-STST were determined for the healthy population aged 18-80 years living at high altitudes.

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Robotic-Assisted Gait Training Combined with Multimodal Rehabilitation for Functional Recovery in Acute Dermatomyositis: A Case Report

2025 , Esparza Yánez, Wilmer , Rebeca Benalcazar-Aguilar , Gabriela Moreno-Andrade , Israel Vinueza-Fernández

This case report examines the impact of robotic-assisted therapy (Lokomat) on functional recovery in a 28-year-old male patient with acute dermatomyositis (DM), an autoimmune inflammatory myopathy causing progressive muscle weakness and disability. The patient underwent 21 sessions of robotic therapy combined with physical therapy, and occupational therapy over seven weeks. Assessments were conducted at baseline, week 10, and week 21 using standardized measures for balance, muscle strength, and functionality. Results demonstrated significant improvements across all domains: balance scores progressed from severe impairment (4/56 Berg, 0/28 Tinetti) to near-normal function (55/56, 24/28, respectively); muscle strength increased from grade 1/5 to 4/5 (MMT-8) in all tested muscle groups; and functionality improved from moderate dependence (59/126 FIM) to complete independence (126/126). The trunk functionality scores showed remarkable recovery from 12/100 to 100/100 (TCT), indicating restored trunk control. Lokomat-assisted therapy combined with conventional rehabilitation effectively improves proximal weakness and postural instability in DM. Robotic therapy enhances motor learning via repetitive movements and reduces therapist workload. Though limited by a single-case design, this study offers preliminary evidence for robotic rehabilitation in DM, previously unexplored. Controlled studies are needed to standardize protocols and validate results in larger cohorts. Advanced technologies show promise for functional recovery in inflammatory myopathies.

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