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CC BY 4.0 · Arq Neuropsiquiatr 2023; 81(03): 271-283
DOI: 10.1055/s-0043-1764417
Original Article

Impaired flexibility in patients with tropical spastic paraparesis/HTLV-associated myelopathy: evaluation via pendulum fleximeter

Flexibilidade prejudicada em pacientes com paraparesia espástica tropical/mielopatia associada ao HTLV: avaliação via flexímetro pendular
Caroline Landim 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Cristiane Maria Carvalho Costa Dias 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Celso Nascimento 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Ana Lucia Barbosa Goes 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Thessika Hialla Almeida Araújo 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Adriele Ribeiro 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Francisco Tiago de Oliveira 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Humberto Castro-Lima 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
,
Ney Boa-Sorte 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
2   Universidade Federal da Bahia, Salvador BA, Brazil.
,
Bernardo Galvão-Castro 
1   Escola Bahiana de Medicina e Saúde Pública, Salvador BA, Brazil.
3   Fundação Oswaldo Cruz, Instituto Gonçalo Moniz, Laboratório Avançado de Saúde Pública, Salvador BA, Brazil.
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Abstract

Background Flexibility is crucial to the harmonious execution of joint movements. While skeletal muscle dysfunction in patients with HTLV-1 can interfere with mobility, it is unclear whether these patients experience reduced flexibility.

Objective To evaluate the differences in flexibility between HTLV-1-infected individuals with and without myelopathy compared with uninfected controls. We also investigated whether age, sex, body mass index (BMI), physical activity level, or lower back pain influence flexibility in HTLV-1-infected individuals.

Methods The sample consisted of 56 adults, of which 15 did not have HTLV-1, 15 had HTLV-1 without myelopathy, and 26 had TSP/HAM. Their flexibility was assessed using the sit-and-reach test and a pendulum fleximeter.

Results No differences in flexibility were observed between the groups with and without myelopathy and controls without HTLV-1 infection using the sit-and-reach test. The pendulum fleximeter results of individuals with TSP/HAM presented the lowest flexibility among the groups with respect to trunk flexion, hip flexion and extension, knee flexion, and ankle dorsiflexion, even after adjusting for age, sex, BMI, level of physical activity, and lower back pain using multiple linear regression models. Additionally, HTLV-1-infected individuals without myelopathy demonstrated reduced flexibility in movements: knee flexion, dorsiflexion, and ankle plantar flexion.

Conclusions Individuals with TSP/HAM demonstrated reduced flexibility in most of the movements evaluated by the pendulum fleximeter. Additionally, HTLV-1-infected individuals without myelopathy demonstrated reduced knee and ankle flexibility, potentially representing a marker of myelopathic development.

Resumo

Antecedentes A flexibilidade é fundamental para a execução harmoniosa dos movimentos articulares. Embora a disfunção do músculo esquelético em pacientes com HTLV-1 possa interferir na mobilidade, não está claro se esses pacientes apresentam flexibilidade reduzida.

Objetivo Avaliar as diferenças de flexibilidade entre os indivíduos infectados com e sem mielopatia e o grupo controle sem infecção HTLV-1. Também investigamos se idade, sexo, índice de massa corporal (IMC), nível de atividade física ou dor lombar influenciam a flexibilidade em indivíduos infectados pelo HTLV-1.

Métodos A amostra foi composta por 56 adultos, dos quais 15 não possuíam HTLV-1, 15 possuíam HTLV-1 sem mielopatia e 26 possuíam TSP/HAM. A flexibilidade foi avaliada por meio do teste de sentar e alcançar e do flexímetro de pêndulo.

Resultados Não foram observadas diferenças na flexibilidade entre os grupos com e sem mielopatia no teste de sentar e alcançar. Os resultados do flexímetro pendular dos indivíduos com TSP/HAM apresentaram a menor flexibilidade entre os grupos em relação à flexão do tronco, flexão e extensão do quadril, flexão do joelho e dorsiflexão do tornozelo, mesmo após ajuste para idade, sexo, IMC, nível de atividade física e dor lombar usando modelos de regressão múltipla linear. Além disso, os indivíduos infectados pelo HTLV-1 sem mielopatia demonstraram redução da flexibilidade nos movimentos de flexão do joelho, dorsiflexão e flexão plantar do tornozelo.

Conclusão Indivíduos com TSP/HAM demonstraram redução da flexibilidade na maioria dos movimentos avaliados pelo flexímetro pendular. Além disso, indivíduos infectados pelo HTLV-1 sem mielopatia demonstraram redução da flexibilidade do joelho e tornozelo, representando potencialmente um marcador de desenvolvimento mielopático.

Keywords

Human T-lymphotropic virus 1 - Tropical Spastic Paraparesis - Pliability - Articular Range of Motion

Palavras-chave

Vírus Linfotrópico T Tipo 1 Humano - Paraparesia Espástica Tropical - Maleabilidade - Amplitude de Movimento Articular

Authors' Contributions

BGC: designed and supervised the work; CL, CA, AR, FO, TA: acquired the data; CL: wrote the first draft; CL, CD, ALG, NBS, BGC: critically revised the manuscript. All authors read and approved the final version of the manuscript, analyzed and interpreted the data, and drafted the manuscript.


Support

This work was supported by the National Council for Scientific and Technological Development (Conselho Nacional de Desenvolvimento Científico e Tecnológico—CNPq), Foundation for Research Support of Bahia (Fundação de Amparo à Pesquisa do Estado da Bahia—FAPESB). Bernardo Galvão-Castro, Christiane Dias (Pr n0 60133/2022) and Ney Boa-Sorte received a research grant from the National Foundation for the Development of Private Higher Education (Fundação Nacional de Desenvolvimento do Ensino Superior Particular (FUNADESP), Caroline Landim received a scholarship from the Coordination for the Improvement of Higher Education Personnel (Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior (CAPES). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.




Publication History

Received: 02 June 2022

Accepted: 16 October 2022

Article published online:
14 April 2023

© 2023. Academia Brasileira de Neurologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution 4.0 International License, permitting copying and reproduction so long as the original work is given appropriate credit (https://creativecommons.org/licenses/by/4.0/)

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