Purpose. Previous research has reported postural instability in subjects with Parkinson's disease (PD). However, there are still doubts about the effect of sensory stimuli on one's balance. In this study, we further investigated the stabilometric measures of individuals with PD, analysing the impact of different sensory stimuli on the outcomes. Methods. The total of 26 participants (13 with PD and 13 matched control peers) were submitted to 8 sensorimotor dynamics differing in relation to support base (30 cm vs. 10 cm, feet in parallel vs. feet in semi-tandem position), contact surface (foam vs. no foam), and visual conditions (eyes open vs. eyes closed). The measures used to assess one's balance were body position in space, area of support base, and velocity of postural control. The variables involved the anterior-posterior and the mediolateral axes. Participants with PD were evaluated during the off medication state. Mann-Whitney U test and Friedman's test were applied to carry out inter-and intra-group comparisons. Significance was set at 5%. Results. Cross-sectional analyses illustrated that tasks with sensory pitfalls impacted postural stability to a larger extent in PD subjects. The differences were found in anterior-posterior body position, area of support base, anterior-posterior velocity, and mediolateral velocity. Complementary analyses confirmed considerable instability on balance when support bases were small and visual information was absent (p < 0.05). Conclusions. The current results confirm worse postural stability response in subjects with PD and highlight that the interference of the sensory pitfalls is notable when individuals are off medication.
Objective To analyze the impact of the COVID-19 pandemic on the cognitive and motor functions in older people. Method In this cohort study, 90 older persons underwent cognitive (Mini-Mental State Examination and Frontal Assessment Battery) and motor (Timed Up and Go test and International Fall Questionnaire) tests in two moments: before the first case of the COVID-19 pandemic have been identified in Brazil and after the end of the state of public health emergency. The multiple analysis of variance was applied with the Wilk’s lambda test to verify the impact of the COVID-19 pandemic on the factors “time” (pre × post-pandemic), “group” (sex, marital status and education) and “interaction” (time × group). Effect size and statistical power are reported. Significance was set at 5%. Results Older persons presented cognitive decline during the COVID-19 pandemic (effect size: 0.43; statistical power: 99.8%; p=0.001). The decline was similar according to sex ( p=0.864), marital status ( p=0.910) and schooling ( p=0.969). The participants also suffered a motor decline during COVID-19 pandemic (effect size: 0.74; statistical power: 99.9%; p=0.001). The decline was similar according to sex ( p=0.542) and marital status ( p=0.260). Participants with lower educational level suffered greater physical decline than persons with higher schooling (effect size: 0.38; statistical power: 97.6%; p=0.004). Conclusion The COVID-19 pandemic affected the cognitive and motor functions of older persons. Participants with low schooling suffered a greater decline of their physical health during the pandemic, a fact that should encourage further studies on this thematic.
Resumo Objetivo Analisar o impacto da pandemia da covid-19 sobre as funções cognitivas e motoras de pessoas idosas. Método Neste estudo coorte, 90 idosos foram submetidos a testes cognitivos (Mini Exame do Estado Mental e Bateria de Avaliação Frontal) e motores (teste Timed Up and Go e Questionário Internacional de Queda) em dois momentos: antes do primeiro caso da pandemia ser identificado no Brasil e após o fim do estado de emergência em saúde pública. O teste de análise múltipla de variâncias para medidas repetidas foi aplicado junto ao teste lambda de Wilk para verificar o impacto da covid-19 sobre os fatores “momento” (pré × pós-pandemia), “grupo” (sexo, estado civil e escolaridade) e “interação” (momento × grupo). Tamanho do efeito e poder estatístico foram reportados. Significância foi admitida em 5%. Resultados Pessoas idosas sofreram declínio cognitivo durante a pandemia da covid-19 (tamanho do efeito: 0,43; poder estatístico: 99,8%; p=0,001). O declínio foi semelhante segundo sexo (p=0,864), estado civil (p=0,910) e escolaridade (p=0,969). Os participantes sofreram ainda declínio das funções motoras durante a pandemia (tamanho do efeito: 0,74; poder estatístico: 99,9%; p=0,001). O declínio foi semelhante segundo sexo (p=0,542) e estado civil (p=0,260). Participantes com menor escolaridade sofreram maior declínio físico do que pessoas com maiores níveis escolares (tamanho do efeito: 0,38; poder estatístico: 97,6%; p=0,004). Conclusão A pandemia da covid-19 afetou as funções cognitivas e motoras de pessoas idosas. Participantes com baixa escolaridade sofreram maior impacto da pandemia sobre sua saúde física, fato que deve incentivar novos estudos a explorar essa temática.
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