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Postural impairment is one of the most debilitating symptoms in people with Parkinson's disease (PD), which show faster and more variable oscillation during quiet stance than neurologically healthy individuals. Despite the center of pressure parameters can characterize PD's body sway, they are limited to uncover underlying mechanisms of postural stability and instability.Do a multiple domain analysis, including postural adaptability and rambling and trembling components, explain underlying postural stability and instability mechanisms in people with PD?Twenty-four individuals (12 people with PD and 12 neurologically healthy peers) performed three 60-s trials of upright quiet standing on a force platform. Traditional and non-linear parameters (Detrended Fluctuation Analysis- DFA and Multiscale Entropy- MSE) and rambling and trembling trajectories were calculated for anterior-posterior (AP) and medial-lateral (ML) directions.PDG's postural control was worse compared to CG, displaying longer displacement, higher velocity, and RMS. Univariate analyses revealed largely longer displacement and RMS only for the AP direction and largely higher velocity for both AP and ML directions. Also, PD individuals showed lower AP complexity, higher AP and ML DFA, and increased AP and ML displacement, velocity, and RMS of rambling and trembling components compared to neurologically healthy individuals.Based upon these results, people with PD have a lower capacity to adapt posture and impaired both rambling and trembling components compared to neurologically healthy individuals. These findings provide new insights to explain the larger, faster, and more variable sway in people with PD.

BACKGROUND: Stay active is a good strategy to mitigate the negative effects of confinement in people with Parkinson’s Disease (PD). Synchronous (full-time class interaction) and asynchronous (without the live presence of the healthcare professional) exercises are two strategies to avoid the worsening of PD. AIM: To investigate the effect of the synchronous and asynchronous exercise on motor and non-motor symptoms in people with PD during the pandemic lockdown. METHOD: Fifty-eight people with PD responded to an online survey and were divided into synchronous, asynchronous, and no-exercise groups. The participants responded to questions regarding motor and non-motor symptoms, besides the questionnaire of quality of life, physical activity, anxiety and depression, and sleep quality. RESULTS: Synchronous group presents higher amounts of physical activity than the asynchronous and no-exercise groups. Also, the synchronous group presented lower anxiety symptoms, while the asynchronous group presented lower depression symptoms compared with the no-exercise group. Worse motor symptoms were presented by the three groups. CONCLUSION: Stay active during the pandemic lockdown, is beneficial to reduce anxiety and depression symptoms in people with PD. This population should be encouraged to perform synchronous classes to perform greater amounts of physical activity, which in the long-term could produce greater benefits.

Made available in DSpace on 2022-05-01T13:11:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-03-01 This study aimed to investigate if the impairing in postural control, induced by ankle fatiguing exercise, remains after 24/48 h in young adults. Center of Pressure (CoP) was assessed in 16 participants (23 ± 3 years old) before, immediately after an ankle fatigability induction protocol (FI) and after 24 or 48 h of recovery using two 60-s trials with eyes open (EO) and closed (EC). The FI consisted of performing the ankle plantar flexion and dorsiflexion movement repeatedly (0.5 Hz). Ankle muscle fatigability increased CoP anterior-posterior (AP – p < 0.02) and medial–lateral (ML – p < 0.009) root mean square (RMS), and AP (p < 0.01) mean velocity immediately after compared to before FI. These effects remained after 24/48 h of recovery: higher CoP AP (p < 0.03) and ML (p < 0.009) RMS. No significant effects for detrend fluctuation analysis and entropy analysis among periods of postural evaluations was found. Fatigue*visual condition interaction revealed an increased AP median frequency (p < 0.001) during EC compared to EO only immediately after FI. Young adults’ body sway remains impaired until 48 h, but not the postural control adaptability and complexity. Visual information may not attenuate the late deleterious ankle muscle fatigability effects. Individuals should be cautious during balance tasks and exercise after fatiguing exercise in the next 24/48 h, therefore avoiding unbalances and falls. São Paulo State University (UNESP) School of Sciences Department of Physical Education Human Movement Research Laboratory (MOVI-LAB), São Paulo University Grenoble Alpes AGEIS Institut Universitaire de France REVAL Rehabilitation Research Center Faculty of Rehabilitation Sciences Hasselt University São Paulo State University (UNESP) School of Sciences Department of Physical Education Human Movement Research Laboratory (MOVI-LAB), São Paulo

The Physical Activity Scale for Individuals with Physical Disabilities (PASIPD) is not available to Portuguese-Brazil. This study translates, cross-culturally adapts, and validates the PASIPD for Brazilian individuals with Parkinson’s disease. The translation process followed guidelines: initial translation, synthesis, back translation, expert committee, and pretest. The validation and reliability processes were conducted with 40 individuals (15 men and 25 women) with Parkinson’s disease. Concurrent validity was evaluated between PASIPD to Brazilian Portuguese, International Physical Activity Questionnaire, and Human Activity Profile. PASIPD to Brazilian Portuguese was found to be moderately correlated with International Physical Activity Questionnaire (r = .474, p r = .271, p

Made available in DSpace on 2021-06-25T11:12:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-02-01 The aim of this study was to investigate the effects of ankle and hip muscle fatigue on motor adjustments (experiment 1) and symmetry (experiment 2) of postural control during a quiet standing task. Twenty-three young adults performed a bipedal postural task on separate force platforms, before and after a bilateral ankle and hip muscle fatigue protocol (randomized). Ankle and hip muscles were fatigued separately using a standing calf raise protocol (ankle fatigue) on a step and flexion and extension of the hip (hip fatigue) sitting on a chair, at a controlled movement frequency (0.5Hz), respectively. In both experiments, force, center of pressure, and electromyography parameters were measured. The symmetry index was used in experiment 2 to analyze the postural asymmetry in the parameters. Our main findings showed that muscle fatigue impaired postural stability, regardless of the fatigued muscle region (i.e., ankle or hip). In addition, young adults used an ankle motor strategy (experiment 1) before and after both the ankle and hip muscle fatigue protocols. Moreover, we found increased asymmetry between the lower limbs (experiment 2) during the quiet standing task after muscle fatigue. Thus, we can conclude that the postural motor strategy is not muscle fatigue joint-dependent and a fatigue task increases postural asymmetry, regardless of the fatigued region (hip or ankle). These findings could be applied in sports training and rehabilitation programs with the objective of reducing the fatigue effects on asymmetry and improving balance. Department of Physical Education Human Movement Research Laboratory (MOVI-LAB) Graduate Program in Human Movement School of Sciences São Paulo State University (UNESP) Department of Physical Education Laboratory of Information Vision and Action (LIVIA) Graduate Program in Human Movement School of Sciences São Paulo State University (UNESP) Centro Universitario Estacio de Ribeirão Preto Graduate Program in Physical Education and Sport School of Physical Education and Sport of Ribeirao Preto (EEFERP) University of São Paulo (USP) Department of Physical Education Human Movement Research Laboratory (MOVI-LAB) Graduate Program in Human Movement School of Sciences São Paulo State University (UNESP) Department of Physical Education Laboratory of Information Vision and Action (LIVIA) Graduate Program in Human Movement School of Sciences São Paulo State University (UNESP)