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Diniz KMA, Resende RA, Mascarenhas RDO, Silva HDJ, Filho RGT, Mendonça LDM. Hip passive stiffness is associated with hip kinematics during single-leg squat. J Bodyw Mov Ther 2021; 28:68-74. [PMID: 34776202 DOI: 10.1016/j.jbmt.2021.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/16/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Single-leg squat (SLS) is a test commonly used to assess lower limb function in rehabilitation. Increased hip adduction and internal rotation (IR) is associated with dynamic knee valgus, which is related to hip and knee overload. Proximal and distal factors, such as hip passive stiffness, poor hip muscle strength and excessive foot misalignment may influence hip movement. However, previous studies focus on how proximal and distal factors affected knee joint movement and did not reported the influence on hip joint. OBJECTIVE This study investigated the association of hip external rotators (ER) strength, hip passive stiffness and shank-forefoot alignment (SFA) with hip adduction and IR during SLS. DESIGN Cross-sectional study. METHOD Forty-six health participants of both sexes (23.47 ± 4.29 years, 60.40 ± 11.28 kg, 1.67 ± 8.9 m) had SFA, hip ER torque, hip passive stiffness and hip kinematics assessed. Multiple linear regressions were performed to identify the factors which associated with mean and peak hip adduction and IR movement during SLS. RESULTS Only hip passive stiffness was associated with mean (R2 = 0.164; Confidence Interval (CI) 95% = [-0.250, -0.048]; p = 0.005) and peak (R2 = 0.116; CI 95% = [-0.223, -0.210]; p = 0.019) hip IR movement. CONCLUSION Hip passive stiffness was associated with mean and peak hip IR movement during the SLS. These results suggest that individuals with reduced hip passive stiffness may demonstrate increased hip IR movement during SLS.
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Affiliation(s)
- Karen Marina Alves Diniz
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional (PPGReab) of Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil; Departamento de Fisioterapia - Faculdade de Ciências Biológicas e da Saúde - Universidade Federal dos Vales do Jequitinhonha e do Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil
| | - Renan Alves Resende
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional (PPGReab) of Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil; Department of Physical Therapy, Rehabilitation Sciences Program, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Rodrigo de Oliveira Mascarenhas
- Departamento de Fisioterapia - Faculdade de Ciências Biológicas e da Saúde - Universidade Federal dos Vales do Jequitinhonha e do Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil
| | - Hytalo de Jesus Silva
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional (PPGReab) of Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil; Departamento de Fisioterapia - Faculdade de Ciências Biológicas e da Saúde - Universidade Federal dos Vales do Jequitinhonha e do Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil
| | - Renato Guilherme Trede Filho
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional (PPGReab) of Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil; Departamento de Fisioterapia - Faculdade de Ciências Biológicas e da Saúde - Universidade Federal dos Vales do Jequitinhonha e do Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil
| | - Luciana De Michelis Mendonça
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional (PPGReab) of Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil; Departamento de Fisioterapia - Faculdade de Ciências Biológicas e da Saúde - Universidade Federal dos Vales do Jequitinhonha e do Mucuri (UFVJM), Rodovia MGT 367 - Km 583, n° 5000 Alto da Jacuba, CEP 39100-000, Diamantina, Minas Gerais, Brazil.
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Mahmood I, Martinez-Hernandez U, Dehghani-Sanij AA. Evaluation of gait transitional phases using neuromechanical outputs and somatosensory inputs in an overground walk. Hum Mov Sci 2020; 69:102558. [PMID: 31989950 DOI: 10.1016/j.humov.2019.102558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 08/08/2019] [Accepted: 11/14/2019] [Indexed: 12/18/2022]
Abstract
In a bipedal walk, the human body experiences continuous changes in stability especially during weight loading and unloading transitions which are reported crucial to avoid fall. Prior stability assessment methods are unclear to quantify stabilities during these gait transitions due to methodological and/or measurement limitations. This study introduces Nyquist and Bode methods to quantify stability gait transitional stabilities using the neuromechanical output (CoP) and somatosensory input (GRF) responses. These methods are implemented for five different walking conditions grouped into walking speed and imitated rotational impairments. The trials were recorded with eleven healthy subjects using motion cameras and force platforms. The time rate of change in O/Is illustrated impulsive responses and modelled in the frequency domain. Nyquist and Bode stability methods are applied to quantify stability margins. Stability margins from outputs illustrated loading phases as stable and unloading phases as unstable in all walking conditions. There was a strong intralimb compensatory interaction (p < .001, Spearman correlation) found between opposite limbs. Overall, both walking groups illustrated a decrease (p < .05, Wilcoxon signed-rank test) in stability margins compared with normal/preferred speed walk. Further, stabilities quantified from outputs were found greater in magnitudes than the instability quantified from inputs illustrating the neuromotor balance control ability. These stability outcomes were also compared by applying extrapolated-CoM method. These methods of investigating gait dynamic stability are considered as having important implications for the assessment of ankle-foot impairments, rehabilitation effectiveness, and wearable orthoses.
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Affiliation(s)
- Imran Mahmood
- Institute of Design, Robotics, and Optimisation, School of Mechanical Engineering, University of Leeds, Leeds, United Kingdom.
| | | | - Abbas A Dehghani-Sanij
- Institute of Design, Robotics, and Optimisation, School of Mechanical Engineering, University of Leeds, Leeds, United Kingdom
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