Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study
Physiological perfusion asymmetries in the lower limb are known, although poorly understood, as are asymmetries reported in plantar pressure and stance. This preliminary study aims to explore potential relationships between perfusion and pressure variables in humans. A convenience sample of eight he...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/3/441 |
| _version_ | 1797441632601112576 |
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| author | Luis Monteiro Rodrigues Sérgio Loureiro Nuno Tiago Granja Margarida Esteves Florindo João Gregório Tiago Atalaia |
| author_facet | Luis Monteiro Rodrigues Sérgio Loureiro Nuno Tiago Granja Margarida Esteves Florindo João Gregório Tiago Atalaia |
| author_sort | Luis Monteiro Rodrigues |
| collection | DOAJ |
| description | Physiological perfusion asymmetries in the lower limb are known, although poorly understood, as are asymmetries reported in plantar pressure and stance. This preliminary study aims to explore potential relationships between perfusion and pressure variables in humans. A convenience sample of eight healthy individuals (25.25 ± 5.37 years old) of both sexes, was selected. Chosen variables were perfusion, plantar pressure, and stance. Perfusion was measured in both feet by laser Doppler flowmetry (LDF) and polarized light spectroscopy (PSp), and plantar pressure and stance obtained by a pressure plate. These were measured in baseline (Phase I) in a repeated squatting (Phase II), and in recovery (Phase III). A 95% confidence interval was adopted. Intraindividual significant perfusion asymmetries between both feet were detected by LDF in Phase I. These disappeared in Phase II and returned in Phase III. PSp did not detect any asymmetries. Plantar pressure was also asymmetric and differently distributed along both feet with no statistical significance except in the hindfoot. Significant correlations were found between BMI and mean Plantar Pressure in Phase I and Phase III, and an inverse correlation between LDF perfusion and Plantar Pressure in Phase I. These results seem to suggest an interesting direction for exploration and study of these asymmetries in the absence of disease. |
| first_indexed | 2024-03-09T12:25:56Z |
| format | Article |
| id | doaj.art-947c4fd7c53b40d5a6ca1f08fffdcf5b |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T12:25:56Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-947c4fd7c53b40d5a6ca1f08fffdcf5b2023-11-30T22:34:40ZengMDPI AGSymmetry2073-89942022-02-0114344110.3390/sym14030441Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot StudyLuis Monteiro Rodrigues0Sérgio Loureiro Nuno1Tiago Granja2Margarida Esteves Florindo3João Gregório4Tiago Atalaia5CBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisbon, PortugalCBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisbon, PortugalCBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisbon, PortugalCBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisbon, PortugalCBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisbon, PortugalESSCVP—Department of Physiotherapy, The Portuguese Red Cross Health School, 1749-024 Lisbon, PortugalPhysiological perfusion asymmetries in the lower limb are known, although poorly understood, as are asymmetries reported in plantar pressure and stance. This preliminary study aims to explore potential relationships between perfusion and pressure variables in humans. A convenience sample of eight healthy individuals (25.25 ± 5.37 years old) of both sexes, was selected. Chosen variables were perfusion, plantar pressure, and stance. Perfusion was measured in both feet by laser Doppler flowmetry (LDF) and polarized light spectroscopy (PSp), and plantar pressure and stance obtained by a pressure plate. These were measured in baseline (Phase I) in a repeated squatting (Phase II), and in recovery (Phase III). A 95% confidence interval was adopted. Intraindividual significant perfusion asymmetries between both feet were detected by LDF in Phase I. These disappeared in Phase II and returned in Phase III. PSp did not detect any asymmetries. Plantar pressure was also asymmetric and differently distributed along both feet with no statistical significance except in the hindfoot. Significant correlations were found between BMI and mean Plantar Pressure in Phase I and Phase III, and an inverse correlation between LDF perfusion and Plantar Pressure in Phase I. These results seem to suggest an interesting direction for exploration and study of these asymmetries in the absence of disease.https://www.mdpi.com/2073-8994/14/3/441lower limb asymmetriesfoot perfusionplantar pressureCoPstancelaser doppler flowmetry |
| spellingShingle | Luis Monteiro Rodrigues Sérgio Loureiro Nuno Tiago Granja Margarida Esteves Florindo João Gregório Tiago Atalaia Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study Symmetry lower limb asymmetries foot perfusion plantar pressure CoP stance laser doppler flowmetry |
| title | Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study |
| title_full | Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study |
| title_fullStr | Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study |
| title_full_unstemmed | Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study |
| title_short | Perfusion, Stance and Plantar Pressure Asymmetries on the Human Foot in the Absence of Disease—A Pilot Study |
| title_sort | perfusion stance and plantar pressure asymmetries on the human foot in the absence of disease a pilot study |
| topic | lower limb asymmetries foot perfusion plantar pressure CoP stance laser doppler flowmetry |
| url | https://www.mdpi.com/2073-8994/14/3/441 |
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