Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy
Spectral analysis of blood flow or blood volume oscillations can help to understand the regulatory mechanisms of microcirculation. This study aimed to explore the relationship between muscle hemodynamic response in the recovery period and exercise quantity. Fifteen healthy subjects were required to...
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MDPI AG
2021-04-01
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| Online Access: | https://www.mdpi.com/1424-8220/21/9/3072 |
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| author | Qitao Tan Yan Wang Zengyong Li Daifa Wang Wing-Kai Lam Duo Wai-Chi Wong Yinghu Peng Guoxin Zhang Ming Zhang |
| author_facet | Qitao Tan Yan Wang Zengyong Li Daifa Wang Wing-Kai Lam Duo Wai-Chi Wong Yinghu Peng Guoxin Zhang Ming Zhang |
| author_sort | Qitao Tan |
| collection | DOAJ |
| description | Spectral analysis of blood flow or blood volume oscillations can help to understand the regulatory mechanisms of microcirculation. This study aimed to explore the relationship between muscle hemodynamic response in the recovery period and exercise quantity. Fifteen healthy subjects were required to perform two sessions of submaximal plantarflexion exercise. The blood volume fluctuations in the gastrocnemius lateralis were recorded in three rest phases (before and after two exercise sessions) using near-infrared spectroscopy. Wavelet transform was used to analyze the total wavelet energy of the concerned frequency range (0.005–2 Hz), which were further divided into six frequency intervals corresponding to six vascular regulators. Wavelet amplitude and energy of each frequency interval were analyzed. Results showed that the total energy raised after each exercise session with a significant difference between rest phases 1 and 3. The wavelet amplitudes showed significant increases in frequency intervals I, III, IV, and V from phase 1 to 3 and in intervals III and IV from phase 2 to 3. The wavelet energy showed similar changes with the wavelet amplitude. The results demonstrate that local microvascular regulators contribute greatly to the blood volume oscillations, the activity levels of which are related to the exercise quantity. |
| first_indexed | 2024-03-10T11:53:30Z |
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| id | doaj.art-d7f3f5398faa47d7864659d4edb8ab73 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T11:53:30Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-d7f3f5398faa47d7864659d4edb8ab732023-11-21T17:34:16ZengMDPI AGSensors1424-82202021-04-01219307210.3390/s21093072Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared SpectroscopyQitao Tan0Yan Wang1Zengyong Li2Daifa Wang3Wing-Kai Lam4Duo Wai-Chi Wong5Yinghu Peng6Guoxin Zhang7Ming Zhang8Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, ChinaDepartment of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, ChinaKey Laboratory of Neuro-functional Information and Rehabilitation Engineering of the Ministry of Civil Affairs, National Research Center for Rehabilitation Technical Aids, Beijing 100176, ChinaSchool of Biological Science and Medical Engineering, Beihang University, Beijing 100191, ChinaDepartment of Kinesiology, Shenyang Sport University, Shenyang 110102, ChinaDepartment of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, ChinaDepartment of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, ChinaDepartment of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, ChinaDepartment of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, ChinaSpectral analysis of blood flow or blood volume oscillations can help to understand the regulatory mechanisms of microcirculation. This study aimed to explore the relationship between muscle hemodynamic response in the recovery period and exercise quantity. Fifteen healthy subjects were required to perform two sessions of submaximal plantarflexion exercise. The blood volume fluctuations in the gastrocnemius lateralis were recorded in three rest phases (before and after two exercise sessions) using near-infrared spectroscopy. Wavelet transform was used to analyze the total wavelet energy of the concerned frequency range (0.005–2 Hz), which were further divided into six frequency intervals corresponding to six vascular regulators. Wavelet amplitude and energy of each frequency interval were analyzed. Results showed that the total energy raised after each exercise session with a significant difference between rest phases 1 and 3. The wavelet amplitudes showed significant increases in frequency intervals I, III, IV, and V from phase 1 to 3 and in intervals III and IV from phase 2 to 3. The wavelet energy showed similar changes with the wavelet amplitude. The results demonstrate that local microvascular regulators contribute greatly to the blood volume oscillations, the activity levels of which are related to the exercise quantity.https://www.mdpi.com/1424-8220/21/9/3072near-infrared spectroscopywavelet transformmuscle recoveryhemodynamic response |
| spellingShingle | Qitao Tan Yan Wang Zengyong Li Daifa Wang Wing-Kai Lam Duo Wai-Chi Wong Yinghu Peng Guoxin Zhang Ming Zhang Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy Sensors near-infrared spectroscopy wavelet transform muscle recovery hemodynamic response |
| title | Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy |
| title_full | Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy |
| title_fullStr | Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy |
| title_full_unstemmed | Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy |
| title_short | Spectral Analysis of Muscle Hemodynamic Responses in Post-Exercise Recovery Based on Near-Infrared Spectroscopy |
| title_sort | spectral analysis of muscle hemodynamic responses in post exercise recovery based on near infrared spectroscopy |
| topic | near-infrared spectroscopy wavelet transform muscle recovery hemodynamic response |
| url | https://www.mdpi.com/1424-8220/21/9/3072 |
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