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Wearable Neuromuscu...
Wearable Neuromuscular Electrical Stimulation on Quadriceps Muscle Can Increase Venous Flow
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- Flodin, Johanna (author)
- Karolinska Institutet,Integrative Orthopedic Laboratory, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm
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- Wallenius, Philip (author)
- Integrative Orthopedic Laboratory, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm
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- Guo, Li (author)
- Högskolan i Borås,Akademin för textil, teknik och ekonomi
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- Persson, Nils-Krister (author)
- Högskolan i Borås,Akademin för textil, teknik och ekonomi
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- Ackermann, Paul (author)
- Karolinska Institutet,Integrative Orthopedic Laboratory, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Annals of Biomedical Engineering. - 0090-6964 .- 1573-9686. ; 51:12, s. 2873-2882
- Related links:
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https://doi.org/10.1...
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https://hb.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Neuromuscular electrical stimulation (NMES) of the quadriceps (Q) may increase venous blood flow to reduce the risk of venous thromboembolism. This study assessed whether Q-NMES pants could increase peak venous velocity (PVV) in the femoral vein using Doppler ultrasound and minimize discomfort. On 15 healthy subjects, Q-NMES using textile electrodes integrated in pants was applied with increasing intensity (mA) until the first visible muscle contraction [measurement level (ML)-I] and with an additional increase of six NMES levels (ML II). Discomfort using a numeric rating scale (NRS, 0–10) and PVV were used to assess different NMES parameters: frequency (1, 36, 66 Hz), ramp-up/-down time (RUD) (0, 1 s), plateau time (1.5, 4, and 6 s), and on:off duty cycle (1:1, 1:2, 1:3, 1:4). Q-NMES pants significantly increased PVV from baseline with 93% at ML I and 173% at ML II. Frequencies 36 Hz and 66 Hz and no RUD resulted in significantly higher PVV at both MLs compared to 1 Hz and 1 s RUD, respectively. Plateau time, and duty cycle did not significantly change PVV. Discomfort was only significantly higher with increasing intensity and frequency. Q-NMES pants produces intensity-dependent 2−3-fold increases of venous blood flow with minimal discomfort. The superior NMES parameters were a frequency of 36 Hz, 0 s RUD, and intensity at ML II. Textile-based NMES wearables are promising for non-episodic venous thromboembolism prevention.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Electrical stimulation therapy
- Muscle stimulation
- Skeletal muscles
- Thromboprophylaxis
- Deep vein thrombosis
- Venous thromboembolism
- Peak venous velocity
- Textile electrodes
- Smart textiles
Publication and Content Type
- ref (subject category)
- art (subject category)
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