A novel prophylactic Chinese parachute ankle brace
2021 Annals of Translational Medicine. All rights reserved..
BACKGROUND: The objective is to compare the effects of a self-designed and self-manufactured novel prophylactic ankle brace [Chinese parachute ankle brace (CPAB)] and two ordinary ankle braces on the ankle joint during a half-squat parachute landing (HSPL) via biomechanical assessment.
METHODS: Twenty elite paratroopers were in four different conditions: no brace, elastic brace, semi-rigid brace, and CPAB. Each participant was instructed to jump off a platform with three different heights, 40, 80, and 120 cm, and land on the force plate in a half-squat posture. The vertical ground reaction forces (vGRFs), joint angles, moments, powers, and works were calculated. After the experiment, every participant completed the questionnaires designed for this study.
RESULTS: Increasing the dropping height increased all of the parameters significantly (P<0.01), except for time to peak vGRF (T-PvGRF). Applying three braces can all slightly increase vGRF (P=0.237) and reduce T-PvGRF by 6-10 ms, as well as decrease the joint angles, velocities, and moments on the sagittal and coronal planes. Wearing CPAB and a semi-rigid brace more efficiently restricted dorsiflexion and inversion (P<0.05), and they both significantly reduced ankle work (t=5.107, P<0.01; t=3.331, P<0.01) and peak power (t=7.237, P<0.01; t=6.711, P<0.01) at 120 cm. The total scores from low-to-high were semi-rigid brace (19.20±2.99), elastic brace (21.91±3.25), and CPAB (23.37±3.08).
CONCLUSIONS: The CPAB was more effective at restricting ankle joint motion on the coronal and sagittal planes than the other two prophylactic ankle braces. Therefore, the CPAB had the advantages of a novel appearance, high efficiency, and superior comfort, providing a reliable choice for parachute jumping and training in China.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2021 |
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Erschienen: |
2021 |
Enthalten in: |
Zur Gesamtaufnahme - volume:9 |
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Enthalten in: |
Annals of translational medicine - 9(2021), 4 vom: 14. Feb., Seite 318 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Zhou, Xi [VerfasserIn] |
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Links: |
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Themen: |
Ankle joint |
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Anmerkungen: |
Date Revised 21.04.2022 published: Print Citation Status PubMed-not-MEDLINE |
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doi: |
10.21037/atm-20-4937 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM322658268 |
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520 | |a 2021 Annals of Translational Medicine. All rights reserved. | ||
520 | |a BACKGROUND: The objective is to compare the effects of a self-designed and self-manufactured novel prophylactic ankle brace [Chinese parachute ankle brace (CPAB)] and two ordinary ankle braces on the ankle joint during a half-squat parachute landing (HSPL) via biomechanical assessment | ||
520 | |a METHODS: Twenty elite paratroopers were in four different conditions: no brace, elastic brace, semi-rigid brace, and CPAB. Each participant was instructed to jump off a platform with three different heights, 40, 80, and 120 cm, and land on the force plate in a half-squat posture. The vertical ground reaction forces (vGRFs), joint angles, moments, powers, and works were calculated. After the experiment, every participant completed the questionnaires designed for this study | ||
520 | |a RESULTS: Increasing the dropping height increased all of the parameters significantly (P<0.01), except for time to peak vGRF (T-PvGRF). Applying three braces can all slightly increase vGRF (P=0.237) and reduce T-PvGRF by 6-10 ms, as well as decrease the joint angles, velocities, and moments on the sagittal and coronal planes. Wearing CPAB and a semi-rigid brace more efficiently restricted dorsiflexion and inversion (P<0.05), and they both significantly reduced ankle work (t=5.107, P<0.01; t=3.331, P<0.01) and peak power (t=7.237, P<0.01; t=6.711, P<0.01) at 120 cm. The total scores from low-to-high were semi-rigid brace (19.20±2.99), elastic brace (21.91±3.25), and CPAB (23.37±3.08) | ||
520 | |a CONCLUSIONS: The CPAB was more effective at restricting ankle joint motion on the coronal and sagittal planes than the other two prophylactic ankle braces. Therefore, the CPAB had the advantages of a novel appearance, high efficiency, and superior comfort, providing a reliable choice for parachute jumping and training in China | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Ankle joint | |
650 | 4 | |a biomechanics | |
650 | 4 | |a half-squat parachute landing (HSPL) | |
650 | 4 | |a prophylactic braces | |
650 | 4 | |a subjective scoring | |
700 | 1 | |a Wu, Di |e verfasserin |4 aut | |
700 | 1 | |a Wu, Xiangdong |e verfasserin |4 aut | |
700 | 1 | |a Li, Zhengyao |e verfasserin |4 aut | |
700 | 1 | |a Yan, Bin |e verfasserin |4 aut | |
700 | 1 | |a Liang, Leilei |e verfasserin |4 aut | |
700 | 1 | |a He, Yu |e verfasserin |4 aut | |
700 | 1 | |a Liu, Yong |e verfasserin |4 aut | |
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