飞行时间法改良版:利用智能手机应用软件开发更精确的新型垂直跳跃高度测量方法。

IF 3.5 2区 医学 Q1 PHYSIOLOGY
Takuya Nishioka, Shota Yamaguchi, Takayuki Inami
{"title":"飞行时间法改良版:利用智能手机应用软件开发更精确的新型垂直跳跃高度测量方法。","authors":"Takuya Nishioka, Shota Yamaguchi, Takayuki Inami","doi":"10.1123/ijspp.2024-0063","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>The flight-time method (FT) is used for measuring vertical jump height (JH) in the field because of its convenience; however, FT overestimates JH when the lower limb is flexed at landing. Herein, we proposed a new method (ie, flight-time method modified [FTM]) to address the problem of FT and evaluate its validity and reliability.</p><p><strong>Methods: </strong>A total of 24 men performed 6 countermovement jumps on force plates (sampling rate: 1000 Hz) while being recorded with a smartphone high-speed camera at 240 frames·s-1. JH was calculated by the impulse-momentum method (IM), FT, and FTM. For FTM, the flight time and JH were calculated based on the displacement of the greater-trochanter marker using a smartphone application.</p><p><strong>Results: </strong>JH calculated using FT was significantly higher (P < .001) compared with JH calculated by IM; however, JH calculated by FTM showed no significant difference with JH calculated by IM. Furthermore, JH calculated by FTM, compared with JH calculated by FT (ρ = .882; 95% CI, .838-.914), exhibited a stronger, nearly perfect, and significantly positive correlation (ρ = .987; 95% CI, .982-.991) with JH calculated by IM and showed high reliability.</p><p><strong>Conclusions: </strong>The FTM proposed in this study had higher concurrent validity compared with FT and a high reliability for measuring countermovement JH because it was not affected by lower-extremity flexion at landing. Therefore, practitioners should consider using FTM as a convenient, low-cost, reliable, and more valid method for measuring JH in the field.</p>","PeriodicalId":14295,"journal":{"name":"International journal of sports physiology and performance","volume":" ","pages":"1-9"},"PeriodicalIF":3.5000,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Flight-Time Method Modified: Development of a Novel and More Accurate Method for Measuring Vertical Jump Height Using a Smartphone Application.\",\"authors\":\"Takuya Nishioka, Shota Yamaguchi, Takayuki Inami\",\"doi\":\"10.1123/ijspp.2024-0063\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose: </strong>The flight-time method (FT) is used for measuring vertical jump height (JH) in the field because of its convenience; however, FT overestimates JH when the lower limb is flexed at landing. Herein, we proposed a new method (ie, flight-time method modified [FTM]) to address the problem of FT and evaluate its validity and reliability.</p><p><strong>Methods: </strong>A total of 24 men performed 6 countermovement jumps on force plates (sampling rate: 1000 Hz) while being recorded with a smartphone high-speed camera at 240 frames·s-1. JH was calculated by the impulse-momentum method (IM), FT, and FTM. For FTM, the flight time and JH were calculated based on the displacement of the greater-trochanter marker using a smartphone application.</p><p><strong>Results: </strong>JH calculated using FT was significantly higher (P < .001) compared with JH calculated by IM; however, JH calculated by FTM showed no significant difference with JH calculated by IM. Furthermore, JH calculated by FTM, compared with JH calculated by FT (ρ = .882; 95% CI, .838-.914), exhibited a stronger, nearly perfect, and significantly positive correlation (ρ = .987; 95% CI, .982-.991) with JH calculated by IM and showed high reliability.</p><p><strong>Conclusions: </strong>The FTM proposed in this study had higher concurrent validity compared with FT and a high reliability for measuring countermovement JH because it was not affected by lower-extremity flexion at landing. Therefore, practitioners should consider using FTM as a convenient, low-cost, reliable, and more valid method for measuring JH in the field.</p>\",\"PeriodicalId\":14295,\"journal\":{\"name\":\"International journal of sports physiology and performance\",\"volume\":\" \",\"pages\":\"1-9\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-11-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International journal of sports physiology and performance\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1123/ijspp.2024-0063\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PHYSIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of sports physiology and performance","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1123/ijspp.2024-0063","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

目的:飞行时间法(FT)因其方便性而被用于野外测量垂直跳跃高度(JH);然而,当着陆时下肢屈曲时,FT会高估JH。在此,我们针对 FT 的问题提出了一种新方法(即改良飞行时间法 [FTM]),并对其有效性和可靠性进行了评估:方法:共 24 名男子在力板上进行了 6 次反向运动跳跃(采样率:1000 Hz),同时用智能手机高速摄像头以 240 帧-秒-1 的速度进行记录。JH通过脉冲-动量法(IM)、FT和FTM进行计算。对于 FTM,飞行时间和 JH 是根据大转子标记的位移使用智能手机应用程序计算得出的:结果:使用 FT 计算的 JH 明显高于使用 IM 计算的 JH(P < .001);然而,使用 FTM 计算的 JH 与使用 IM 计算的 JH 没有明显差异。此外,用 FTM 计算的 JH 与用 FT 计算的 JH 相比(ρ = .882;95% CI,.838-.914),与用 IM 计算的 JH 相比(ρ = .987;95% CI,.982-.991),表现出更强的、近乎完美的、显著的正相关性,并显示出较高的可靠性:本研究中提出的 FTM 与 FT 相比具有更高的并发有效性,并且由于不受着地时下肢屈曲的影响,因此在测量反运动 JH 时具有较高的可靠性。因此,从业人员应考虑使用 FTM 作为现场测量 JH 的一种方便、低成本、可靠且更有效的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Flight-Time Method Modified: Development of a Novel and More Accurate Method for Measuring Vertical Jump Height Using a Smartphone Application.

Purpose: The flight-time method (FT) is used for measuring vertical jump height (JH) in the field because of its convenience; however, FT overestimates JH when the lower limb is flexed at landing. Herein, we proposed a new method (ie, flight-time method modified [FTM]) to address the problem of FT and evaluate its validity and reliability.

Methods: A total of 24 men performed 6 countermovement jumps on force plates (sampling rate: 1000 Hz) while being recorded with a smartphone high-speed camera at 240 frames·s-1. JH was calculated by the impulse-momentum method (IM), FT, and FTM. For FTM, the flight time and JH were calculated based on the displacement of the greater-trochanter marker using a smartphone application.

Results: JH calculated using FT was significantly higher (P < .001) compared with JH calculated by IM; however, JH calculated by FTM showed no significant difference with JH calculated by IM. Furthermore, JH calculated by FTM, compared with JH calculated by FT (ρ = .882; 95% CI, .838-.914), exhibited a stronger, nearly perfect, and significantly positive correlation (ρ = .987; 95% CI, .982-.991) with JH calculated by IM and showed high reliability.

Conclusions: The FTM proposed in this study had higher concurrent validity compared with FT and a high reliability for measuring countermovement JH because it was not affected by lower-extremity flexion at landing. Therefore, practitioners should consider using FTM as a convenient, low-cost, reliable, and more valid method for measuring JH in the field.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
5.80
自引率
12.10%
发文量
199
审稿时长
6-12 weeks
期刊介绍: The International Journal of Sports Physiology and Performance (IJSPP) focuses on sport physiology and performance and is dedicated to advancing the knowledge of sport and exercise physiologists, sport-performance researchers, and other sport scientists. The journal publishes authoritative peer-reviewed research in sport physiology and related disciplines, with an emphasis on work having direct practical applications in enhancing sport performance in sport physiology and related disciplines. IJSPP publishes 10 issues per year: January, February, March, April, May, July, August, September, October, and November.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信