Düşük Maliyetle Geliştirilen Bir Kuvvet Platformunun Doğrulama Çalışması

Year 2024, Volume: 29 Issue: 3, 124 - 133, 31.07.2024

İzzet İnce

https://doi.org/10.53434/gbesbd.1428875

Abstract

Bu araştırmada, donanımı ve yazılımı yazar tarafından geliştirilen bir kuvvet platformunun test-tekrar test güvenilirliği ve eş zamanlı ölçüm geçerliği değerlendirilmiştir. Araştırmaya 17 katılımcı dahil edilmiş, her bir test için 60 veri analize alınmıştır. Güvenirlik için aktif sıçrama yüksekliği (AS), aktif sıçrama maksimal kuvvet (ASMK) ve izometrik orta uyluk çekiş (İOUÇ) testleri uygulanmıştır. Geçerlik için bir ticari kuvvet platformu kriter cihaz olarak kullanılmış ve 1000 Hz örnekleme hızıyla AS ile AS relatif kuvvet (ASRK) testleri uygulanmıştır. Güvenirlik analizleri sınıf içi korelasyon katsayısı (ICC), varyasyon katsayısı (CV), ölçümlerin standart hatası (SEm) ve algılanabilir minimum değişim (MDC) üzerinden yapılmıştır. Geçerlik analizlerinde ise eşli örneklemler t-testi, Blant-Altman analizi ve regresyon analizleri kullanılmıştır. Güvenirlik analizlerinde, ICC değerleri yüksek düzeyde (0.988 - 0.995) bulunurken, CV değerleri %2.30 ile %4.91 aralığında değişmiştir. SEM değerleri AS için 0.93 cm, ASMK için 47.47 N ve İOUÇ için 90.05 N olarak belirlenmiştir. MDC değerleri AS için 2.59 cm, ASMK için 130.47 N ve İOUÇ için 32.49 N aralığında yer almıştır. Geçerlik analizleri, t-testi sonuçları AS için önemsiz bulunurken (p=0.263), ASRK için anlamlı bir fark (p=0.001) tespit edilmiştir. Blant- Altman analizi sonuçlarına göre mutlak fark ortalaması AS için 0.00016 cm (-0.010 cm - 0.008 cm), ASRK için 0.015 N (-0.215 N - 0.286 N) olarak bulunmuştur. Regresyon analizinde, R2 değerleri yüksek (0.967 - 0.988) bulunmuş, her iki ölçümde de regresyon kesim noktası güven aralığı 0değerini içermiştir, eğim noktası güven aralığı ise 1 değerini içermiştir. Bu araştırmanın sonuçları, geliştirilen cihazın test-tekrar test güvenirliğinin ve eş zamanlı geçerliğinin yüksek düzeyde olduğunu ve uygulamada kullanılabilecek yeterliliğe sahip olduğunu göstermektedir.

Keywords

Güç, Sıçrama, Kuvvet plakası, Kuvvet ölçümü, Kinetik ve kinematik

Ethical Statement

Helsinki Deklerasyonu 2008 prensiplerine göre yürütülen çalışmanın etik kurul onayı AYBÜ Fen ve Mühendislik Bilimleri Etik Kurulun’dan alınmıştır (Belge No: 12/04/2023 03-03).

Supporting Institution

AYBÜ Projeleri Koordinasyon Birimi (BAP, Proje Numarası: THD-2023-2492) tarafından desteklenmiştir

Project Number

THD-2023-2492

The Validation Study of a Low-Cost Force Platform

Abstract

In this study, the test-retest reliability and concurrent validity of a force platform, developed by the author with custom hardware and software, were evaluated. Seventeen participants were included in the study, with 60 data points analyzed for each test. For reliability assessment, counter movement jump (CMJ), counter movement jump force (CMJF), and isometric mid-thigh pull (IMTP) tests were conducted. For validity, a commercial force platform was used as the criterion device,and CMJ and CMJ relative force (CMJRF) tests were conducted at a sampling rate of 1000 Hz. Reliability analyses included intraclass correlation coefficients (ICC), coefficients of variation (CV), standard error of measurements (SEM), and minimal detectable change (MDC). Validity analyses included paired samples t-tests, Bland Altman analyses, and regression analyses. In reliability analyses, ICC values were found to be high (0.988 - 0.995), while CV values ranged from 2.30% to 4.91%. SEM values were determined to be 0.93 cm for CMJ, 47.47 N for CMJF, and 90.05 N for IMTP.MDC values ranged from 2.59 cm for CMJ to 130.47N for CMJF and 32.49N for IMTP. Validity analyses revealed no significant differences for CMJ (p=0.263) but significant differences for CMJRF (p=0.001) in t-test results. According to Bland-Altman analysis, the mean absolute difference was 0.00016 cm for CMJ (-0.010 cm - 0.008 cm) and 0.015 N for CMJRF (-0.215 N - 0.286 N). Regression analyses showed high R2 values (0.967 - 0.988), with regression intercept confidence intervals containing 0 and slope confidence intervals containing 1 for both measurements. The results of this study indicate that the developed device exhibits high levels of test-retest reliability and concurrent validity, demonstrating suitability for practical application.

Keywords

Kinetics and kinematics, Power, Jump, Force plate, Force measurement

Ethical Statement

Bu araştırma, AYBÜ Fen ve Mühendislik Bilimleri Etik Kurulunun 12/04/2023 tarih 03-03 sayılı kararı ile etik açıdan uygun bulunmuştur.

Supporting Institution

Bu çalışma, Ankara Yıldırım Beyazıt Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi tarafından THD-2023-2492 kodlu proje desteği ile gerçekleştirilmiştir.

Project Number

THD-2023-2492

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