VALIDITY AND RELIABILITY OF A LINEAR TRANSDUCER DEVELOPED FOR USE IN VELOCITY-BASED TRAINING

İzzet İnce

Makale detayları

VALIDITY AND RELIABILITY OF A LINEAR TRANSDUCER DEVELOPED FOR USE IN VELOCITY-BASED TRAINING

Yazarlar:

İzzet İnce

Yayıncı:

Ankara University

Ana Başlıklar:

Antrenman | Spor Biliminde Biyomekanik

Dergi:

SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi Vol.22 Issue 2, pp.47-58

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001319945

pISSN:

1304-284X

Anahtar kelimeler:

Özet:

 Velocity-based strength training VBT has gained significant attention in recent years. The most preferred devices for implementing this method are linear position transducers LPT. This study aimed to evaluate the reliability and validity of an LPT developed by the author, which includes both hardware and software components. The LPT, consisting of an optical encoder, Bluetooth, and Wi-Fi modules integrated into a microcontroller, was compared against the criterion device, the Tendo Power Analyzer. Thirteen weightlifters volunteered to participate in the study. Validity was assessed through simultaneous measurements of peak velocity during the clean pull exercise at various loads 40, 60, 90, and 110 of 1RM, while test-retest reliability was evaluated by repeating the same test protocols at the same time of day, one week apart. Reliability analysis included calculating the intraclass correlation coefficient ICC, coefficient of variation CV, standard error of measurement SEM, and minimum detectable change MDC. Validity was assessed using paired samples t-test, regression analysis, and Bland-Altman analysis. The ICC values ranged from 0.85 to 0.96, and the CV values ranged from 1.62 to 4.12. The SEM values were calculated to be between 0.045 ms¹ and 0.084 ms¹, while the MDC values ranged from 0.137 ms¹ to 0.236 ms¹. The differences were randomly distributed, with no systematic fixed or proportional bias observed in Bland-Altman plots. Similarly, regression analyses revealed no fixed or proportional bias. The results of the analyses demonstrate that the developed LPT is reliable and valid for measuring peak velocity during clean pull exercises across different loads.

 Velocity-based strength training VBT has gained significant attention in recent years. The most preferred devices for implementing this method are linear position transducers LPT. This study aimed to evaluate the reliability and validity of an LPT developed by the author, which includes both hardware and software components. The LPT, consisting of an optical encoder, Bluetooth, and Wi-Fi modules integrated into a microcontroller, was compared against the criterion device, the Tendo Power Analyzer. Thirteen weightlifters volunteered to participate in the study. Validity was assessed through simultaneous measurements of peak velocity during the clean pull exercise at various loads 40, 60, 90, and 110 of 1RM, while test-retest reliability was evaluated by repeating the same test protocols at the same time of day, one week apart. Reliability analysis included calculating the intraclass correlation coefficient ICC, coefficient of variation CV, standard error of measurement SEM, and minimum detectable change MDC. Validity was assessed using paired samples t-test, regression analysis, and Bland-Altman analysis. The ICC values ranged from 0.85 to 0.96, and the CV values ranged from 1.62 to 4.12. The SEM values were calculated to be between 0.045 ms¹ and 0.084 ms¹, while the MDC values ranged from 0.137 ms¹ to 0.236 ms¹. The differences were randomly distributed, with no systematic fixed or proportional bias observed in Bland-Altman plots. Similarly, regression analyses revealed no fixed or proportional bias. The results of the analyses demonstrate that the developed LPT is reliable and valid for measuring peak velocity during clean pull exercises across different loads.

 Velocity-based strength training VBT has gained significant attention in recent years. The most preferred devices for implementing this method are linear position transducers LPT. This study aimed to evaluate the reliability and validity of an LPT developed by the author, which includes both hardware and software components. The LPT, consisting of an optical encoder, Bluetooth, and Wi-Fi modules integrated into a microcontroller, was compared against the criterion device, the Tendo Power Analyzer. Thirteen weightlifters volunteered to participate in the study. Validity was assessed through simultaneous measurements of peak velocity during the clean pull exercise at various loads 40, 60, 90, and 110 of 1RM, while test-retest reliability was evaluated by repeating the same test protocols at the same time of day, one week apart. Reliability analysis included calculating the intraclass correlation coefficient ICC, coefficient of variation CV, standard error of measurement SEM, and minimum detectable change MDC. Validity was assessed using paired samples t-test, regression analysis, and Bland-Altman analysis. The ICC values ranged from 0.85 to 0.96, and the CV values ranged from 1.62 to 4.12. The SEM values were calculated to be between 0.045 ms¹ and 0.084 ms¹, while the MDC values ranged from 0.137 ms¹ to 0.236 ms¹. The differences were randomly distributed, with no systematic fixed or proportional bias observed in Bland-Altman plots. Similarly, regression analyses revealed no fixed or proportional bias. The results of the analyses demonstrate that the developed LPT is reliable and valid for measuring peak velocity during clean pull exercises across different loads.

 Hız temelli kuvvet antrenmanları, son yıllarda büyük ilgi gören bir yaklaşım olarak dikkat çekmektedir. Bu yöntemin uygulanmasında en sık tercih edilen cihazlar lineer transdüserlerdir. Bu araştırmada, donanımı ve yazılımı yazar tarafından geliştirilen bir lineer transdüserin güvenirlik ve geçerliğinin değerlendirilmesi amaçlanmıştır. Optik kodlayıcı, bluetooth ve Wi-Fi modülü ile donatılmış bir mikrodenetleyiciden oluşan bu lineer transdüser, kriter cihaz Tendo Power Analyzer ile karşılaştırılmıştır. Araştırmaya 13 halterci gönüllü olarak katılmıştır. Silkme çekişi esnasında farklı yüklerle 40, 60, 90 ve 110 1TM gerçekleştirilen eş zamanlı maksimum hız ölçümleri alınarak geçerlik değerlendirilmiş; bir hafta arayla, aynı saatte ve aynı test prosedürleri uygulanarak test-tekrar test güvenirliği incelenmiştir. Güvenirlik analizi için sınıf içi korelasyon katsayısı ICC, varyasyon katsayısı CV, ölçümlerin standart hatası SEM ve minimum tespit edilebilir değişim MDC hesaplanmıştır. Geçerlik, eşli örneklemler t-testi, regresyon analizi ve Bland-Altman analizi kullanılarak değerlendirilmiştir. ICC değerleri 0.85 ile 0.96 arasında değişmiş, CV değerleri 1.62 ile 4.12 arasında bulunmuştur. SEM değerleri 0.045 ms¹ ile 0.084 ms¹ arasında hesaplanmış, MDC değerleri ise 0.137 ms¹ ile 0.236 ms¹ arasında değişmiştir. Bland-Altman grafiklerine göre, farklar rastgele bir dağılım göstermiş ve sistematik sabit veya oransal bir sapma gözlenmemiştir. Regresyon analizleri sonucunda da sabit veya oransal sapma tespit edilmemiştir. Analiz sonuçları, geliştirilen cihazın silkme çekişi esnasında farklı yüklerle gerçekleştirilen maksimal hız ölçümlerinde güvenilir ve geçerli olduğunu ortaya koymaktadır.

Makale detayları

VALIDITY AND RELIABILITY OF A LINEAR TRANSDUCER DEVELOPED FOR USE IN VELOCITY-BASED TRAINING

Yazarlar:

İzzet İnce

Yayıncı:

Ankara University

Ana Başlıklar:

Antrenman | Spor Biliminde Biyomekanik

Dergi:

SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi Vol.22 Issue 2, pp.47-58

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001319945

pISSN:

1304-284X

Weightlifting

strength training

neuromuscular performance

strength and conditioningkuvvet antrenmanı

nöromüsküler performans

kuvvet ve kondisyon

halter

Sayı

Makale detayları

Yazarlar: İzzet İnce

Yayıncı: Ankara University

Ana Başlıklar: Antrenman | Spor Biliminde Biyomekanik

Dergi: SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi Vol.22 Issue 2, pp.47-58

Belge Tipi: Makale

Yayın Tarihi: 7/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001319945

pISSN: 1304-284X

Sayı

Yazarlar:

İzzet İnce

Yayıncı:

Ankara University

Ana Başlıklar:

Antrenman | Spor Biliminde Biyomekanik

Dergi:

SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi Vol.22 Issue 2, pp.47-58

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001319945

pISSN:

1304-284X