Profesyonel Doğal Vücut Geliştiricilerinden Diyafram Kalınlığının 1RM Kuvvetine Etkisi

Year 2025, Volume: 16 Issue: 2, 305 - 315, 20.08.2025

Coşkun Yılmaz , Hakan Hüseyin Soylu , Korhan Kavuran , Alper Demir , Baha Engin Çelikel , Süreyya Yonca Sezer

https://doi.org/10.17155/omuspd.1687119

Abstract

Profesyonel doğal vücut geliştirmeciler üzerinde yapılan çalışmalarda farklı antrenman yüklerinin performans üzerindeki olumlu etkileri iyi bilinmesine rağmen, diyafram kas kalınlığının 1RM kuvvetini nasıl etkilendiği belirsizdir. Çalışmanın amacı, diyafram kas kalınlığının profesyonel doğal vücut geliştiricilerde tek tekrar maksimal kuvveti (1RM) ile ilişkisinin incelenmesidir. Çalışmaya ulusal ve uluslararası yarışmalara katılmış aktif spor yapan 15 profesyonel doğal vücut geliştirici dâhil edilmiştir. Deneklerden solunum fonksiyon testleri, 1RM ve diyafram kas kalınlık ölçümleri alınmıştır. Elde edilen verilerin analizleri SPSS 25 istatistik paket programı ile hesaplanmıştır. Çalışmada 1RM değeri ile FVC, FEV1 ve PEFmax parametreleri ile pozitif anlamlı yüksek ilişki olduğu tespit edildi. FEV1/FVC oranı ile negatif düşük düzeyde bir ilişki tespit edildi. 1RM ile dinlenme, ekspirasyon ve inspirasyon evrelerinde diyafram kas kalınlığı ile pozitif orta düzeyde bir ilişki tespit edildi. Sonuç olarak, bu çalışma, diyafram kas kalınlığının vücut geliştirme antrenmanlarında 1RM performansı ile ilişkili olduğunu ortaya koymaktadır. Özellikle, diyafram kasının sadece solunumu destekleyen bir kas olarak değil, aynı zamanda intra-abdominal basıncı optimize ederek güç üretimine katkı sağlayan bir kas olarak da değerlendirilmesi gerektiğini göstermektedir.

Keywords

Diyafram Kas Kalınlığı, Vücut geliştirme, 1RM.

Ethical Statement

Araştırma için Fırat Üniversitesi Bilimsel Araştırma ve Yayın Etiği Kurulu’ndan 27/03/2025 tarihli, 525142 karar sayısı ile etik kurul izni alınmıştır.

The Effect of Diaphragm Thickness on 1RM Force From Professional Natural Bodybuilder

Abstract

Despite the well-documented positive effects of varying training loads on performance, as evidenced by studies on professional natural bodybuilders, the impact of diaphragm muscle thickness on 1RM strength remains unclear. The objective of this study was to examine the correlation between diaphragm muscle thickness and single repetition maximal force (1RM) in professional natural bodybuilders. The present study comprised a total of 15 professional natural bodybuilders who had participated in national and international competitions. Pulmonary function tests, 1RM and diaphragm muscle thickness measurements were obtained from the subjects. The subsequent analyses of the obtained data were calculated with the use of the SPSS 25 statistical package programme. The study established a positive and significant high correlation between the 1RM value and the FVC, FEV1 and PEFmax parameters. A negative low-level correlation was identified with the FEV1/FVC ratio. A positive moderate correlation was identified between 1RM and diaphragm muscle thickness during the rest, expiration and inspiration phases. In conclusion, this study reveals that diaphragm muscle thickness is associated with 1RM performance in bodybuilding training. In particular, it demonstrates that the diaphragm muscle should be regarded not only as a muscle responsible for respiration, but also as a muscle that contributes to power generation by optimising intra-abdominal pressure.

Keywords

Diaphragm Muscle Thickness, Bodybuilding, 1RM.

Ethical Statement

Ethical approval for the research was obtained from the Scientific Research and Publication Ethics Committee of Fırat University on 27/03/2025, decision number 525142.

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