Genç Yetişkinlerde Solunum Kas Kuvvetinin Optimal Eşik Değerleri

Öz

Genç yetişkinlerde solunum kaslarının önemi iyi bilinmekle birlikte, egzersiz kapasitesini ayırt edebilecek eşik değerler yeterince araştırılmamıştır. Bu çalışma, genç yetişkinlerde altı dakikalık yürüme testi (6DYT) performansını daha iyi ayırt edebilmek için maksimum inspiratuar basınç (MIP) ve maksimum ekspiratuar basınç (MEP) eşik değerlerini belirlemeyi amaçlamaktadır. Bu kesitsel çalışmaya, ortalama yaşı 21,6 ± 1,2 yıl olan ve %65,5’i kadın olan toplam 84 belirgin hastalık belirtisi göstermeyen katılımcı dahil edildi. Katılımcıların ortalama Altı Dakikalık Yürüme (6DYT) mesafesi 575,0 ± 67,4 m, ortalama maksimum inspiratuar basınç (MIP) 87,4 ± 33,1 cmH₂O ve ortalama maksimum ekspiratuar basınç (MEP) 118,4 ± 44,0 cmH₂O olarak ölçüldü. Egzersiz kapasitesi, 6DYT ile ölçüldü. Solunum kas kuvveti ise dijital bir basınç ölçer cihazı kullanılarak değerlendirildi. MIP, 6DYT performansının bağımsız ve anlamlı bir belirleyicisi olarak bulundu ve varyansın %27’sini açıkladı (p<0,001). MIP ve MEP’nin egzersiz kapasitesini ayırt etme yeteneği, sırasıyla 0.764 (p= 0.001, %95 CI: 0.640–0.889) ve 0.719 (p= 0.004, %95 CI: 0.587–0.851) olan eğri altı alan (AUC) değerleri ile gösterilmiş olup, bu değerler ayırt edicilik açısından kabul edilebilir düzeyde olarak değerlendirilmektedir. Bu bulgular, solunum kas kuvvetinin genç yetişkinlerde egzersiz kapasitesinin önemli bir belirleyicisi olabileceğini göstermektedir. Belirlenen eşik değerlerin altında solunum kas kuvvetine sahip bireyler için çeşitli müdahale stratejilerinin geliştirilmesi ve uzunlamasına çalışmalarda test edilmesi önerilmektedir.

Anahtar Kelimeler

• Egzersiz Kapasitesi
• Solunum Kas Kuvveti
• Altı Dakika Yürüme Testi
• Genç Yetişkinler

Optimal Cut-Off Scores for Respiratory Muscle Strength in Young Adults

Abstract

The importance of respiratory muscles in young adults is well recognized, yet cut-off values for differentiating exercise capacity remain underexplored. This study aimed to identify the maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP) cut-off points to better distinguish six-minute walk test (6MWT) performance in young adults. This cross-sectional study included 84 apparently healthy participants (mean age: 21.6 ± 1.2 years; 65.5% female). The mean Six-Minute Walk Test distance was 575.0 ± 67,4 m, mean MIP was 87.4 ± 33.1 cmH₂O, and mean MEP was 118.4 ± 44.0 cmH₂O. Exercise capacity was measured using the Six-Minute Walk Test (6MWT) . Respiratory muscle strength was assessed using a digital pressure meter. MIP emerged as an independent and significant determinant of 6MWT performance, accounting for 27% of the variance (p<0.001). The discriminative ability of MIP and MEP for exercise capacity was demonstrated by an area under the curve (AUC) of 0.764 (p= 0.001, 95% CI: 0.640–0.889) and 0.719 (p= 0.004, 95% CI: 0.587–0.851), respectively, indicating acceptable levels of discrimination. These findings suggest that respiratory muscle strength may serve as a valuable discriminator of exercise capacity in young adults. It is recommended that various intervention strategies be developed and tested in longitudinal studies for individuals whose respiratory muscle strength falls below the identified cut-off scores.

Keywords

• Exercise Capacity
• Respiratory Muscle Strength
• Six-Minute Walk Test
• Young Adults.

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