Quantitative effects of respiration on venous return during single knee extension-flexion

International Journal of Sports Medicine
Takuya OsadaT Shimomitsu

Abstract

Respiration and the muscle pump play major roles in increasing venous return. However, the relative contribution of each of these factors remains unclear. The present study investigates the quantitative effects of interaction between respiration and the muscle pump on femoral venous blood flow (FVBF) during a single voluntary knee extension-flexion (KEF) using duplex-Doppler ultrasound. During various respiration modes, which consisted of arrested respiration, normal respiration and deep respiration (inspiration or expiration), eight subjects performed a supine one-legged voluntary KEF. FVBF was measured during respiration only (Protocol A) and during KEF synchronized with respiration (Protocol B). The difference between FVBF values obtained in Protocol B and Protocol A was defined as DeltaFVBF. When KEF was synchronized with normal or deep respiration, FVBF with inspiration was significantly lower than that with expiration. However, DeltaFVBF was significantly higher with inspiration than with expiration during deep respiration but was not significant during normal respiration. Furthermore, DeltaFVBF was significantly higher at both normal and deep respiration than at arrested respiration. The effects upon the venous return du...Continue Reading

Citations

Feb 1, 2011·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Takuya OsadaToshihito Katsumura
Dec 4, 2003·Journal of Physiological Anthropology and Applied Human Science·Takuya OsadaTeruichi Shimomitsu
Jun 3, 2009·Clinical Physiology and Functional Imaging·Takuya Osada, Göran Rådegran
Mar 31, 2016·Journal of Clinical Ultrasound : JCU·Hooman Hossein-NejadFaezeh Ahmadi
Jan 27, 2015·Clinical Physiology and Functional Imaging·Aki OtsukiMayumi Kuno-Mizumura
Nov 25, 2003·The Australian Journal of Physiotherapy·Oh-Yun KwonChung-Hwi Yi
Jul 15, 2006·The Journal of Physiological Sciences : JPS·Takuya Osada, Göran Rådegran
Jul 6, 2004·Medicine and Science in Sports and Exercise·Takuya Osada
Aug 20, 2005·The Journal of Experimental Biology·Suzanne L MunnsJames W Hicks
Jul 28, 2021·Journal of Sport and Health Science·Shane F O'RiordanJames R Broatch

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