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. Author manuscript; available in PMC: 2009 Oct 20.
Published in final edited form as: J Biomech. 2008 Aug 30;41(14):3060–3065. doi: 10.1016/j.jbiomech.2008.06.037

TABLE I.

Intra-abdominal (IAP) Pressure Recordings from Previous Research

Author IAP Valsalva-Supine (kPa) IAP Valsalva-Standing (kPa)
Sugrue (1995) 4.22 –
Howard et al. (2000) – 10.89
Hemat (2003) – 8 – 10.67
Cobb et al. (2005) 5.29 (sitting) 8.65
Brandt et al. (2006) – 9.74
Average IAP 4.76 9.65
Values used in this study 4.5† ★
†

Takes into account the slightly higher IAP contribution produced by the sitting position in Cobb et al. (2005).

★

Patient was supine when performing the valsalva maneuver, so standing values were not required.