8
|
Sakakibara R, Tsunoyama K, Hosoi H, Takahashi O, Sugiyama M, Kishi M, Ogawa E, Terada H, Uchiyama T, Yamanishi T. Influence of Body Position on Defecation in Humans. Low Urin Tract Symptoms 2010; 2:16-21. [PMID: 26676214 DOI: 10.1111/j.1757-5672.2009.00057.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To compare three positions for defecation by measuring abdominal pressure and the anorectal angle simultaneously. METHODS We recruited six healthy volunteers. The videomanometric measures included simultaneous fluoroscopic images, abdominal pressures, subtracted rectal pressures and anal sphincter pressures. Three positions were used: sitting, sitting with the hip flexing at 60 ° with respect to the rest of the body, and squatting with the hip flexing at 22.5 ° with respect to the rest of the body. RESULTS Basal abdominal pressure before defecation on hip-flex sitting was lower than that with normal sitting, although the difference did not reach statistical significance. Basal abdominal pressure before defecation on squatting (26 cmH2 O) was lower than that with normal sitting (P < 0.01). Abdominal pressure increase (strain) on hip-flex sitting was lower than that with normal sitting, although this difference did not reach statistical significance. Similarly, the abdominal pressure increase on squatting was smaller than that with normal sitting, and yet the difference did not reach statistical significance. The rectoanal angle on defecation on hip-flex sitting did not differ from that with normal sitting. The rectoanal angle on defecation on squatting (126 °) was larger than that with normal sitting (100 °) (P < 0.05), and was also larger than that with hip-flex sitting (99 °) (P < 0.01). CONCLUSION The results of the present study suggest that the greater the hip flexion achieved by squatting, the straighter the rectoanal canal will be, and accordingly, less strain will be required for defecation.
Collapse
Affiliation(s)
- Ryuji Sakakibara
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Kuniko Tsunoyama
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Hiroyasu Hosoi
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Osamu Takahashi
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Megumi Sugiyama
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Masahiko Kishi
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Emina Ogawa
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Hitoshi Terada
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Tomoyuki Uchiyama
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| | - Tomonori Yamanishi
- Department of Internal Medicine, Division of Neurology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Urology, Tokyo Women's Medical University, Tokyo, JapanAishin Seiki Inc., Tokyo, JapanClinical Physiology Unit, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Radiology, Sakura Medical Center, Toho University, Sakura, JapanDepartment of Neurology, Chiba University, Chiba, JapanDepartment of Urology, Dokkyo Medical College, Tochigi, Japan
| |
Collapse
|