Details

Autor(en) / Beteiligte

• Wu, Bin
• Wu, Ping
• Xue, Yue-Ying
• Liu, Xing-Hua
• Wang, Yan-Lei
• Jiang, Shi-Zhong

Titel

Repeated body position change training can improve human head-down tilt tolerance

Ist Teil von

• Zhongguo ying yong sheng li xue za zhi, 2008-02, Vol.24 (1), p.116

Ort / Verlag

China

Erscheinungsjahr

2008

Quelle

MEDLINE

Beschreibungen/Notizen

• To verify the hypothesis that repeated body position change training can improve human head-down tilt (HDT) tolerance. Six young healthy subjects were trained with repeated position change for 9 times and 11 days according to protocol of alternative head-down and head-up tilts, each time of training lasted for about 35 min. Their HDT tolerance (- 30 degrees/30 min) were determined before and after training. (1) Compared with the data before training, subjects' symptom scores during HDT test after training decreased significantly (6.00 +/- 3.79 vs 1.00 +/- 0.63, P < 0.05), magnitude of the decreased heart rate increased significantly (-0.6 +/- 2.5 vs -4.4 +/- 3.6, P < 0.01). (2) Before training, blood flow volume of internal jugular vein (IJV) during HDT decreased significantly and that of internal carotid artery (ICA) increased significantly at the beginning period of HDT compared with pre-HDT (P < 0.01), while blood flow volume of the common carotid artery (CCA) presented increasing trend. After training, th