Objective To summarize the researches on sustained acceleration physiology from 2007 to 2016 and provide references to conduct Chinese pilots′ human centrifuge training , reduce G-induced loss of consciousness (G-LOC) and ensure flight safety. Literature resource and selection Abstracts in this field published in Aerospace Medical Association (AsMA) annual scientific meeting from 2007 to 2016. Literature quotation Forty abstracts on sustained acceleration physiology published in the AsMA annual scientific meeting from 2007 to 2016 were cited. Literature synthesis The important contents of abstracts on sustained acceleration physiology published in the AsMA annual scientific meeting from 2007 to 2016 were analyzed.Research progress on G-protective methods ,high-G training ,G-LOC influence and pilots′ physiology training were mainly reviewed. Anti-G effect of anti-G suit ,generality and training injury of high G centrifuge training ,threat to flight safety induced by G-LOC ,as well as neck muscle training ,anti-G straining maneuver training and training effect demands in physiological training of pilots were mainly reviewed.The suggestions on the sustained acceleration research were proposed on the basis of the related foreign research analysis. Conclusions Some advances have been obtained in foreign researches on sustained acceleration.It is of great importance for improving our aviation medical research level to strength the related scientific researches on preventive equipment of sustained acceleration ,pursue the forewarning and recovery of pilots′ G-LOC , promote human centrifuge training methods and effectiveness research.

Objective To summarize the researches on sustained acceleration physiology from 2007 to 2016 and provide references to conduct Chinese pilots′ human centrifuge training , reduce G-induced loss of consciousness (G-LOC) and ensure flight safety. Literature resource and selection Abstracts in this field published in Aerospace Medical Association (AsMA) annual scientific meeting from 2007 to 2016. Literature quotation Forty abstracts on sustained acceleration physiology published in the AsMA annual scientific meeting from 2007 to 2016 were cited. Literature synthesis The important contents of abstracts on sustained acceleration physiology published in the AsMA annual scientific meeting from 2007 to 2016 were analyzed.Research progress on G-protective methods ,high-G training ,G-LOC influence and pilots′ physiology training were mainly reviewed. Anti-G effect of anti-G suit ,generality and training injury of high G centrifuge training ,threat to flight safety induced by G-LOC ,as well as neck muscle training ,anti-G straining maneuver training and training effect demands in physiological training of pilots were mainly reviewed.The suggestions on the sustained acceleration research were proposed on the basis of the related foreign research analysis. Conclusions Some advances have been obtained in foreign researches on sustained acceleration.It is of great importance for improving our aviation medical research level to strength the related scientific researches on preventive equipment of sustained acceleration ,pursue the forewarning and recovery of pilots′ G-LOC , promote human centrifuge training methods and effectiveness research.

Objective System of pressure breathing for +Gz (PBG) has been incorporated into service in the high performance fighter aircraft,but there were significant differences among PBG pressure schedules used in different countries.The purpose of this study was to define an optimal pressure schedule in PBG system.Method Five male subjects wearing GZ-2 anti-G suit and medium-sized bladder vest,plus PBG with 1.6,2.4,and 3.2 kPa/G pressure schedules,respectively,were exposed to rapid onset (3.0 G/s) centrifuge +Gz runs.+Gz protection of PBG with each of the three pressure schedules were measured and the subjective ratings were collected.Result The +Gz protection afforded by PBG with 1.60,2.40,and 3.20 kPa/G pressure schedules were 2.00±0.31,2.54±0.32,and 2.44±0.31 G,respectively.Subjective ratings showed that the PBG with 2.40 kPa/G pressure schedule was better than the other two.Conclusion Our data suggest that a PBG pressure schedule of 2.4 kPa/G in PBG system is optimal.It not only assures the anti-G performance of PBG,but also reduces its side effects.