Healing of the Torn Anterior Horn of Rabbit Medial Meniscus to Bone after Transtibial Pull-Out Repair and Autologous Platelet-Rich Plasma Gel Injection.

Objectives: The transtibial pull-out repair (TP) is a relatively new method for treating meniscal root tear; however, the clinical evaluation of its healing effect remains controversial. Due to ethical constraints and limitations of imaging techniques in humans, here we dynamically observe the healing effects of TP and TP with platelet-rich plasma gel (PRG) at the histological level using an animal model.

Methods: Platelet-rich plasma (PRP) and PRG of rabbits were prepared.

[Effects of self-generated LBNP training on cardiovascular function and lower body negative pressure (LBNP) tolerance].

Objective: To explore the changes of cardiac function and lower body negative pressure tolerance after self-generated Lower Body Negative Pressure device training and provide experimental evidences for its appliance.

Method: Twelve healthy male subjects were randomly divided into two groups, and received training on two conditions for entirely closing the valve or opening to -30 mmHg of peak LBNP separately. The group A was trained for five days and three minutes per day.

[Effects of repeated lower g exposures on high-G induced memory and balance changes in rats].

Objective: To study the protective effects of repeated +4 Gz/3 min exposures on memory and balance changes induced by +10 Gz/5 min exposure in rats.

Method: 32 male SD rats were randomly divided into 4 groups: control group (C) ; +10 Gz/5 min group (10 Gz); 3 d training group (3 d) ; 5 d training (5 d) group (exposed to +4 Gz/3 min per day for 3 or 5 days before +10 Gz/5 min exposure). Changes of memory and balance in rats of all the 4 groups were observed after +10 Gz/5 min exposure.

[Effects of +Gz exposure time on memory and behavior in rats].

Objective: To explore the effect of +Gz exposure time on memory and behavior in rats.

Method: Twenty-four male SD rats were randomly divided into control group (A), +10 Gz/3 min group (B) and +10 Gz/5 min group (C). Rats in group A and B were exposed to +10 Gz for 3 min or 5 min respectively.

[Development and application of self-powered short arm human centrifuge].

Objective: To present the development and application of a self-powered short arm human centrifuge.

Method: Self-powered short arm human centrifuge consisted of human power, adjustable resistance trig, short arm and supporting construction parts. It was driven by human power.

[Effects of lower body negative pressure in the first and last week during 21 d head-down bed rest on orthostatic tolerance and cardiac function].

Objective: To investigate the changes of orthostatic tolerance and cardiac function during 21 d head-down tilt (HDT) bed rest and effect of lower body negative pressure (LBNP) in the first and the last weeks in humans.

Method: Twelve healthy male volunteers were exposed to -6 degrees HDT bed rest for 21 d. Six subjects received -30 mmHg LBNP sessions for 1 h/d from the 1st to the 7th day and from the 15th to the 21st day of the HDT, and the other six who did not receive LBNP served as control.