background: scuba divers work in high pressure conditions which may cause some changes in physiological status to adapt to this situation. in this study, the carotid intima-media thickness (cimt) was assessed in divers as a risk factor of cerebrovascular and cardiovascular disorders. methods: this historical cohort study was performed on 16 male professional scuba divers as case group and 30 he...

Recreational diving with self-contained underwater breathing apparatus (scuba) has grown in popularity. Asthma is a common disease with a similar prevalence in divers as in the general population. Due to theoretical concern about an increased risk for pulmonary barotrauma and decompression sickness in asthmatic divers, in the past the approach to asthmatic diver candidates was very conservative...

We present an algorithm for underwater robots to visually detect and track human motion. Our objective is to enable human-robot interaction by allowing a robot to follow behind a human moving in (up to) six degrees of freedom. In particular, we have developed a system to allow a robot to detect, track and follow a scuba diver by using frequencydomain detection of biological motion patterns. The...

The features of respiratory noises and fins for open-circuit scuba divers, indicating a multipole character emission, are specified in cameral conditions. It demonstrates possibility to detect low-frequency components with pressure gradient sensor near field. A estimating the rate an diver is demonstrated at distances up 100 m real sea. gives opportunity bearing (time delay pair hydrophones) by...

The modern scuba diver has become a slave of the buoyancy compensator. Throughout scuba diving history the diver has had to cope with variations in buoyancy due to suit compression and air usage. During the past five years scores of buoyancy compensation units have appeared on the market. Frequently manufacturers and instructors indicate that the buoyancy compensator is extremely useful for aid...