coach_izzy
Contributor
Good point Cameron. However, considering the origen of the increase in cardiac and respiratory activity, I do think that training and experience have a FAR more significant role in gas consumption than physical fitness as the OP addressed it.
A diver going against current and diver experiencing entanglement will both probably experience elevated cardiovascular activity. The entangled diver however, starts with a psychological reaction, that turns into a hormonal response, that translates into a physical response. How well a diver is prepared to cope with the situation will have a much higher likelihood of experiencing less stress, keep his physical response under control, and then most likely, move on. Put a new diver under the same conditions and we'll see a far more pronounced physical response, regardless of the levels of fitness.
The effects of epinephrin cause an increase in CV response, yes that's true, but also bring certain supresive responses that are not found with responses to physical demands only.
The point that you also brought up and liked very much was how physical the stress hormones can be, and how a conditioned body will cope with them a whole lot better than somebody with low levels of fitness. An unfit diver under a new type of stress and the effects of the powerful epinephrin, has a very high chance of experiencing cardiac failure, regardless of how experienced he can be, versus a physically fit diver, who can better tolerate the "fight or flight" response and its physical responses.
Thanks again Cameron. It's good to see you in the board again. I do not know if it's you who has been absent or it has been me. Either way, your contributions are always intelligent and very much appreciated. Take care and happy diving.
A diver going against current and diver experiencing entanglement will both probably experience elevated cardiovascular activity. The entangled diver however, starts with a psychological reaction, that turns into a hormonal response, that translates into a physical response. How well a diver is prepared to cope with the situation will have a much higher likelihood of experiencing less stress, keep his physical response under control, and then most likely, move on. Put a new diver under the same conditions and we'll see a far more pronounced physical response, regardless of the levels of fitness.
The effects of epinephrin cause an increase in CV response, yes that's true, but also bring certain supresive responses that are not found with responses to physical demands only.
The point that you also brought up and liked very much was how physical the stress hormones can be, and how a conditioned body will cope with them a whole lot better than somebody with low levels of fitness. An unfit diver under a new type of stress and the effects of the powerful epinephrin, has a very high chance of experiencing cardiac failure, regardless of how experienced he can be, versus a physically fit diver, who can better tolerate the "fight or flight" response and its physical responses.
Thanks again Cameron. It's good to see you in the board again. I do not know if it's you who has been absent or it has been me. Either way, your contributions are always intelligent and very much appreciated. Take care and happy diving.