Blacking Out (Please Help)

[JackRabbit]

Whenever I take a lesson, I always black out (there's sort of a black haze in my feild of vision) after hitting for 10-20 minutes. This never happens in match play, or other practice sessions. I am in very good shape, so I do not think it is exhaustion. Does anyone have any similar experiences or know how to treat this?

I have a couple theories:

1. Concentrating to hard on the ball
2. Hitting the ball to hard (I have a tendency to hit at 90% of my full speed for every ball during lessons)
3. Not relaxing

Any help would be GREATLY appreciated.

[wyutani]

not enuf vitamin A's mate'. eat more caroots....:cool: and maybe you didnt get enuf sleep or glaring at the comp for a whole day. cheers!:eek:

[scotus]

It could be that you are sprinting more during lessons (i.e., drills) than you do in match or practice situations.

My case may not be similar at all to your case, but I used to have the feeling of blacking out when playing matches, but I thought it strage because I regularly run 3 miles under 20 minutes.

So one day I started practicing sprints, and lo and behold, I found out that even though my cardio was good enough to do mid-distance running, it didn't handle sprints too well. I sprint extremely fast, but heart and lungs weren't able to handle it.

So I just focused on increasing sprinting workload little by little, and it took care of that problem. But even now, if I let myself get out of shape and come back to playing sports, I have to practice sprinting.

Also, you might want to get a blood work done and see if everything checks out okay.

[jackson vile]

Sounds like you are out of shape and may have realy high blood pressure.

Also if you have recently moved to a higher altitude.

You should got to a doctor, some things that you can do yourself is to check your beats per min. and your blood pressure.

[Pomeranian]

That happened to me before, but never on a tennis court. I was told it was because of a sudden drop of blood pressure in my case. There are a number of indirect causes that are not directly related to the heart.

Maybe you aren't being properly hydrated or nutrioned. Do you drink plain water or do you have some sodium in your drinks? Practicing as hard as you say, on an empty stomach can be a possible cause for it.

Whether or not you are in good shape, this is not normal and is a sign your body needs something. In the first 10-20 minutes of a lesson seems very unusual. Did you tell your coach? Get it checked out by a real doctor.

[jaykay]

I have experienced this too... and I hv been told the cause is 'oxygen starvation' because of exhaustion. I used to experience this less often on the tennis court and more often during middle-distance or long distance races (running).
Perhaps you are underestimating yourself when you state that you are in pretty good condition... or perhaps not...

The comment on high/low blood pressure and altitude differences also has some merit.

Eitherways, it is best to check yourself out by a qualified doctor.

Good luck and stay healthy!

[jaykay]

It could be that you are sprinting more during lessons (i.e., drills) than you do in match or practice situations.

My case may not be similar at all to your case, but I used to have the feeling of blacking out when playing matches, but I thought it strage because I regularly run 3 miles under 20 minutes.

So one day I started practicing sprints, and lo and behold, I found out that even though my cardio was good enough to do mid-distance running, it didn't handle sprints too well. I sprint extremely fast, but heart and lungs weren't able to handle it.

So I just focused on increasing sprinting workload little by little, and it took care of that problem. But even now, if I let myself get out of shape and come back to playing sports, I have to practice sprinting.

Also, you might want to get a blood work done and see if everything checks out okay.

Listen to this man...

[andfor]

Whenever I take a lesson, I always black out (there's sort of a black haze in my Field of vision) after hitting for 10-20 minutes. This never happens in match play, or other practice sessions. I am in very good shape, so I do not think it is exhaustion. Does anyone have any similar experiences or know how to treat this?

I have a couple theories:

1. Concentrating to hard on the ball
2. Hitting the ball to hard (I have a tendency to hit at 90% of my full speed for every ball during lessons)
3. Not relaxing

Any help would be GREATLY appreciated.

If not relaxing is your problem do you know if you're breathing properly? I've heard of folks who hold their breath while the ball is in play. They did not even know they did it until someone point it out to them. Sounds weird and on some levels to simple. Have you thought about that and could your breathing be part of it?

Hope this helps. If not, try to increase your anaerobic threshold through sprints and weight training. Before that see a doctor first.

[JackRabbit]

Thanks to everybody. I am starting my sprint training today.

[andfor]

Thanks to everybody. I am starting my sprint training today.

Blacking out is not a good sign. See a doctor before you increase your training levels. We don't want your next training session to be one that puts you in the hospital or worse. Let us know how things go.

[Saito]

I usually experience that when I push myself too hard and stress alot, meaning I'm not resting or eating on my normal training schedule due to lack of time or whatnot and school is adding more pressure (college and tennis combined is tough). Watch your diet as well, because like some said above your blood pressure could be a bit high.