Effects of vibration and resistance training on neuromuscular and hormonal measures  

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razg
 razg
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18/10/2018 6:07 am  

Effects of vibration and resistance training on neuromuscular and hormonal measures I found this interesting (if rather random):

quote:


Effects of vibration and resistance training on neuromuscular and hormonal measures.

Kvorning T, Bagger M, Caserotti P, Madsen K.

Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark, tkvorning@health.sdu.dk.

The aim was to study whether whole body vibration (WBV) combined with conventional resistance training (CRT) induces a higher increase in neuromuscular and hormonal measures compared with CRT or WBV, respectively. Twenty-eight young men were randomized in three groups; squat only (S), combination of WBV and squat (S+V) and WBV only (V). S+V performed six sets with eight repetitions with corresponding eight repetition maximum (RM) loads on the vibrating platform, whereas S and V performed the same protocol without WBV and resistance, respectively. Maximal isometric voluntary contraction (MVC) with electromyography (EMG) measurements during leg press, counter movement jump (CMJ) measures (mechanical performance) including jump height, mean power (P (mean)), peak power (P (peak)) and velocity at P (peak) (V (ppeak)) and acute hormonal responses to training sessions were measured before and after a 9-week training period. ANOVA showed no significant changes between the three groups after training in any neuromuscular variable measured [except P (mean, )S higher than V (P<0.05)]. However, applying t tests within each group revealed that MVC increased in S and S+V after training (P<0.05). Jump height, P (mean) and P (peak) increased only in S, concomitantly with increased V (ppeak) in all groups (P<0.05). Testosterone increased during training sessions in S and S+V (P<0.05). Growth hormone (GH) increased in all groups but S+V showed higher responses than S and V (P<0.05). Cortisol increased only in S+V (P<0.05). We conclude that combined WBV and CRT did not additionally increase MVC and mechanical performance compared with CRT alone. Furthermore, WBV alone did not increase MVC and mechanical performance in spite of increased GH.


Vibrating chair for increased GH anyone?

Logically I can only assume that the activation of a greater number of muscles (in order to stabilize) is what's causing the increase in GH.


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jboldman
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18/10/2018 6:54 am  

i was just reading that study. There are quite a few studies out there that demonstrate an improved performance and growth with specific kinds of vibration. very peculiar and hard to apply practically.

jb


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razg
 razg
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18/10/2018 7:53 am  
Posted by: jboldman
i was just reading that study. There are quite a few studies out there that demonstrate an improved performance and growth with specific kinds of vibration. very peculiar and hard to apply practically.

jb

When you think about it, GH is responsible for such a wide range of functions that it becomes nearly impossible to place a reason as for why the body would respond in such a way.

I'll be surprised when gyms start installing vibrating floors though


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guijr
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18/10/2018 8:42 am  
Posted by: razg
I'll be surprised when gyms start installing vibrating floors though

Bro as you know that thing is very expensive, but who knows?

"The medals don't mean anything and the glory doesn't last. It's all about your happiness. The rewards are going to come, but my happiness is just loving the sport and having fun performing" ~ Jackie Joyner Kersee.


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DocJ
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18/10/2018 9:39 am  

This wouldn't be advisable as prolonged exposure to vibration can inhibit the body's ability to maintain good proprioception.


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guijr
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18/10/2018 10:39 am  

Last year in Nashville during ACSM's annual meeting I trained with a kind of vibration dumbbell and on a arm-curl/triceps pressdowns vibration device, it was an interesting but not so enjoyable experience.

"The medals don't mean anything and the glory doesn't last. It's all about your happiness. The rewards are going to come, but my happiness is just loving the sport and having fun performing" ~ Jackie Joyner Kersee.


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headdoc
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18/10/2018 11:36 am  

for a minute there I thought you guys were actually going to take those ab vibrators seriously----my bad!

And we'll collect the moments one by one. I guess that's how the future's done. Feist, "Mushaboom", 2005


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guijr
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18/10/2018 12:15 pm  
Posted by: headdoc
for a minute there I thought you guys were actually going to take those ab vibrators seriously----my bad!

.

"The medals don't mean anything and the glory doesn't last. It's all about your happiness. The rewards are going to come, but my happiness is just loving the sport and having fun performing" ~ Jackie Joyner Kersee.


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kibrood
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18/10/2018 12:47 pm  

We have the Vibraflex 500 by Orthometrix at our club. It's a platform you stand on that has a variable frequency range of 0 - 30 Hz. For me, the most notable effect is the increased recovery between sets and post workout. One minute @ 24-27 Hz makes my legs feel like new. Almost everyone I've put on that thing says something to the effect, "My legs feel fresh."

Of course, there are trainers and clubs who bastardize the rehab applications this technology was designed for by having members do ridiculous exercises on the platform. One club tried to run a group fitness class with 30 of these things in one room. I guess they didn't realize that at 20+ Hz ONE platform is as loud as a jackhammer.

LOL!


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