PDA

View Full Version : Left Handedness and Combat



Angela
22-02-19, 19:34
See:

https://www.biorxiv.org/content/10.1101/555912v2

"Left-handedness is a costly, sexually dimorphic trait found at low frequencies in all human populations. How the handedness polymorphism is maintained is unclear. The fighting hypothesis argues that left-handed men have a negative frequency-dependent advantage in fighting giving them a selective advantage. In support of this, many studies have found that left-handed men are overrepresented in combat sports, but studies typically find no difference in fighting success between left and right-handed fighters. We studied over 9800 professional boxers and mixed martial arts fighters of varying abilities in three of the largest samples to test this hypothesis to date, finding robust evidence that left-handed fighters have greater fighting success. This held for both male and female fighters, and for both percentage of fights won and an objective measure of fighting ability. We replicated previous results showing the left-handed fighters are strongly overrepresented in professional combat sports, but left-handed fighters did not show greater variance in fighting ability, a hypothesis suggested in previous studies. Overall we find strong evidence consistent with the fighting hypothesis."

Farstar
22-02-19, 20:01
Fascinating (I am not left handed).

bicicleur
22-02-19, 21:31
I'm left handed and I play tennis.
It's an advantage.

Angela
22-02-19, 22:50
I'm left handed and I play tennis.
It's an advantage.

Are you left footed as well? My dad was predominantly left handed (except for writing) and also predominantly left footed, as in for soccer, but he could play leading with either foot and he always said it was a big advantage.

Salento
22-02-19, 22:53
EDITED
never mind.
Angela beat me on timing in asking a similar question.
Again LOL

....

Ygorcs
23-02-19, 01:46
Wow, I'm left-handed. Let me just tell my brother the results of this study, hold on just a minute... lol

Milan.M
23-02-19, 02:49
I am left handed,but playing football i use my right leg more,in martial arts however i can use them both and find no difference.

bicicleur
23-02-19, 12:55
Are you left footed as well? My dad was predominantly left handed (except for writing) and also predominantly left footed, as in for soccer, but he could play leading with either foot and he always said it was a big advantage.

I am completely left, handed and footed.
I am more muscular on my left side. I don't know whether this is the cause or the consequence of me being lefthanded.

Me and my wife are both lefthanded, but my children are all righthanded, allthough not 100 %.

Archetype0ne
23-02-19, 21:10
Plausible hypothesis on the paper. Consistent with some other sources I have read, including:

Several passages in the Bible describe tribe of Benjamin as being pugnacious (https://en.wikipedia.org/wiki/Militarism),[8] (https://en.wikipedia.org/wiki/Tribe_of_Benjamin#cite_note-Jewish_Encyclopedia-8) for example in the Song of Deborah (https://en.wikipedia.org/wiki/Deborah#The_Song_of_Deborah), and in descriptions where they are described as being taught to fight left handed (https://en.wikipedia.org/wiki/Left_handed), so as to be able to wrong foot their enemies (Judges 3:15-21 (https://www.biblica.com/bible/?osis=niv:Judges.3:15%E2%80%933:21), 20:16 (https://www.biblica.com/bible/?osis=niv:Judges.20:16%E2%80%9320:16), 1 Chronicles 12:2 (https://www.biblica.com/bible/?osis=niv:1_Chronicles.12:2%E2%80%9312:2)) and where they are portrayed as being brave and skilled archers (https://en.wikipedia.org/wiki/Archery) (1 Chronicles 8:40 (https://www.biblica.com/bible/?osis=niv:1_Chronicles.8:40%E2%80%938:40), 2 Chronicles 14:8 (https://www.biblica.com/bible/?osis=niv:2_Chronicles.14:8%E2%80%9314:8)).

G2ian
23-02-19, 22:17
I am completely left, handed and footed.
I am more muscular on my left side. I don't know whether this is the cause or the consequence of me being lefthanded.

Me and my wife are both lefthanded, but my children are all righthanded, allthough not 100 %.
I'm also left dominant but my right hand and foot are stronger when weightlifting. It's strange, left side is far more agile, usable but right side is stronger. It is known that my last name comes from people who served in kings Calvary for generations(likely Calvary archers as that was the dominant type in western Georgia) wonder if that legend holds any truth to it and how it would actually affect gene expression.

Regio X
24-02-19, 02:16
Humm... Both left-handed and right-handed use to play with right-handed, the majority. So, right-handed don't use to play with left-handed, making it more difficult for them?
I'm right-handed, but I naturally used my left leg for jumping in basketball. In soccer (not my first sport), it was the right leg. Left is stronger than the right though, while the right arm is stronger than the left.

Maciamo
24-02-19, 11:30
I am right handed, except for driving (I only use my left hand most of the time; the right one being used to change gears, I just let it rest on the side in standby). I learned to play racket sports (tennis, badminton, ping pong) with my left hand as well, just to see if I could, and to leave some chance to weaker opponents (like my wife lol).

bicicleur
24-02-19, 16:26
I am right handed, except for driving (I only use my left hand most of the time; the right one being used to change gears, I just let it rest on the side in standby). I learned to play racket sports (tennis, badminton, ping pong) with my left hand as well, just to see if I could, and to leave some chance to weaker opponents (like my wife lol).

I know some righthanded tennisplayers who, when the ball passes on their left out of reach, quickly change hand and hit lefthanded.
It happens so fast, you won't even notice.

bicicleur
24-02-19, 16:29
In the Greek phalanx, warriors operated side by side. They had a sword or a spear in their right hand, and in their left a shield to protect not themselves, but their comrade on their left side.
I wonder how a lefthanded would have fit in.

LABERIA
24-02-19, 17:49
I'm left handed and I play tennis.
It's an advantage.

Using the right hand/foot is the rule while using the left is the exception. When we play, fight, etc, we are used to face up with people who use the right and consequently our reflexes and a series of instinctive actions are used to these kinds of situations. When we face a person who uses the left, we find ourselves disoriented. For this it takes some time to get used to this anomalous situation. And certainly this favors the person who uses the left.

hrvclv
25-02-19, 03:12
Using the right hand/foot is the rule while using the left is the exception. When we play, fight, etc, we are used to face up with people who use the right and consequently our reflexes and a series of instinctive actions are used to these kinds of situations. When we face a person who uses the left, we find ourselves disoriented. For this it takes some time to get used to this anomalous situation. And certainly this favors the person who uses the left.

Yes. In, e.g, boxing, nine out of ten of your opponents will be right-handed, so you prepare accordingly. You are ill-prepared when you face the one left-handed boxer, with his "inverted guard". But that tenth boxer will have faced one left-handed boxer in ten, and nine right-handed boxers, so he'll be used to your tricks, and will have a definite advantage.

Ygorcs
25-02-19, 08:48
I'm also left dominant but my right hand and foot are stronger when weightlifting. It's strange, left side is far more agile, usable but right side is stronger. It is known that my last name comes from people who served in kings Calvary for generations(likely Calvary archers as that was the dominant type in western Georgia) wonder if that legend holds any truth to it and how it would actually affect gene expression.

It's the same with me. "Fine" and accurate movements are best done with the left hand and foot, but I feel like my right hand and feet are better at "coarse" movements related to sheer strength. I'm curious about what could explain that difference.

bicicleur
25-02-19, 09:43
It's the same with me. "Fine" and accurate movements are best done with the left hand and foot, but I feel like my right hand and feet are better at "coarse" movements related to sheer strength. I'm curious about what could explain that difference.

it's not the case with me
both movement controll and strength are better on my left side

Carlos
26-02-19, 14:37
I'm right-handed, I have a left-handed brother. All the force is from the left side. On the left side I have noticed the perception, I usually turn automatically when someone looks at me from behind and I always turn to the left side, sciatica, all the ills happen to me on the left side.

G2ian
27-02-19, 06:31
It's the same with me. "Fine" and accurate movements are best done with the left hand and foot, but I feel like my right hand and feet are better at "coarse" movements related to sheer strength. I'm curious about what could explain that difference.
At least I know I'm not the only freak out there =))

Angela
27-02-19, 06:53
My left hand (and arm) are almost useless. I'm completely right dominant, even though my father was left dominant.

When I'm doing "fine" work, like caligraphy or embroidery and needlepoint it doesn't matter, but when I'm cooking it would be nice to have a stronger left hand and arm. I used to really have trouble picking up heavy pots and cast iron pans with my left because it has so much less strength than my right. Working out at the gym has helped somewhat, but not completely. I do all the beating and folding, everything, with my right. Even when I'm kneading dough I can tell the right is getting more oomph, so I switch the dough. It's not optimal to be so right dominant.

Strangely, my feet and legs are more balanced. Never had a problem with unequal strength in my legs for ballet, although it didn't matter: my ankles were too delicate and I kept on spraining them. That was that.

I wonder why I never had a problem with piano? I guess it doesn't require much strength, but I would have thought it should have been hard for me to play an instrument where the left hand and the right hand are doing completely different things, but it wasn't at all.

The scientists really don't understand all of this, I guess.

I mean, if it isn't hereditary, then what causes it?

Regio X
28-02-19, 15:27
My left hand (and arm) are almost useless. I'm completely right dominant, even though my father was left dominant.

When I'm doing "fine" work, like caligraphy or embroidery and needlepoint it doesn't matter, but when I'm cooking it would be nice to have a stronger left hand and arm. I used to really have trouble picking up heavy pots and cast iron pans with my left because it has so much less strength than my right. Working out at the gym has helped somewhat, but not completely. I do all the beating and folding, everything, with my right. Even when I'm kneading dough I can tell the right is getting more oomph, so I switch the dough. It's not optimal to be so right dominant.

Strangely, my feet and legs are more balanced. Never had a problem with unequal strength in my legs for ballet, although it didn't matter: my ankles were too delicate and I kept on spraining them. That was that.

I wonder why I never had a problem with piano? I guess it doesn't require much strength, but I would have thought it should have been hard for me to play an instrument where the left hand and the right hand are doing completely different things, but it wasn't at all.I used to play the piano as well, however, my right hand was way better than the left.


The scientists really don't understand all of this, I guess.

I mean, if it isn't hereditary, then what causes it?Perhaps just training, especially early in life? And of course the will - or need - to do it, for any reason... See how people without arms learn to use the feet, for example.

Angela
28-02-19, 17:11
I used to play the piano as well, however, my right hand was way better than the left.

Perhaps just training, especially early in life? And of course the will - or need - to do it, for any reason... See how people without arms learn to use the feet, for example.

I really don't think that's it. People used to be severely penalized for using their left hands. My dad says he and his brothers were constantly being rapped on the knuckles until they learned to write with their right hands. One of my uncles had his hand tied behind his back. They used to do terrible things in schools.

I mean, yes, you can be forced to use a certain hand, but even as babies you can see the preference for one over the other.

Regio X
28-02-19, 17:44
I really don't think that's it. People used to be severely penalized for using their left hands. My dad says he and his brothers were constantly being rapped on the knuckles until they learned to write with their right hands. One of my uncles had his hand tied behind his back. They used to do terrible things in schools.

I mean, yes, you can be forced to use a certain hand, but even as babies you can see the preference for one over the other.Sorry. I just saw that my answer was disconnected to your question. I completely agree with what you said. Obviously there is an innate dominant side, in general.
In fact, I was referring to the ability of using the non dominant hand. It's just that some people seem to do it easier. In short, I'd guess it's in big part explained by trainning. That was the point. :)

Carlos
01-03-19, 13:53
When I learned to play the guitar I did not notice any difference between both sides, then I left it for other reasons. When I was a pre-adolescent I liked to play wrestling, body to body, I do not know where I got it because in my school that specialty was not taught but at recess I practiced it, I always won; although I'm not as strong as I look. And one day I realized that there was something else, that it was not only muscle strength when I grabbed another boy hand by hand in a very slight pull I turned him in the air and he was lying on the floor still holding my hand, he spent a week asking me how he had done it, I did not answer him, I had no idea how I did it, and it was more interesting not to answer. There is another type of strength that is not only muscular.

halfalp
03-03-19, 22:35
I am completely left, handed and footed.
I am more muscular on my left side. I don't know whether this is the cause or the consequence of me being lefthanded.

Me and my wife are both lefthanded, but my children are all righthanded, allthough not 100 %.

Not sure about that. I'm righthanded and my Left arm and leg are more muscular. It probably have to do with your dominant member wich is not related with being left or right handed.

Angela
03-03-19, 22:48
Uh...I thought there was only one. :)