plaid skrev:Ignoratios skrev:Ualmindeligt dumt svar til et seriøst topic plaid. Om end du redder den hen af vejen ved at argumentere for din implicite påstand. Din kilde tillægger jeg dog absolut ingen troværdighed.
Jeg har kun nogle relativt gamle studier der undersøger sammenhæng mellem sex og testosteron-niveau. Samtidig har jeg set artikler der med en evidensbaseret tilgang forsøger at forklarer sammenhængen mellen nogen af de ting jeg forsøger at forklare nedenunder. Det er via disse jeg har fundet størstedelen af studierne. Jeg ved dog ikke om jeg må linke direkte til artiklerne. Nedenstående er derfor kraftigt inspireret af disse.
1) J Zhejiang Univ Sci. 2003 Mar-Apr;4(2):236-40. A research on the relationship between ejaculation and serum testosterone level in men.
Abstract fra pubmed:
"The purpose of this study is to gain understanding of the relationship between ejaculation and serum testosterone level in men. The serum testosterone concentrations of 28 volunteers were investigated daily during abstinence periods after ejaculation for two phases. The authors found that the fluctuations of testosterone levels from the 2nd to 5th day of abstinence were minimal. On the 7th day of abstinence, however, a clear peak of serum testosterone appeared, reaching 145.7% of the baseline ( P < 0.01). No regular fluctuation was observed following continuous abstinence after the peak. Ejaculation is the precondition and beginning of the special periodic serum testosterone level variations, which would not occur without ejaculation. The results showed that ejaculation-caused variations were characterized by a peak on the 7th day of abstinence; and that the effective time of an ejaculation is 7 days minimum. These data are the first to document the phenomenon of the periodic change in serum testosterone level; the correlation between ejaculation and periodic change in the serum testosterone level, and the pattern and characteristics of the periodic change."
Kort refereret observerede studiet det højeste test-niveau efter 7 dage med afholdenhed fra ejakulation. Herefter begyndte en tilbagegang i test-niveauet, hvilket ifølge forskerne sandsynligvis skyldes en reduceret produktion af leutinizing hormone (negativ feedback fra det højere testosteron-niveau), som stimulerer testiklerne til at producere testosteron.
Alligevel giver ovenstående ikke nogen guidelines for, hvordan man bør anskue sex i forbindelse med træningen, da det overordnede billede er langt mere avanceret.
Eksempelvis viser studier også at sex medfører øget tyndhed blandt mænd, og øget tyndhed betyder igen højere produktion af testosteron. Andre igen viser at sexuel stimuli medfører højere testosteron produktion. Derudover viser andre studier at ejakulation har positiv effekt på immunforsvaret og kan øge restitutionsevnen ved hjælp af noget studiet referer til som killer cells. Alt i alt er det altså et utroligt avanceret emne, der på ingen måde kan besvares kort og entydigt. Samtidig tror jeg ikke at der er forsket specielt meget i området endnu, hvilket naturligvis bidrager til den manglende viden.
Edit: TheCzech var hurtigere ude med henvisning til studiet fra pubmed De fleste andre studier jeg svagt referer til er ligeledes fra pubmed.
J Sex Marital Ther. 2004 Jul-Sep;30(4):251-61. Slimness is associated with greater intercourse and lesser masturbation frequency.
"Abstract
I examined the relationship of recalled and diary recorded frequency of penile-vaginal intercourse (FSI), noncoital partnered sexual activity, and masturbation to measured waist and hip circumference in 120 healthy adults aged 19-38. Slimmer waist (in men and in the sexes combined) and slimmer hips (in men and women) were associated with greater FSI. Slimmer waist and hips were associated with rated importance of intercourse for men. Noncoital partnered sexual activity had a less consistent association with slimness. Slimmer waist and hips were associated with less masturbation (in men and in the sexes combined). I discuss the results in terms of differences between different sexual behaviors, attractiveness, emotional relatedness, physical sensitivity, sexual dysfunction, sociobiology, psychopharmacological aspects of excess fat and carbohydrate consumption, and implications for sex therapy."
flot du kan citere og oversætte! Du er verdens klogeste og det du siger er det rigtige.
Det er da rart, der er nogen der kan komme med nogle seriøse indlæg?