Masturberen

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soulreaver
Super Heavy Weight
2004/05/14 12:55:19 (permalink)
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Masturberen

LOL, kon hem jullie toch niet onthouden super blij

Oftewel rukken met die handel mannen super blij


Endocrine effects of masturbation in men.

Purvis K, Landgren BM, Cekan Z, Diczfalusy E.

The levels of pregnenolone, dehydroepiandrosterone (DHA), androstenedione, testosterone, dihydrotestosterone (DHT), oestrone, oestradiol, cortisol and luteinizing hormone (LH) were measured in the peripheral plasma of a group of young, apparently healthy males before and after masturbation. The same steroids were also determined in a control study, in which the psychological antipation of masturbation was encouraged, but the physical act was not carried out. The plasma levels of all steroids were significantly increased after masturbation, whereas steroid levels remained unchanged in the control study. The most marked changes after masturbation were observed in pregnenolone and DHA levels. No alterations were observed in the plasma levels of LH. Both before and after masturbation plasma levels of testosterone were significantly correlated to those of DHT and oestradiol, but not to those of the other steroids studied. On the other hand, cortisol levels were significantly correlated to those of pregnenolone, DHA, androstenedione and oestrone. In the same subjects, the levels of pregnenolone, DHA, androstenedione, testosterone and DHT, androstenedione and oestrone. In the same subjects, the levels of pregnenolone, DHA, androstenedione, testosterone and DHT in seminal plasma were also estimated; they were all significantly correlated to the levels of the corresponding steroid in the systemic blood withdrawn both before and after masturbation. As a practical consequence, the results indicate that whenever both blood and semen are analysed, blood sampling must precede semen collection.
#1

51 Replies Related Threads

    Scighera
    Mr. Gluteus
    RE: Masturberen 2004/05/14 12:57:55 (permalink)
    0
    super blij

    dan gaan we vrolijk verder [sm=lolbord2.gif]
    #2
    Rookie2Years
    Heavy Weight
    RE: Masturberen 2004/05/14 13:01:57 (permalink)
    0
    Tsjong.. dass ff ander nieuws....

    Iedereen hier op dit forum straks op de handmatige variant... en straks
    allemaal Repetive Strain Injurie (oftwel RSI) ... .hahah
    maar wel geinig onder zoek knipoog
    #3
    Bloempje
    Little Nasty Girl
    RE: Masturberen 2004/05/14 13:02:26 (permalink)
    0
    das toch geen nieuws?[sm=mad.gif]
    #4
    Rookie2Years
    Heavy Weight
    RE: Masturberen 2004/05/14 13:03:59 (permalink)
    0


    Jep.. das misschien geen nieuws. maar wel handig om te wetennn.. knipoog
    #5
    soulreaver
    Super Heavy Weight
    RE: Masturberen 2004/05/14 13:12:36 (permalink)
    0
    het werd wellis geroepen door sommigen dat masturberen zou zorgen voor verlaging van je test. productie en andere hormonen. het tegendeel is dus waar super blij
    #6
    Espi
    meten = weten!
    RE: Masturberen 2004/05/14 13:17:20 (permalink)
    0
    Enne SR wat betekent dit voor de vrouwen, moeten we ook meer aan het edele handwerk gaan doen (of meer batterijtjes verslijten van de speelapparaatjes)?
    #7
    Bloempje
    Little Nasty Girl
    RE: Masturberen 2004/05/14 13:23:06 (permalink)
    0
    bedoelde meer dat t geen nieuw nieuw is... ik wist dat al.... [^]



    ORIGINAL: Rookie2Years



    Jep.. das misschien geen nieuws. maar wel handig om te wetennn.. knipoog
    #8
    soulreaver
    Super Heavy Weight
    RE: Masturberen 2004/05/14 13:23:59 (permalink)
    0
    ORIGINAL: Esperantistino

    Enne SR wat betekent dit voor de vrouwen, moeten we ook meer aan het edele handwerk gaan doen (of meer batterijtjes verslijten van de speelapparaatjes)?


    ik was op zoek naar studies mbt. lh en hcg, maar kwam deze per ongeluk tegen en ik dacht die kan ik jullie niet onthouden.. bij vrouwen geen idee eigenlijk??
    #9
    Espi
    meten = weten!
    RE: Masturberen 2004/05/14 13:24:36 (permalink)
    0
    zoek maar eens door dan.. blij
    #10
    Hans
    Intense MudaFukin Pimp
    RE: Masturberen 2004/05/14 13:25:24 (permalink)
    0
    ORIGINAL: Esperantistino

    Enne SR wat betekent dit voor de vrouwen, moeten we ook meer aan het edele handwerk gaan doen (of meer batterijtjes verslijten van de speelapparaatjes)?


    Geen van beide. Jullie moeten de mannen helpen wanneer hun armpjes het niet meer volhouden!

    Lijkt me duidelijk...
    #11
    Bloempje
    Little Nasty Girl
    RE: Masturberen 2004/05/14 13:28:26 (permalink)
    0
    haha of t nuttig is voor ons of niet...... gewoon doen Espi

    krijg je gespierde armen van af en toe wel van arm wisselen voor gelijke verhoudingen[sm=aanbid.gif]
    #12
    Espi
    meten = weten!
    RE: Masturberen 2004/05/14 13:32:46 (permalink)
    0
    : Neurosci Biobehav Rev. 2002 Jan;26(1):31-44. Related Articles, Links

    Orgasm-induced prolactin secretion: feedback control of sexual drive?

    Kruger TH, Haake P, Hartmann U, Schedlowski M, Exton MS.

    Department of Medical Psychology, University of Essen, 45122 Essen, Germany.

    Recent studies from our laboratory have investigated the hormonal response to various forms of sexual stimulation, including film, masturbation, and coitus in both men and women. This series of studies clearly demonstrated that plasma prolactin (PRL) concentrations are substantially increased for over 1h following orgasm (masturbation and coitus conditions) in both men and women, but unchanged following sexual arousal without orgasm. Here we discuss evidence suggesting that the PRL response to orgasm may play an important role in the control of acute sexual arousal following orgasm. Supporting this position, chronic elevations of PRL (hyperprolactinemia) produce pronounced reductions in animal sexual activity, and significant reduction of libido and gonadal function in both men and women. These data suggest that PRL may represent a peripheral regulatory factor for reproductive function, and/or a feedback mechanism that signals CNS centres controlling sexual arousal and behaviour. Thus, we propose a theoretical model of the role of PRL as a neuroendocrine reproductive reflex.

    (word je libido dus minder als je vaak masturbeert?)

    : J Sex Marital Ther. 2000 Jul-Sep;26(3):269-83. Related Articles, Links

    Controlled studies on women presenting with sexual drive disorder: I. Endocrine status.

    Riley A, Riley E.

    Lancashire Postgraduate School of Medicine and Health, University of Central Lancashire, Preston, United Kingdom. alanriley@doctors.org

    A single mid-cycle blood sample was obtained from 15 premenopausal female patients presenting with lifelong absence of sexual drive and from a control group of women with intact sexual drive. Serum levels of testosterone, 5-dihydrotestosterone (5-DHT), 17 beta oestradiol, sex hormone binding globulin, and prolactin were measured and indices of free testosterone and 5-DHT were derived. During the menstrual cycle in which the blood samples were obtained, the study subjects kept a diary of their sexual desire and activities. The only endocrine parameter that is significantly different between the two groups is free testosterone, which is lower in the patients than in the control women. Associations between endocrine parameters and indices of sexual behavior were examined. In the control group, average daily sexual thoughts correlates positively with total testosterone, free testosterone index, and free 5-DHT. Feeling of "need for sex" correlates positively with free 5-DHT index and free testosterone index. Experience of sexual thoughts correlates with need for sex, and average frequency of masturbation correlates negatively with age. In both groups, average coital frequency correlates with free testosterone index.

    PMID: 10929575 [PubMed - indexed for MEDLINE]

    (vrij testosteron was dus erg laag in vrouwen zonder libido... hmmm in de tijden dat mijn PCOS het ergste was, had ik daar ook last van.. volgens mijn vrindje was het doordat mijn gebonden testosteron hoog was en het vrije verlaagd werd door drop!!! is in NL een beruchte oorzaak voor laag testosteron niveau bij vrouwen EN mannen).

    Psychoneuroendocrinology. 2000 Feb;25(2):187-99. Related Articles, Links

    Neuroendocrine response to film-induced sexual arousal in men and women.

    Exton NG, Truong TC, Exton MS, Wingenfeld SA, Leygraf N, Saller B, Hartmann U, Schedlowski M.

    School of Psychology, University of New England, Armidale, Australia.

    The psychoneuroendocrine responses to sexual arousal have not been clearly established in humans. However, we have demonstrated previously that masturbation-induced orgasm stimulates cardiovascular activity and induces increases in catecholamines and prolactin in blood of both males and females. We presently investigated the role of orgasm in producing these effects. Therefore, in this study parallel analysis of prolactin, adrenaline, noradrenaline, and cortisol concentrations, together with cardiovascular variables of systolic/diastolic blood pressure and heart rate were undertaken during film-induced sexual arousal in nine healthy adult men and nine healthy adult women. Blood was drawn continuously via an indwelling cannula and connected tubing system passed through a mini-pump. In parallel, the cardiovascular parameters were recorded continuously via a computerised finger-cuff sensor. Subjective sexual arousal increased significantly in both men and women during the erotic film, with sexual arousal eliciting an increase in blood pressure in both males and females, and plasma noradrenaline in females only. In contrast, adrenaline, cortisol and prolactin levels were unaffected by sexual arousal. These data further consolidate the role of sympathetic activation in sexual arousal processes. Furthermore, they demonstrate that increases in plasma prolactin during sexual stimulation are orgasm-dependent, suggesting that prolactin may regulate a negative-feedback sexual-satiation mechanism.

    Publication Types:
    Clinical Trial

    PMID: 10674282 [PubMed - indexed for MEDLINE]

    (weer zelfde resultaat.. te veel masturberen geeft negatief resultaat?)

    Psychosom Med. 1999 May-Jun;61(3):280-9. Related Articles, Links

    Comment in:
    Psychosom Med. 1999 May-Jun;61(3):290-1.

    Cardiovascular and endocrine alterations after masturbation-induced orgasm in women.

    Exton MS, Bindert A, Kruger T, Scheller F, Hartmann U, Schedlowski M.

    Department of Medical Psychology, University Clinic Essen, Germany.

    OBJECTIVE: The present study investigated the cardiovascular, genital, and endocrine changes in women after masturbation-induced orgasm because the neuroendocrine response to sexual arousal in humans is equivocal. METHODS: Healthy women (N = 10) completed an experimental session, in which a documentary film was observed for 20 minutes, followed by a pornographic film for 20 minutes, and another documentary for an additional 20 minutes. Subjects also participated in a control session, in which participants watched a documentary film for 60 minutes. After subjects had watched the pornographic film for 10 minutes in the experimental session, they were asked to masturbate until orgasm. Cardiovascular (heart rate and blood pressure) and genital (vaginal pulse amplitude) parameters were monitored continuously throughout testing. Furthermore, blood was drawn continuously for analysis of plasma concentrations of adrenaline, noradrenaline, cortisol, prolactin, luteinizing hormone (LH), beta-endorphin, follicle-stimulating hormone (FSH), testosterone, progesterone, and estradiol. RESULTS: Orgasm induced elevations in cardiovascular parameters and levels of plasma adrenaline and noradrenaline. Plasma prolactin substantially increased after orgasm, remained elevated over the remainder of the session, and was still raised 60 minutes after sexual arousal. In addition, sexual arousal also produced small increases in plasma LH and testosterone concentrations. In contrast, plasma concentrations of cortisol, FSH, beta-endorphin, progesterone, and estradiol were unaffected by orgasm. CONCLUSIONS: Sexual arousal and orgasm produce a distinct pattern of neuroendocrine alterations in women, primarily inducing a long-lasting elevation in plasma prolactin concentrations. These results concur with those observed in men, suggesting that prolactin is an endocrine marker of sexual arousal and orgasm.

    Publication Types:
    Clinical Trial

    PMID: 10367606 [PubMed - indexed for MEDLINE]

    (case closed? geringe invloed op testosteron, grote invloed op prolactine)
    #13
    soulreaver
    Super Heavy Weight
    RE: Masturberen 2004/05/14 13:40:41 (permalink)
    0
    zo kort en bondig heb ik je nog nooit iets horen zeggen :p
    < Message edited by soulreaver -- 14/5/2004 14:14:21 >
    #14
    HAKKIE
    Ouwe IJzervreter
    RE: Masturberen 2004/05/14 13:40:56 (permalink)
    0
    ORIGINAL: Hans

    ORIGINAL: Esperantistino

    Enne SR wat betekent dit voor de vrouwen, moeten we ook meer aan het edele handwerk gaan doen (of meer batterijtjes verslijten van de speelapparaatjes)?


    Geen van beide. Jullie moeten de mannen helpen wanneer hun armpjes het niet meer volhouden!

    Lijkt me duidelijk...


    Hahaha

    Zeer duidelijk hans!
    #15
    Marcus
    Natural born chiller
    RE: Masturberen 2004/05/14 13:53:32 (permalink)
    0
    zo kort en bondig heb ik je nog nooit [edit] iets horen zeggen


    LOL

    bedoelde meer dat t geen nieuw nieuw is... ik wist dat al....


    Ja, maar dit is een van die dingen die je wist die ook waar blijken te zijn :p


    Goeie studie Soulreaver.
    Nou ja, dan moet het maar he super blij
    #16
    MaxMuscle
    Super Heavy Weight
    RE: Masturberen 2004/05/14 13:59:35 (permalink)
    0
    Wel oppassen mannen voor je het loop je straks binnen het jaar ook nog eens met twee tennisellebogensuper blij
    #17
    ErEf
    Growing pains BFF AD
    RE: Masturberen 2004/05/14 14:01:07 (permalink)
    0
    ORIGINAL: Bloempje

    bedoelde meer dat t geen nieuw nieuw is... ik wist dat al.... [^]



    ORIGINAL: Rookie2Years



    Jep.. das misschien geen nieuws. maar wel handig om te wetennn.. knipoog

    en waarom zei je dat dan niet super blij
    #18
    Frewak
    creative brainstormer
    RE: Masturberen 2004/05/14 14:01:24 (permalink)
    0
    #19
    ErEf
    Growing pains BFF AD
    RE: Masturberen 2004/05/14 14:05:24 (permalink)
    0
    ff rukke voor je naar de gym gaat super blij
    #20
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