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At least 1,045 records · Page 58Linked to original sources
PubMed1984

The fertility of men with spinal injuries.

Application of a vibrator of 80 Hz and 2.5 mm amplitude to the lower surface of the glans penis caused ejaculation in less than 20 minutes (usually less than 3 minutes) in 48 of 81 men with spinal cord injuries (mostly complete) of more than 6 months duration. It failed in all the 19 of the 81 who lacked reflex hip flexion on scratching the soles of the feet, and in 14 others. It failed in 11 of 12 men with injuries of less than 6 months' duration. From 21 of 34 men for whom the vibrator failed, semen could be obtained by electroejaculation, which is just as successful within 6 months of injury as subsequently and may succeed even if reflex hip flexion is absent. Eleven pregnancies where the father had a complete or nearly complete spinal cord lesion are reported. Nine healthy children have been born.

Adult↗
PubMed1991

Semen retrieval in spinal cord injured men.

A fertility programme for spinal cord injured men has been in progress for nearly 5 years. Thirty eight men have been treated in this programme. Electroejaculation, vibration ejaculation and subcutaneous physostigmine have all been used successfully to obtain semen. Semen has been obtained from 21 of 24 men with a lesion at T8 or above, and from 4 of 11 men with lesions below T10. There have been 8 pregnancies from 6 couples.

Ejaculation↗
PubMed2005

Effects of repeated ejaculations on semen characteristics following spinal cord injury.

STUDY DESIGN: Prospective randomised controlled study. OBJECTIVE: To evaluate the effects of repeated ejaculation on semen characteristics following spinal cord injury (SCI) in a prospective randomised controlled study. SETTING: Spinal Research Centre, Stanmore, UK and Institute of Urology and Nephrology, London, UK. METHODS: A total of 74 patients with SCI above T10 were tested by vibro-ejaculation using a Ferticare penile vibrator (Multicept A/S Horsholm, Denmark) using a standardised technique. The ejaculate was examined according to WHO protocol. The successfully vibro-ejaculated subjects (n = 32) were randomised into a study group (n = 18) and a control group (n = 14). The patients in the study group vibro-ejaculated weekly for 3 months with semen analysis performed at baseline and then monthly. The control group vibro-ejaculated at baseline and at the end of the 3-month period. Two experienced observers performed the semen analysis independently. All measures were compared for statistical significance across the two groups at the beginning and at the end of the 3-month period using a two-tailed student t-test. Significance was determined at the 95% confidence interval (P < 0.05). RESULTS: In total, 10 patients in the study group and nine in the control group have completed the study so far. Six patients have dropped out of the study group and three from the control group for varied reasons. Two patients are currently enrolled in the study and control groups. The morphology and forward progression of sperm shows a statistically significant increase in the study group. The motility improves but is not statistically significant in the study group. No significant adverse effects were reported. CONCLUSIONS: We have shown in this unique randomised controlled study that repeated ejaculation does improve the sperm characteristics in SCI patients. It is suggested that SCI men should undergo repeated ejaculation for at least 3 months before trying intravaginal or intrauterine insemination techniques. If this fails then in vitro fertilisation can be used. This method promotes natural conception, is intimate and cost effective.

Adult↗
PubMed1978

Rise in female-initiated sexual activity at ovulation and its suppression by oral contraceptives.

This study was designed to test the hypothesis that women exhibit peaks of sexual activity at ovulation, as would be predicted from estrous effects in animals. Married women who used contraceptive devices other than oral contraceptives experienced a significant increase in their sexual behavior at the time of ovulation. This peak was statistically significant for all female-initiated behavior, including both autosexual and female-initiated heterosexual behavior, but was not present for male-initiated behavior except under certain conditions of contraceptive use. Previous failures to find an ovulatory peak may be due to use of measures of sexual behavior that are primarily determined by initiation of the male partner. Women using oral contraceptives did not show a rise in female-initiated sexual activity at the corresponding time in their menstrual cycles, probably owing to the suppression of ovulatory increases in hormone secretion by the oral contraceptives.

Adult↗
PubMed2002

The Sexual Inhibition (SIS) and Sexual Excitation (SES) Scales: I. Measuring sexual inhibition and excitation proneness in men.

This study involves the development and initial validation of a questionnaire measuring the propensity for sexual inhibition and excitation in men: the Sexual Inhibition Sexual Excitation Scales (SIS/SES). The underlying theoretical model postulates that sexual response and associated behavior depend on dual control mechanisms, involving excitatory and inhibitory neurophysiological systems. The scales and their discriminant and convergent validity and test-retest reliability are described. In a sample of 408 sexually functional men (mean age = 22.8 years), factor analyses identified three higher-level factors: two related to sexual inhibition and one to sexual excitation. Multigroup Confirmatory Factor Analyses revealed that the factor structure provided an acceptable fit to the data obtained in a second (N = 459; mean age = 20.9 years) and third (N = 313; mean age = 46.2 years) sample of men, with similar distributions and relationships with other measures. Theoretical issues and areas for further research, including male sexual dysfunction and risk taking, are discussed.

Adolescent↗
PubMed2004

Sexual addiction, sexual compulsivity, sexual impulsivity, or what? Toward a theoretical model.

We critically review the concepts of sexual addiction, sexual compulsivity, and sexual impulsivity and discuss their theoretical bases. A sample of 31 self-defined sex addicts were assessed by means of interview and questionnaires and compared with a large age-matched control group. A tendency to experience increased sexual interest in states of depression or anxiety was strongly characteristic of the sex addict group. Dissociative experiences were described by 45% of sex addicts and may have some explanatory relevance. Obsessive-compulsive mechanisms may be relevant in some cases, and the addiction concept may prove to be relevant with further research. Overall, results suggested that out of control sexual behavior results from a variety of mechanisms. We propose an alternative theoretical approach to investigating these mechanisms based on the dual control model and recent research on the relation between mood and sexuality.

Adult↗