sDi volta in volta salta fuori il quesito se la palestra faccia piú o meno male alla progressione della calvizie. Cosí ho trovato uno studio interessante sull'argomento
Subclinical alterations in hormone and semen profile in athletes.
Authors
Arce JC, et al. Show all
Journal
Fertil Steril. 1993 Feb;59(2):398-404.
Affiliation
Department of Obstetrics and Gynecology, University of Connecticut Health Center, Farmington 06030-1230.
Abstract
STUDY OBJECTIVE: To investigate the effects of two forms of exercise, endurance training (running) and resistance training (weight lifting), on reproductive function in male athletes.DESIGN: Cross-sectional study.SETTING: Reproductive Endocrinology and Exercise Laboratory.SUBJECTS: Twenty-eight healthy male volunteers, 18 to 35 years of age, including 10 endurance-trained runners, 8 resistance-trained weight-lifters, and 10 sedentary controls.MAIN OUTCOME MEASURE(S): Hormonal evaluation included determination of plasma levels of total testosterone (T), serum levels of free T, luteinizing hormone (LH), follicle-stimulating hormone, prolactin, and estradiol, and urinary excretion of LH. Semen analyses included an evaluation of sperm characteristics in terms of density, count, motility, and morphology, and a determination of in vitro sperm penetration of standard bovine cervical mucus.RESULTS: Compared with sedentary controls, endurance-trained and resistance-trained athletes presented with significantly lower levels of total and free T. There were no significant differences in the serum levels of all other circulating and urinary hormone measurements among the three groups. Sperm density, motility, and morphology were significantly altered only in the endurance-trained runners. In vitro sperm penetration of standard cervical mucus was significantly reduced in the endurance-trained runners.CONCLUSION: Both endurance and resistance training modify the male reproductive hormone profile in a similar manner; however, only endurance training, in the form of running, is associated with subclinical modifications in semen characteristics.
Coloro che fanno esercizio fisico aerobico o anaerobico hanno il testo e testo libero significativamete piu basso dei sedentari. È vero che la palestra produce un temporaneo aumento del testosterone ma probabilmente come sostiene lo studio nel lungo termine sarà piu basso di quello dei sedentari.
Esistono anche altri studi un po contrastanti ma ció che mi è apparso chiaro è che chi è allenato o mette su molti muscoli (ovviamente al naturale ne steroidi ne diete che favoriscono il testo) non è detto che abbia un corrispondente aumento del testosterone anzi puo succedere il contrario.
Altrimenti i problemi di libido e di ipogonadismi verrebbero risolti semplicemente andando in palestra (e invece la pratica non ci suggerisce cosí purtroppo).
Se avete studi che contrastano questo postateli almeno ci chiariamo una volta x tutte le idee.
Subclinical alterations in hormone and semen profile in athletes.
Authors
Arce JC, et al. Show all
Journal
Fertil Steril. 1993 Feb;59(2):398-404.
Affiliation
Department of Obstetrics and Gynecology, University of Connecticut Health Center, Farmington 06030-1230.
Abstract
STUDY OBJECTIVE: To investigate the effects of two forms of exercise, endurance training (running) and resistance training (weight lifting), on reproductive function in male athletes.DESIGN: Cross-sectional study.SETTING: Reproductive Endocrinology and Exercise Laboratory.SUBJECTS: Twenty-eight healthy male volunteers, 18 to 35 years of age, including 10 endurance-trained runners, 8 resistance-trained weight-lifters, and 10 sedentary controls.MAIN OUTCOME MEASURE(S): Hormonal evaluation included determination of plasma levels of total testosterone (T), serum levels of free T, luteinizing hormone (LH), follicle-stimulating hormone, prolactin, and estradiol, and urinary excretion of LH. Semen analyses included an evaluation of sperm characteristics in terms of density, count, motility, and morphology, and a determination of in vitro sperm penetration of standard bovine cervical mucus.RESULTS: Compared with sedentary controls, endurance-trained and resistance-trained athletes presented with significantly lower levels of total and free T. There were no significant differences in the serum levels of all other circulating and urinary hormone measurements among the three groups. Sperm density, motility, and morphology were significantly altered only in the endurance-trained runners. In vitro sperm penetration of standard cervical mucus was significantly reduced in the endurance-trained runners.CONCLUSION: Both endurance and resistance training modify the male reproductive hormone profile in a similar manner; however, only endurance training, in the form of running, is associated with subclinical modifications in semen characteristics.
Coloro che fanno esercizio fisico aerobico o anaerobico hanno il testo e testo libero significativamete piu basso dei sedentari. È vero che la palestra produce un temporaneo aumento del testosterone ma probabilmente come sostiene lo studio nel lungo termine sarà piu basso di quello dei sedentari.
Esistono anche altri studi un po contrastanti ma ció che mi è apparso chiaro è che chi è allenato o mette su molti muscoli (ovviamente al naturale ne steroidi ne diete che favoriscono il testo) non è detto che abbia un corrispondente aumento del testosterone anzi puo succedere il contrario.
Altrimenti i problemi di libido e di ipogonadismi verrebbero risolti semplicemente andando in palestra (e invece la pratica non ci suggerisce cosí purtroppo).
Se avete studi che contrastano questo postateli almeno ci chiariamo una volta x tutte le idee.