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Related Concept Videos

Male Sexual Response: Erection & Ejaculation01:17

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Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
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Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
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Infertility in Males01:23

Infertility in Males

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Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
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Related Experiment Video

Updated: Jul 5, 2025

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations
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Muscle Strength and Male Sexual Function.

Anders Flataker Viken1, Silver Peeter Siiak2, Vivi Schlünssen3,4

  • 1Department of Clinical Science, University of Bergen, 5021 Bergen, Norway.

Journal of Clinical Medicine
|January 23, 2024
PubMed
Summary

Aging men experiencing sexual dysfunction face increased risks from obesity, diabetes, hypertension, and smoking. However, maintaining muscle strength may protect against decreased sexual function, offering a new avenue for intervention.

Keywords:
Aging Males’ Symptoms Scale (AMS)cardiovascular diseaseendothelial dysfunctionerectile dysfunctionerectile functionexercisemale sexual functionmusclemuscle strengthresistance training

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Area of Science:

  • Urology
  • Andrology
  • Men's Health

Background:

  • Sexual dysfunction, particularly erectile dysfunction, is a prevalent concern in aging men.
  • Cardiovascular risk factors like obesity, diabetes, hypertension, and smoking are established risks for erectile dysfunction.
  • The impact of muscle strength on male sexual function remains less understood.

Purpose of the Study:

  • To investigate the association between male sexual function and common cardiovascular risk factors.
  • To explore the relationship between exercise, muscle strength, and sexual function in aging men.

Main Methods:

  • Utilized data from the fourth wave of the RHINE study, including 2116 men aged 48-75 from Nordic-Baltic countries.
  • Collected data on anthropometrics, exercise, diseases, muscle strength, and sexual function via questionnaires (including the Aging Males' Symptoms scale).
  • Employed multivariable logistic regression analysis to assess associations.

Main Results:

  • Cardiovascular risk factors including Body Mass Index (BMI), age, smoking, diabetes, and hypertension were significantly associated with increased odds of decreased sexual function.
  • Conversely, reporting intact muscle strength was linked to lower odds of experiencing decreased sexual function.
  • These findings were observed in a large, diverse male population.

Conclusions:

  • Established cardiovascular risk factors are independently associated with diminished sexual function in aging men.
  • Preserving or enhancing muscle strength may play a protective role against sexual dysfunction.
  • Muscle strength emerges as a potentially modifiable factor influencing male sexual health.