All news from Aviation Medicine & Aerospace Medicine

Manipulation During Rhythmic Arm Movements in Microgravity

Predicting the consequences of one’s own movements can be challenging when confronted with completely novel environmental dynamics, such as microgravity in space. The absence of gravitational force disrupts internal models of the central nervous system (CNS) that have been tuned to the dynamics of a constant 1-environment since birth.

In the context of object manipulation, inadequate internal models produce prediction uncertainty evidenced by increases in the grip force (GF) safety margin that ensures a stable grip during unpredicted load perturbations. This margin decreases with practice in a novel environment. However, it is not clear how the CNS might react to a reduced, but non-zero, gravitational field, and if adaptation to reduced gravity might be beneficial for subsequent microgravity exposure.

Ear Infection Making Your Child Cry?

Ear infections are one of the most common infections among infants. While there are different ear infections, otitis media is the most common. Statistics show that most kids will contract an infection at least once before they turn 2 years old.

Causes and Symptoms of Ear Infections

The ear has three parts: outer, middle (behind the eardrum) and inner (regulates hearing and balance). The two types of ear infections are swimmer’s ear, which affects the outer ear, and otitis media, an inflammation of the middle ear.

Obese Patients With PTSD Leads To Increased Risk Of Diabetes

Research finds post-traumatic stress disorder does not directly lead to type 2 diabetes mellitus (T2DM), instead, obesity in PTSD patients accounts for the increased risk. The study, "The Role of Obesity in the Association Between Posttraumatic Stress Disorder and Incident Diabetes" was published in JAMA Psychiatry.

Post-traumatic stress disorder is associated with risk factors for type 2 diabetes, including poor diet, lack of exercise, alcohol abuse and obesity. The risk factors may interact with hypothalamic-pituitary-adrenal changes to increase the risk of type 2 diabetes.

Association Between Morning-Eveningn Preference With BMI

People with prediabetes who go to bed later, eat meals later and are more active and alert later in the day those who have an "evening preference" have higher body mass indices compared with people with prediabetes who do things earlier in the day, or exhibit morning preference. The higher BMI among people with evening preference is related to their lack of sufficient sleep. The study was published in the journal Frontiers in Endocrinology.

Coronary Artery Compression From Epicardial Leads

The incidence of coronary artery compression in children fitted with epicardial pacemakers may be slightly more common than previously believed. After reviewing patient records at Boston Children's Hospital, they advocate for stricter monitoring to identify patients at risk and prevent complications. The study was published in the journal HeartRhythm, the official journal of the Heart Rhythm Society and the Cardiac Electrophysiology Society.