Patients recovering from COVID-19 often report symptoms of exhaustion, fatigue and
dyspnoea and present with exercise intolerance persisting for months post-infection …

Orthostatic intolerance (OI), having difficulty tolerating an upright posture because of
symptoms or signs that abate when returned to supine, is common in pediatrics. ‍ For …

Human spaceflight has been fascinating man for centuries, representing the intangible need
to explore the unknown, challenge new frontiers, advance technology, and push scientific …

Bed rest is a common intervention for critically ill adults. Associated with both benefits and
adverse effects, bed rest is undergoing increasing scrutiny as a therapeutic option in the …

Abstract Hackney, KJ, Scott, JM, Hanson, AM, English, KL, Downs, ME, and Ploutz-Snyder,
LL. The astronaut-athlete: optimizing human performance in space. J Strength Cond Res 29 …

Purpose Space agencies are looking for effective and efficient countermeasures for the
degrading effects of weightlessness on the human body. The aim of this study was to assess …

Physical inactivity is associated with an increase in cardiovascular risk that cannot be fully
explained by traditional or novel risk factors. Inactivity is also associated with changes in …

This article reviews the concept of maximal oxygen consumption (̇ VO _ 2 max V˙ O 2 max)
from the perspective of multifactorial models of ̇ VO _ 2 max V˙ O 2 max limitation. First, I …

Experimental models of physical inactivity associated with a sedentary lifestyle or extreme
forms of inactivity with bed rest or spaceflight affect the balance between parasympathetic …

Exposure to artificial gravity (AG) in a short-arm centrifuge has potential benefits for
maintaining human performance during long-term space missions. Eleven subjects were …