10 citations
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January 2002 in “Nihon Keshouhin Gijutsushakaishi/Journal of S C C./Nihon Keshouhin Gijutsushakai kaishi” This study found that the cuticle layer of hair contributes approximately 60% to bending stress, highlighting its significant role in the mechanical properties of hair stiffness.
September 2026 in “International Journal of Innovative Technologies in Social Science” This review discusses the relationship between physical activity and skin aging, highlighting that regular moderate exercise may benefit skin health but excessive exercise could increase oxidative stress and damage.
April 2026 in “European Journal of Cardiovascular Nursing” In this exploratory cross-sectional study, the researchers found a strong positive correlation between hair cortisol concentration and physical activity in patients with diastolic heart failure, but no correlation for other heart failure subgroups; perceived stress showed minimal association with physical activity across all subgroups.
3 citations
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September 2022 in “Frontiers in psychiatry” This study found that stress and its related symptoms were highly prevalent among university students in Egypt during the third wave of the COVID-19 pandemic, with most reporting negative coping strategies.
This study found that older beef feedlot steers had higher hair cortisol concentrations, but liver abscess presence was not linked to stress-related parameters in feedlot cattle.