Introduction: Adult attention-deficit/hyperactivity disorder (ADHD) is associated with increased chance of workplace accidents, psychiatric comorbidities, other risky behaviours and sophisticated psychopharmacological treatment. These factors all contribute to a potentially complex risk profile within the commercial diving context. In order to make informed decisions regarding ADHD and commercial diving, further description of this condition among commercial divers is required. This paper reports on a study that aimed to determine the prevalence of adult ADHD among commercial divers.
Methods: The study used a self-reporting survey-type questionnaire to determine likely diagnosis, based on Diagnostic and Statistical Manual of Mental Disorders, 5th ed. criteria, in a group of 245 commercial divers in South Africa.
Results: Fourteen cases (5.7% of the sample) met criteria for ADHD. The majority of the cases presented with combined type, and reflected mild forms of ADHD. Adult ADHD did not appear to occur in significantly different proportions across the biographical variables of age, education or diving qualification.
Conlcusion: Based on this small survey, adult ADHD may be over-represented in commercial diving in South Africa, compared to general workplace populations. However, ADHD may not necessarily be a contra-indication to commercial diving.
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http://dx.doi.org/10.28920/dhm50.2.164-167 | DOI Listing |
Front Physiol
January 2025
Department of Health Sciences, Environmental Physiology Group, Mid Sweden University, Östersund, Sweden.
Breath-hold diving performances are typically better in men than in women. However, it is still being determined if there are differences in the physiological responses to breath-holding between the sexes. We conducted a study comparing the maximum breath-hold duration, heart rate (HR) reduction, peripheral oxygen saturation (SpO), and spleen volume and contraction in 37 men and 44 women, all of whom had no prior breath-holding experience.
View Article and Find Full Text PDFFront Physiol
January 2025
Human Physiology Section of the Department of Pathophysiology and Transplantation, Università Degli Studi, Milano, Italy.
Introduction: Prolonged or strenuous exercise leads to a temporary decrease in muscle function and performance, which interferes with activity of both prime movers and postural muscles. This effect of fatigue has been reported both for single segment movements and for locomotion. However, little is known regarding the effects of fatigue on anticipatory postural adjustments (APAs) during gait initiation, a task in which the control of focal movement should be strictly coupled to a feedforward control of posture.
View Article and Find Full Text PDFFront Physiol
January 2025
Environmental Physiology Group, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
Background And Aim: Hyperventilation before breath-hold diving (freediving) is widely accepted as a risk factor for hypoxic syncope or blackout (BO), but there is no practical way to address it before dives. This study explores the feasibility of using a force sensor to predict end-tidal carbon dioxide ( CO) to assess hyperventilation in freedivers.
Methods And Results: Twenty-one freedivers volunteered to participate during two national competitions.
J Agromedicine
January 2025
Department of Connectivity, Comunidad y Biodiversidad A.C., Guaymas Sonora, México.
Objectives: This study aimed to evaluate the working and health conditions faced by divers in small-scale fisheries in the Midriff Islands Region of the Gulf of California, Mexico.
Methods: The study was conducted in five fishing communities. A semi-structured questionnaire was administered to 113 fishers (~15% of the commercial divers in the region).
Front Physiol
December 2024
The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States.
Insight into human physiology is key to maintaining diver safety in underwater operational environments. Numerous hazardous physiological phenomena can occur during the descent, the time at depth, the ascent, and the hours after a dive that can have enduring consequences. While safety measures and strict adherence to dive protocols make these events uncommon, diving disorders still occur, often with insufficient understanding of the factors that triggered the event.
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