Objectives: To compare the efficacy of the new self-inflatable Quick Rescue (QR) flotation device to conventional tube and buoy devices. To compare lifeguard fatigue after rescues with different flotation devices.
Material And Methods: Forty lifeguards participated in this quasi-experimental field study. Each performed simulated rescues of sea swimmers in distress under 4 conditions (no device, the QR device, a tube, and a buoy) assigned in random order. The swimmer in distress was located at a distance of 100 m. Ambient conditions, victim type, and beach were standardized. Participants underwent training to use the inflatable QR float and all other devices. Expertise was defined as a score of at least 3 on a Likert scale of 1 to 5. We recorded rescue times (total, and approaching, securing and towing back the distressed swimmer) as well as the lifeguards' perceptions of effort (overall and for each stage).
Results: Most rescue times did not differ between conditions, with the exception of time needed to secure the victim, which was shorter by 3 seconds when no device was used (P<.05). The rescuers did not perceive differences between devices in overall effort or effort during any of the phases.
Conclusion: The new self-inflating QR device is as useful as other flotation devices in terms of rescue times and effort expended by lifeguards. We can therefore recommend its use for rescuing sea swimmers in distress.
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Prehosp Disaster Med
December 2024
CLINURSID Research Group, Psychiatry, Radiology, Public Health, Nursing and Medicine Department; University of Santiago de Compostela, A Coruña, Spain.
Background: Drowning remains a significant cause of mortality among children world-wide, making prevention strategies crucial. The World Health Organization (WHO) recommends training children in safe rescue techniques, including the use of basic skills such as throwing floating objects. This study aims to address a knowledge gap regarding the throwing capabilities of children aged six to twelve using conventional and alternative water rescue materials.
View Article and Find Full Text PDFSensors (Basel)
May 2022
Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung 202301, Taiwan.
The ocean resources have been rapidly depleted in the recent decade, and the complementary role of aquaculture to food security has become more critical than ever before. Water quality is one of the key factors in determining the success of aquaculture and real-time water quality monitoring is an important process for aquaculture. This paper proposes a low-cost and easy-to-build artificial intelligence (AI) buoy system that autonomously measures the related water quality data and instantly forwards them via wireless channels to the shore server.
View Article and Find Full Text PDFEmergencias
September 2021
Grupo de Investigación GRFBE, UIC-Sant Cugat del Vallès, España. Universitat Internacional de Catalunya, Sant Cugat del Vallès, España. Facultad de Ciencias de la Salut Blanquerna, Universitat Ramon Llull, Barcelona, España.
Objectives: To compare the efficacy of the new self-inflatable Quick Rescue (QR) flotation device to conventional tube and buoy devices. To compare lifeguard fatigue after rescues with different flotation devices.
Material And Methods: Forty lifeguards participated in this quasi-experimental field study.
Environ Pollut
January 2005
Freshwater Biological Association, The Ferry House, Ambleside, Cumbria LA22 0LP, UK.
Five different water sampling techniques have been compared in a series of lakes. In deep lakes, no significant differences were observed between mean summer nutrient concentrations measured in (i) a tube sample integrating over the photic zone taken from the deepest point; (ii) a surface dip sample taken at the deepest point; (iii) a surface dip sample taken by wading into the water's edge; (iv) a dip sample taken slightly further off shore by suspending a bottle below a buoy thrown out about 30 m from the shore; and (v) a sample taken along a short transect out from the shore using a model boat to transport the sample bottle. In shallower lakes the integrating tube sampler gave significantly higher estimates of mean concentrations than other methods due to the increase in volume of the unmixed hypolimnion which reduced the depth of the well mixed epilimnion to less than the tube length.
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