Estimated workload intensity during volunteer aquarium dives
MetadataShow full item record
This is a pre-copyedited, author-produced version of an article accepted for publication in Occupational Medicine, following peer review. The version of record Buzzacott, P. and Grier, J.W. and Walker, J. and Bennett, C.M. and Denoble, P.J. 2019. Estimated workload intensity during volunteer aquarium dives. Occupational Medicine. 69 (3): pp. 177-181 is available online at: https://doi.org/10.1093/occmed/kqz011
Background: This study aimed to characterize the physiological demands of working dives on volunteer divers at a public aquarium in the USA. Aims: To estimate the workloads associated with volunteer dives in a US aquarium. Methods: Participants completed a medical and diving history questionnaire. Measurements included blood pressure before and after diving and continuous ECG (Holter) monitoring during diving. Dive profiles were recorded using loggers. Mean workload was estimated from total air consumption. Results Twenty-seven divers recorded 49 air dives over 5 days. Two-thirds were male and ages ranged from 40 to 78 years. Typically, each diver made two dives with a 30-60 min surface interval. Mean heart rate while diving was 100 beats per minute (bpm). Mean estimated workload during the dives recorded during this study was 5.8 metabolic equivalents (METS), with a range from 4.1 to 10.5. The highest mean recorded heart rate was 120 bpm over 40 min, vacuuming the floor in the shark exhibit. Conclusions: Given the mean age of this sample and the prevalence of cardiovascular risk factors (body mass index, high cholesterol and hypertension), it may be prudent for aquariums to regularly monitor SAC/kg and heart rate in volunteer divers, to identify which tasks require the highest workload intensity. Divers with existing cardiovascular risk factors might then be employed in dives with lighter workloads. In conclusion, volunteer dives at this aquarium required a mean workload intensity that was described by recreational divers as moderate. The highest workload, at 10 METS for 23 min, would be considered by many recreational divers as exhausting.
Showing items related by title, author, creator and subject.
Buzzacott, Peter; Pollock, N.; Rosenberg, M. (2014)Introduction: Episodic exercise is a risk factor for acute cardiac events and cardiac complications are increasingly recognized in fatalities during recreational scuba diving. What is not known is the exercise intensity ...
DecoBubbles.com: The first crowdsourcing initiative to expedite VGE counting in 2D-ultrasound recordings and provide labels for machine learningTillmans, Frauke; Smolka, M.; Le, D.; Karimpour, K.; Martina, Stephanie; Romfoe, Alexandra; Buzzacott, Peter ; Papadopoulou, Virginie (2021)Introduction/Background Venous gas emboli (VGE) detected with echocardiography post-dive are often used as a marker of decompression stress. The very time-consuming analysis of the acquired videos can help elucidate ...
Shreeves, K.; Buzzacott, Peter ; Hornsby, A.; Caney, M. (2018)© 2018 PSMTTM. Background: Diving is a popular recreation with an excellent safety record, with an estimated 1.8 deaths per 1 million dives. This study investigated the relationship between intentional deviation from ...