People of African, Caribbean and Asian heritage “Find your float”: a cross-sectional study

Abstract
Drowning is a largely preventable global public health problem. Many accidental drownings are linked to the initial responses to cold water immersion (cold shock), that includes a rapid involuntary cardio-respiratory response that increases the risk of aspi-rating water within the first two minutes of immersion. Floating rather than struggling to swim can help survival at this time. It is commonly believed that individuals of African and Caribbean heritage find it difficult to float due to ‘heavy bones’, a high bone mineral density (BMD). This study examined predictors of float outcome. A total of 101 partici-pants of African, Caribbean, Asian, or mixed heritage were recruited; 96 attempted a two-minute supine float following instruction and practice, of whom 89 were successful. Body fat percentage strongly correlated with buoyancy and floating outcome, while other predictors, including BMD, showed weak or no association. Passive floaters (no effort required) demonstrated greater buoyancy and less exertion than active floaters (some sculling required). These findings suggest that body fat percentage is the primary factor influencing float outcome, and that with appropriate instruction and practice, in-dividuals of African, Caribbean and Asian heritage can “find their float”: the results in-dicate that floating is a learnable competence and highlights the need for integrated drowning prevention strategies combining existing campaigns with accessible, commu-nity-based practice and co-produced approaches to improve engagement and equity.