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Drowning is the third leading cause of death worldwide¹
Children under thirteen are five times more susceptible to accidental drowning²
People possessing swimming and water safety knowledge are 90% more likely to survive drowning accidents¹

Background

Prior Work

Evaluation

Work in Progress

Significantly improve accuracy for application
Give corrective advice for stroke technique
Determine current skill level
Detect indicators of drowning
Classify in real time

References

Classes are costly and over 50% of Americans overall cannot swim, which limits swimming education⁴
Most stroke classification research revolves around seasoned swimmers
Prior works focused on lap swimming rather than practical survival swimming³

[1] Ruth A Brenner, Gitanjali Saluja Taneja, Denise L Haynie, Ann C Trumble, Cong Qian, Ron M Klinger, and Mark A Klebanoff. 2009. Association between swimming lessons and drowning in childhood: a case-control study. Archives of pediatrics & adolescent medicine 163, 3 (2009), 203–210.

[2] Gordon S Smith. 1995. Drowning prevention in children: the need for new strategies.Injury Prevention 1, 4 (1995), 216.

[3] Joana Costa, Catarina Silva, Miguel Santos, Telmo Fernandes, and Sérgio Faria. 2021. Framework for Intelligent Swimming Analytics with Wearable Sensors for Stroke Classification. Sensors 21, 15 (2021), 5162.

[4] Red Cross. 2023. American Red Cross: Vigilance, Strong Swimming Skills & Water Safety. https://www.redcross.org/local/texas/north-texas/about-us/news-and-events/press-releases/american-red-cross-vigilance-strong-swimming-skills-water-safety.html

Advisors: Larry Powell, Tracy Hammond

Lawrence Wong, Michael Taylor | Social Science and Human Development

Analyzing Sensor-Driven Activity Recognition in Swimming Schools Using Deep Learning

Method

Methods

Partnered with an Austin Swim School
Focused on children with minimal swimming knowledge
Captured wrist and lower back accelerometer data for 45 participants
Recorded 20 activities ranging from Land to Active Swimming for each participant

Land vs Water (20)

All Water Based Activities (12)

Run on 10 set random seeds
Classes balanced
60% training set
20% validation set
20% testing set
Split by participants

Stage 1

Bidirectional

LSTM

Stage 2

Hybrid CNN + Bidirectional

LSTM

Stage 3

Hybrid CNN + Bidirectional

LSTM

Acceleration vs. Time Graph

Passive vs Active Water Based Activities (17)

Objective

Determine The Viability of a Hierarchical Model for Swimming Activity Recognition

Proof of Concept

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