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Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds

Background: There are growing health concerns about exposure to toxicants released from recycled tire rubber, which is commonly used in synthetic turf and playground mats. To better estimate children’s exposure and risk from recycled tire rubber used in synthetic turf and playground mats, there is a...

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Autores principales: Lopez-Galvez, Nicolas, Claude, Jocelyn, Wong, Patty, Bradman, Asa, Hyland, Carly, Castorina, Rosemary, Canales, Robert A., Billheimer, Dean, Torabzadeh, Elmira, Leckie, James O., Beamer, Paloma I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8879270/
https://www.ncbi.nlm.nih.gov/pubmed/35206675
http://dx.doi.org/10.3390/ijerph19042483
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author Lopez-Galvez, Nicolas
Claude, Jocelyn
Wong, Patty
Bradman, Asa
Hyland, Carly
Castorina, Rosemary
Canales, Robert A.
Billheimer, Dean
Torabzadeh, Elmira
Leckie, James O.
Beamer, Paloma I.
author_facet Lopez-Galvez, Nicolas
Claude, Jocelyn
Wong, Patty
Bradman, Asa
Hyland, Carly
Castorina, Rosemary
Canales, Robert A.
Billheimer, Dean
Torabzadeh, Elmira
Leckie, James O.
Beamer, Paloma I.
author_sort Lopez-Galvez, Nicolas
collection PubMed
description Background: There are growing health concerns about exposure to toxicants released from recycled tire rubber, which is commonly used in synthetic turf and playground mats. To better estimate children’s exposure and risk from recycled tire rubber used in synthetic turf and playground mats, there is a need to collect detailed accurate information on mouthing activity and dermal contact behaviors. The objective of this study was to quantify and analyze micro-level activity time series (MLATS) data from children aged 1–12 years old while playing (non-sport-related games) at turf-like locations and playgrounds. Another objective was to estimate the incidental ingestion rate of rubber crumb among children. Methods: Hand and mouth contact frequency, hourly duration, and median contact duration with different objects were calculated for children playing on turf (i.e., parks, lawns, and gardens) (n = 56) and for children playing on playground structures (n = 24). Statistically significant differences between males and females as well as children’s age groups were evaluated. The daily incidental ingestion rate of rubber crumb was calculated. Results: For children playing on turf, there were significant differences between younger (1–6 y) and older (7–12 y) children for the mouthing median duration with non-dietary objects and all objects. For children playing on playground structures, we found significant mouthing frequency differences between younger (1–6 y) and older children (7–12 y) with all objects, and for mouthing median duration with non-dietary objects. There were no significant differences between males and females playing on artificial turf-like surfaces or playground mats. Our estimated mean incidental ingestion rate was 0.08, 0.07, and 0.08 g rubber crumb/day for children <2, 2–6, and 6–11 years old, respectively. Discussion: our results suggest that age and contact duration should be considered in risk assessment models to evaluate mouthing activities when children are playing on artificial turf surfaces or playground mats.
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spelling pubmed-88792702022-02-26 Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds Lopez-Galvez, Nicolas Claude, Jocelyn Wong, Patty Bradman, Asa Hyland, Carly Castorina, Rosemary Canales, Robert A. Billheimer, Dean Torabzadeh, Elmira Leckie, James O. Beamer, Paloma I. Int J Environ Res Public Health Article Background: There are growing health concerns about exposure to toxicants released from recycled tire rubber, which is commonly used in synthetic turf and playground mats. To better estimate children’s exposure and risk from recycled tire rubber used in synthetic turf and playground mats, there is a need to collect detailed accurate information on mouthing activity and dermal contact behaviors. The objective of this study was to quantify and analyze micro-level activity time series (MLATS) data from children aged 1–12 years old while playing (non-sport-related games) at turf-like locations and playgrounds. Another objective was to estimate the incidental ingestion rate of rubber crumb among children. Methods: Hand and mouth contact frequency, hourly duration, and median contact duration with different objects were calculated for children playing on turf (i.e., parks, lawns, and gardens) (n = 56) and for children playing on playground structures (n = 24). Statistically significant differences between males and females as well as children’s age groups were evaluated. The daily incidental ingestion rate of rubber crumb was calculated. Results: For children playing on turf, there were significant differences between younger (1–6 y) and older (7–12 y) children for the mouthing median duration with non-dietary objects and all objects. For children playing on playground structures, we found significant mouthing frequency differences between younger (1–6 y) and older children (7–12 y) with all objects, and for mouthing median duration with non-dietary objects. There were no significant differences between males and females playing on artificial turf-like surfaces or playground mats. Our estimated mean incidental ingestion rate was 0.08, 0.07, and 0.08 g rubber crumb/day for children <2, 2–6, and 6–11 years old, respectively. Discussion: our results suggest that age and contact duration should be considered in risk assessment models to evaluate mouthing activities when children are playing on artificial turf surfaces or playground mats. MDPI 2022-02-21 /pmc/articles/PMC8879270/ /pubmed/35206675 http://dx.doi.org/10.3390/ijerph19042483 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lopez-Galvez, Nicolas
Claude, Jocelyn
Wong, Patty
Bradman, Asa
Hyland, Carly
Castorina, Rosemary
Canales, Robert A.
Billheimer, Dean
Torabzadeh, Elmira
Leckie, James O.
Beamer, Paloma I.
Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds
title Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds
title_full Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds
title_fullStr Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds
title_full_unstemmed Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds
title_short Quantification and Analysis of Micro-Level Activities Data from Children Aged 1–12 Years Old for Use in the Assessments of Exposure to Recycled Tire on Turf and Playgrounds
title_sort quantification and analysis of micro-level activities data from children aged 1–12 years old for use in the assessments of exposure to recycled tire on turf and playgrounds
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8879270/
https://www.ncbi.nlm.nih.gov/pubmed/35206675
http://dx.doi.org/10.3390/ijerph19042483
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