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		<title>Adolescent Hearts Grow More Predictable: Study Maps Hidden Rhythms of Childhood</title>
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		<pubDate>Tue, 06 Oct 2026 14:50:34 +0000</pubDate>
				<category><![CDATA[Health]]></category>
		<category><![CDATA[approximate entropy]]></category>
		<category><![CDATA[autonomic nervous system]]></category>
		<category><![CDATA[cardiac development]]></category>
		<category><![CDATA[detrended fluctuation analysis]]></category>
		<category><![CDATA[fractal dynamics]]></category>
		<category><![CDATA[heart rate variability]]></category>
		<category><![CDATA[nonlinear dynamics]]></category>
		<category><![CDATA[parasympathetic tone]]></category>
		<category><![CDATA[Pediatrics]]></category>
		<category><![CDATA[Poincaré plot]]></category>
		<category><![CDATA[puberty]]></category>
		<category><![CDATA[sex differences]]></category>
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					<description><![CDATA[A new cross-sectional study of 64 healthy children and adolescents shows that heart rate rhythms become more regular and less fractal with age, particularly in boys, revealing developmental patterns invisible to conventional linear heart rate variability analysis.]]></description>
		
		
		
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