Final answer:
High proteoglycan aggregates and low collagen levels in the ECM result in increased hydration and compression resistance, high shock absorption, reduced tensile strength and structural support, and higher viscosity and lubrication.
Step-by-step explanation:
High proteoglycan aggregates and low collagen levels in the extracellular matrix (ECM) result in increased hydration and compression resistance, high shock absorption, reduced tensile strength and structural support, and higher viscosity and lubrication.
Proteoglycans, which are composed of glycosaminoglycans (GAGs) linked to proteins, occupy large amounts of space and form hydrated gels that resist compression. Their high aggregating properties contribute to increased hydration and compression resistance in the ECM.
On the other hand, collagen is the major component of the ECM and provides tensile strength and structural support. Low collagen levels in combination with high proteoglycan aggregates lead to reduced tensile strength and structural support.
Additionally, proteoglycans contribute to higher viscosity and lubrication in the ECM due to their ability to attract and trap moisture, forming a clear, viscous matrix.