The part of the sentence "demonstrated a significant decrease" is correct and usable in written English.
You can use this phrase to describe a situation in which a number or quantity has decreased significantly. For example: "The results of the study demonstrated a significant decrease in the disease's prevalence over the past year."
Claudicants demonstrated a significant decrease in walking speed, step frequency and increased time in double support (p < 0.05).
Experimental investigations conducted in Indonesia demonstrated a significant decrease in PV output power in relation to dust accumulation during a long period of dry conditions.
Previous studies demonstrated a significant decrease in inflammatory biomarkers in specific organs such as the lungs and kidneys in models of sepsis [14 16, 26 29].
Results demonstrated a significant decrease in growth rates through time and significantly faster growth rates in the central region of the estuary with no significant interaction.
Blending of PF-108 demonstrated a significant decrease in the surface hydrophilicity of microfibers as was evidenced by an increase in wetting tension.
Micro-CT analysis demonstrated a significant decrease in vertebral and femoral bone mineral volume, trabecular number, bone surface density and cortical bone thickness in both treatment groups.
Our in-vitro 2D and 3D cell culture studies demonstrated a significant decrease in breast cancer cell viability upon incubation with TRAIL loaded Ti-TNT implants (TRAIL-TNTs).
The catalepsy studies in rodent model demonstrated a significant decrease in extra pyramidal adverse effects as compared to the pure atypical antipsychotic.
The time-dependent contrast enhancement curve obtained by the evaluation of MR images demonstrated a significant decrease of enhancement features typical for inflammation in the affected area.
μCT analyses demonstrated a significant decrease in distal metaphyseal trabecular architecture integrity with HLS, OVX and HLS + OVX (bone volume fraction decreased by 29%, 71%and87%7% respectively).
The melt rheological characterization of neat PC and PC/CBT blends demonstrated a significant decrease of the complex viscosity by the addition of CBT (10 wt%).
