A Double-Blinded, Randomized, Dose-Comparison Pilot Study to Comparatively Evaluate Efficacy and Safety of Two Doses of Botulinum Toxin Type A Injection for Deltoid Muscle Hypertrophy.

Ann Dermatol · 2023 · PMC10579568 · PMID 37830417

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a decreasing trendno p-value reported

The average thickness of the deltoid muscle showed a decreasing trend following PBoNT injection in both groups; however, the 16 U injection group showed a significant reduction in the upper shoulder at 2, 4, and 12 weeks and lower shoulder at 4 and 12 weeks ( Fig. 2A ).

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