Vol. 7, Issue 2, Part C (2025)

Background: Midlife learners often show fluctuating balance and mismatches between perceived and actual form. Brief remote sessions paired with concise, time-stamped instructor comments may refine proprioceptive control.  Objective: To describe one month of tailored the 3D Movement Method practice in a midlife participant and to test whether asynchronous knowledge-of-performance comments were associated with improvements beyond practice alone.  Design and setting: Single-case, remote follow-up over approximately seven weeks. Practice focused on four foundational movements (mermaid, side plank, push-up, shrimp squat). After an initial practice-only period, two cycles of brief, time-stamped comments were delivered on uploaded clips.  Data sources and analysis: Practice and test videos at anchor days 2, 11, 28, and 51; a three-time-point functional battery (days 0, 8, 48); expert comments; and participant reflections/interview. Videos were appraised with a structured qualitative rubric; verbal materials were analyzed reflexively. Results: Relative to early practice, movement amplitude and continuity increased, compensations decreased, and balance and segmental control improved. Functional tests echoed these changes (e.g., deeper overhead squat with heel contact maintained; clearer roll down sequencing). Eyes-closed Romberg increased from approximately 30 seconds at baseline to approximately three minutes on sand at late follow-up with minimal sway. Improvements and reported mechanisms (slower tempo, deliberate amplitude monitoring, segment-by-segment control, growing autonomy without mirrors) converged temporally with the two comment cycles. Conclusions: In this single case, a brief remote practice format paired with two rounds of concise asynchronous comments was feasible and associated with observable refinement of proprioceptive execution. Findings are preliminary and bounded by real-world capture conditions and inventor involvement, and they motivate multi-participant studies with standardized metrics and independent ratings.