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Extending Human Postural Stability Limits Through Engineering Mechanisms: Analysis of Michael Jackson’s 45° ForwardLean


Authors : Satadip Banerjee; Sayantan Chakraborty

Volume/Issue : Volume 11 - 2026, Issue 4 - April


Google Scholar : https://tinyurl.com/4m37nmas

Scribd : https://tinyurl.com/492ybbwz

DOI : https://doi.org/10.38124/ijisrt/26apr1557

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.


Abstract : The natural ability of humans to maintain postural stability becomes restricted when they reach their maximum physical capabilities and attempt to maintain balance during extreme forward slopes that push their center of mass beyond their base of support. Michael Jackson's 45° forward lean in his Smooth Criminal dance performance demonstrates an outstanding case study, which researchers can use to investigate how external factors help dancers exceed their physical performance limits. This study examines how human balance systems interact with torque production and mechanical support to enable individuals to attain extreme leaning positions. The research establishes a theoretical framework that combines physics and biomechanics to examine stability loss conditions and the effects of artificial systems on those conditions. It also investigates how dedicated support systems function to distribute forces while they improve stability in a more effective manner. Results of this study shows that human beings can only lean forward to a limited angle but when they use mechanical enhancements this limit increases because their center of mass now behaves differently in relation to their base of support. This paper demonstrates how these mechanisms affect technology for assisting people with disabilities and systems for rehabilitating patients and the interaction between humans and machines.

Keywords : Anti-Gravity Lean, Biomechanics, Center of Mass, Forward Lean Dynamics, Human Balance, Torque and Stability.

References :

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  3. Lee, H. J., & Chou, L. S. (2006). Detection of gait instability using the center of mass and center of pressure inclination angles. Journal of Biomechanics, 39(3), 517–524.
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  5. Neumann, D. A. (2017). Kinesiology of the musculoskeletal system: Foundations for rehabilitation (3rd ed.). Elsevier.
  6. Perry, J., & Burnfield, J. M. (2010). Gait analysis: Normal and pathological function. SLACK Incorporated.
  7. Shah, A., et al. (2018). How did Michael Jackson perform his 45-degree anti-gravity lean? Journal of Neurosurgery: Spine, 29(2), 123–129.
  8. Winter, D. A. (1995). Human balance and posture control during standing and walking. Gait & Posture, 3(4), 193–214.
  9. Winter, D. A. (2009). Biomechanics and motor control of human movement (4th ed.). Wiley.
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The natural ability of humans to maintain postural stability becomes restricted when they reach their maximum physical capabilities and attempt to maintain balance during extreme forward slopes that push their center of mass beyond their base of support. Michael Jackson's 45° forward lean in his Smooth Criminal dance performance demonstrates an outstanding case study, which researchers can use to investigate how external factors help dancers exceed their physical performance limits. This study examines how human balance systems interact with torque production and mechanical support to enable individuals to attain extreme leaning positions. The research establishes a theoretical framework that combines physics and biomechanics to examine stability loss conditions and the effects of artificial systems on those conditions. It also investigates how dedicated support systems function to distribute forces while they improve stability in a more effective manner. Results of this study shows that human beings can only lean forward to a limited angle but when they use mechanical enhancements this limit increases because their center of mass now behaves differently in relation to their base of support. This paper demonstrates how these mechanisms affect technology for assisting people with disabilities and systems for rehabilitating patients and the interaction between humans and machines.

Keywords : Anti-Gravity Lean, Biomechanics, Center of Mass, Forward Lean Dynamics, Human Balance, Torque and Stability.

Paper Submission Last Date
31 - May - 2026

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