PhD Scientific Days 2026

Health Sciences 2.

Effects of Eccentric Versus Concentric Overload Resistance Training on Gait and Sit-to-Stand Kinematics: A Pilot Study Using Markerless Motion Capture

Előadó neve

Mr. Emam, Mohamed

Neptune code

BNV9i4

Előadó munkahelye

Semmelweis University

Előadó telefonszáma

06300946773

Előadó e-mail címe

abdelaziz.mohamed@phd.semmelweis.hu

Az előadás címe

Effects of Eccentric Versus Concentric Overload Resistance Training on Gait and Sit-to-Stand Kinematics: A Pilot Study Using Markerless Motion Capture

Szerző(k) neve és munkahelye

Mohamed Emam¹, András Horváth¹, Bálint Kovács², Beáta Csizmadia², Jingyi Ye², Tibor Hortobágyi²

1: Semmelweis University
2: Hungarian University of Sports Science

Bemutatás módja

Szóbeli

Szekció

Health Sciences 2.

Language of the presentation

English

Preferred session

Health Sciences

Összefoglaló szövege

Introduction
Eccentric overload resistance training may induce distinct neuromuscular adaptations compared to traditional approaches, but its effects on gait and sit-to-stand (STS) performance are not well understood.

Aims
To compare the effects of eccentric overload versus concentric overload resistance training on gait and STS biomechanics in older adults, with a focus on lower-limb kinematics.

Method
Ten healthy older adults were randomized into an eccentric overload group (ECC, n = 5) or a concentric overload group (CON, n = 5). Pre- and post-intervention assessments of gait and STS were conducted using markerless motion capture (OpenCap). Gait trials were performed at a fixed cadence and averaged across five trials. For STS, three trials were recorded, and the fastest was analyzed. Linear mixed-effects models assessed spatiotemporal gait and scalar STS outcomes, while Statistical Parametric Mapping evaluated joint kinematics across the movement cycle.

Results
No significant group, time, or interaction effects were observed for gait or scalar STS outcomes. Gait speed and cadence remained stable in both groups. Descriptively, the CON group improved STS performance (reduced time, increased velocity), whereas the ECC group showed minimal changes. However, kinematic analysis revealed a significant group effect in knee joint motion during 50–60% of the STS cycle (late rising phase), with the ECC group demonstrating altered knee excursion compared to CON. No other kinematic differences were found.

Conclusion
Eccentric overload training induced task-specific changes in knee joint kinematics during STS without affecting overall performance or gait. This suggests an influence on movement strategy rather than functional speed. Larger studies are needed to confirm these findings.

Funding
No funding was received.

University

Semmelweis University

Other university, not listed above

Hungarian University of Sports Science

Supervisor

András Horváth

Publication of my abstract

I give consent to the publication of my abstract on the website of the congress.

phd.section.field

in doctoral studies after complex exam (PhD)

Kind

Szabad

Status

elfogadva

Accepted presentation method

szóbeli

Előadás fájl jóváhagyás

jóváhagyta

Előadó

9667

Start

16:30

End

16:40