Effects of movement initiation pattern on dynamic postural stability across two individualized drop heights during single-leg landing in young men
6 affiliations
- 1School of Athletic Performance, Shanghai University of Sport, Shanghai, China
- 2Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, Netherlands
- 3Faculty of Science and Technology, London Sports Institute, Middlesex University, London, United Kingdom
- 4School of Intelligent Sports Engineering, Shanghai University of Sport, Shanghai, China
- 5Kunwei Sport Technology, Xinmin Vanke Superchain, No.305 Qixin Road, Minhang District, Shanghai, China
- 6Université Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité – UR 7424, UFRSTAPS, Villeurbanne, France
Abstract
Objectives: Single-leg landing protocols differ in task components. We estimated pattern differences in vertical time to stabilization (V-TTS) and the Dynamic Postural Stability Index (DPSI) at two individualized heights, with 95% confidence intervals, and tested whether they changed with height.
Methods: In a within-participant 3 × 2 factorial experiment, twenty-three healthy young male strength and conditioning students (5.7 ± 3.2 years of systematic sports training) completed randomized step-off (SOL), single-leg jump (SLJL), and single-leg hop (SLHL) landings at two individualized drop heights derived from countermovement jumps. Linear mixed-effects models tested pattern, height, and interaction effects on TTS and DPSI; statistical parametric mapping compared take-off and landing force waveforms.
Results: Pattern × Height interactions occurred for V-TTS (p = 0.004) and DPSI (p = 0.001). At Low, the largest contrasts were SLHL-SOL for V-TTS (0.15 s; 95% CI, 0.11 to 0.20) and DPSI (0.079; 95% CI, 0.066 to 0.092; adjusted p < 0.001 for both). At High, both active patterns differed from SOL (V-TTS, 0.06-0.07 s; DPSI, 0.041-0.054; adjusted p ≤ 0.014) with no clear difference between the active patterns after adjustment. The SLHL–SOL and SLHL–SLJL differences for V-TTS and the SLJL–SOL and SLHL–SOL differences for DPSI were larger at Low, whereas the V-TTS SLJL–SOL and DPSI SLHL–SLJL contrasts showed no clear change. Horizontal TTS showed no adjusted differences. Take-off and landing interactions involved all force components.
Conclusions: In healthy young men, movement initiation pattern altered V-TTS and DPSI at both heights, and some differences varied with height. Cross-study comparisons should match initiation pattern and prescribed height.
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BibTeX
@article{li2026effects,
title = {{Effects of movement initiation pattern on dynamic postural stability across two individualized drop heights during single-leg landing in young men}},
author = {Ying Li and Ruiqi Cheng and Idsart Kingma and Chris Bishop and Weijie Fu and Fei Li and Ming Li and Christophe Hautier and Qingshan Zhang},
journal = {Frontiers in Physiology},
year = {2026},
month = oct,
doi = {10.3389/fphys.2026.1973245},
url = {https://doi.org/10.3389/fphys.2026.1973245},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Effects of movement initiation pattern on dynamic postural stability across two individualized drop heights during single-leg landing in young men
AU - Ying Li
AU - Ruiqi Cheng
AU - Idsart Kingma
AU - Chris Bishop
AU - Weijie Fu
AU - Fei Li
AU - Ming Li
AU - Christophe Hautier
AU - Qingshan Zhang
PY - 2026
DA - 2026/10/21
JO - Frontiers in Physiology
DO - 10.3389/fphys.2026.1973245
UR - https://doi.org/10.3389/fphys.2026.1973245
AB - Objectives: Single-leg landing protocols differ in task components. We estimated pattern differences in vertical time to stabilization (V-TTS) and the Dynamic Postural Stability Index (DPSI) at two individualized heights, with 95% confidence intervals, and tested whether they changed with height. Methods: In a within-participant 3 × 2 factorial experiment, twenty-three healthy young male strength and conditioning students (5.7 ± 3.2 years of systematic sports training) completed randomized step-off (SOL), single-leg jump (SLJL), and single-leg hop (SLHL) landings at two individualized drop heights derived from countermovement jumps. Linear mixed-effects models tested pattern, height, and interaction effects on TTS and DPSI; statistical parametric mapping compared take-off and landing force waveforms. Results: Pattern × Height interactions occurred for V-TTS (p = 0.004) and DPSI (p = 0.001). At Low, the largest contrasts were SLHL-SOL for V-TTS (0.15 s; 95% CI, 0.11 to 0.20) and DPSI (0.079; 95% CI, 0.066 to 0.092; adjusted p < 0.001 for both). At High, both active patterns differed from SOL (V-TTS, 0.06-0.07 s; DPSI, 0.041-0.054; adjusted p ≤ 0.014) with no clear difference between the active patterns after adjustment. The SLHL–SOL and SLHL–SLJL differences for V-TTS and the SLJL–SOL and SLHL–SOL differences for DPSI were larger at Low, whereas the V-TTS SLJL–SOL and DPSI SLHL–SLJL contrasts showed no clear change. Horizontal TTS showed no adjusted differences. Take-off and landing interactions involved all force components. Conclusions: In healthy young men, movement initiation pattern altered V-TTS and DPSI at both heights, and some differences varied with height. Cross-study comparisons should match initiation pattern and prescribed height.
SN - 1664-042X
ER -