Obese Youth Demonstrate Altered Landing Knee Mechanics Unrelated to Lower-Extremity Peak Torque When Compared With Healthy Weight Youth
| Autor: | Rachel King, Michael P. McNally, Matthew Paponetti, Sharon Bout-Tabaku, Laura C. Schmitt, Claire Spech, Matthew S. Briggs |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adolescent
Knee Joint Knee flexion Biophysics Knee extension 03 medical and health sciences 0302 clinical medicine Humans Torque Medicine Knee Orthopedics and Sports Medicine Obesity Healthy weight Orthodontics Knee mechanics business.industry Rehabilitation 030229 sport sciences Sagittal plane Biomechanical Phenomena medicine.anatomical_structure Hip extension Lean body mass business 030217 neurology & neurosurgery |
| Zdroj: | Journal of Applied Biomechanics. 37:109-117 |
| ISSN: | 1543-2688 1065-8483 |
| Popis: | Obese (OB) youth demonstrate altered knee mechanics and worse lower-extremity performance compared with healthy weight (HW) youth. Our objectives were to compare sagittal plane knee landing mechanics between OB and HW youth and to examine the associations of knee and hip extension peak torque with landing mechanics in OB youth. Twenty-four OB and 24 age- and sex-matched HW youth participated. Peak torque was measured and normalized to leg lean mass. Peak knee flexion angle and peak internal knee extension moment were measured during a single-leg hop landing. Paired t tests, Pearson correlation coefficients, and Bonferroni corrections were used. OB youth demonstrated worse performance and lower knee extension (OB: 12.76 [1.38], HW: 14.03 [2.08], P = .03) and hip extension (OB: 8.59 [3.13], HW: 11.10 [2.89], P = .005) peak torque. Furthermore, OB youth demonstrated lower peak knee flexion angles (OB: 48.89 [45.41 to 52.37], HW: 56.07 [52.59 to 59.55], P = .02) and knee extension moments (OB: −1.73 [−1.89 to −1.57], HW: −2.21 [−2.37 to −2.05], P = .0001) during landing compared with HW youth. Peak torque measures were not correlated with peak knee flexion angle nor internal knee extension moment during landing in either group (P > .01). OB youth demonstrated altered landing mechanics compared with HW youth. However, no associations among peak torque measurements and knee landing mechanics were present. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|