Skill Football Players Outperform and "Outforce" Big-Skill and Big Players in the Vertical Jump
Abstract
Vertical jump (VJ) performance is critical for football players. Position demands vary and may influence VJ loading (eccentric) and propulsion (concentric) forces. Examining forces in addition to jump height (JH) informs training programs. We aimed to determine differences in VJ performance [reactive strength (RSImod, m/s); JH (cm)] and peack concentric (CON-PF) and eccentric (ECC-PF) forces between position groups. Sixty football players (age, 22.6±1.1yrs; ht, 186.4±6.8cm; mass, 103.6±21.2kg) representing three position groups, Skill, Big-Skill, and Big, performed VJ on dual uniaxial force plates. ForceDecks software allowed for calculation of the dependent variables. ECC-PF and CON-PF were normalized to body mass (N/kg). Between group differences were determined with ANOVAs, p≤.001, and Turkey HSDs, as necessary. CON-PF was different between groups (F(2,59)=10.9, p<.001) with Skill (29.0±2.2N/kg) greater than Big-Skill (27.3±2.1N/kg) and Big (25.5±2.3N/kg). Big-Skill were not different than Big. ECC-PF was different between groups (F(2,59)=6.2, p=.004) with Skill (24.3±2.9N/kg) greater than Big (20.8±2.0N/kg). Big-Skill (22.7±3.2N/kg) was not different than Skill or Big. RSImod was different between groups (F(2,59)=12.7, p<.001) with Skill (0.72±0.13m/s) higher than Big-Skill (0.65±0.14m/s), and Big (0.49±0.09m/s) higher than Big. JH was significantly different between groups, (F(2,59)=4.5, p=0.15). Skill (55.5±7.8cm) jumped higher than Big (46.5±10.9cm). Big-Skill (53.1±8.0cm) was not different from Skill and Big. Results indicate Skill players, who are lighter mass perform better on VJ as indicated by higher JH and RSImod. They may achieve this by producing greater forces per kilogram of body mass than other positions. Mass may be a limiting factor in peak force production.
Faculty Sponsors
Dr. Monique Mokha
Project Type
Event
Location
Alvin Sherman Library
Start Date
4-6-2022 12:00 PM
End Date
4-7-2022 5:00 PM
Skill Football Players Outperform and "Outforce" Big-Skill and Big Players in the Vertical Jump
Alvin Sherman Library
Vertical jump (VJ) performance is critical for football players. Position demands vary and may influence VJ loading (eccentric) and propulsion (concentric) forces. Examining forces in addition to jump height (JH) informs training programs. We aimed to determine differences in VJ performance [reactive strength (RSImod, m/s); JH (cm)] and peack concentric (CON-PF) and eccentric (ECC-PF) forces between position groups. Sixty football players (age, 22.6±1.1yrs; ht, 186.4±6.8cm; mass, 103.6±21.2kg) representing three position groups, Skill, Big-Skill, and Big, performed VJ on dual uniaxial force plates. ForceDecks software allowed for calculation of the dependent variables. ECC-PF and CON-PF were normalized to body mass (N/kg). Between group differences were determined with ANOVAs, p≤.001, and Turkey HSDs, as necessary. CON-PF was different between groups (F(2,59)=10.9, p<.001) with Skill (29.0±2.2N/kg) greater than Big-Skill (27.3±2.1N/kg) and Big (25.5±2.3N/kg). Big-Skill were not different than Big. ECC-PF was different between groups (F(2,59)=6.2, p=.004) with Skill (24.3±2.9N/kg) greater than Big (20.8±2.0N/kg). Big-Skill (22.7±3.2N/kg) was not different than Skill or Big. RSImod was different between groups (F(2,59)=12.7, p<.001) with Skill (0.72±0.13m/s) higher than Big-Skill (0.65±0.14m/s), and Big (0.49±0.09m/s) higher than Big. JH was significantly different between groups, (F(2,59)=4.5, p=0.15). Skill (55.5±7.8cm) jumped higher than Big (46.5±10.9cm). Big-Skill (53.1±8.0cm) was not different from Skill and Big. Results indicate Skill players, who are lighter mass perform better on VJ as indicated by higher JH and RSImod. They may achieve this by producing greater forces per kilogram of body mass than other positions. Mass may be a limiting factor in peak force production.
