Τίτλος:
The effects of free weights and iso-inertial resistance during semi-squatting exercise on amateur soccer players' physical performance indicators: a randomized controlled study.
Περίληψη:
BACKGROUND: The aim was to compare the effects of two lower extremity strengthening programs using iso-inertial resistance or free weights on amateur soccer players’ physical performance indicators. METHODS: Thirty-five amateur soccer players (average age 22.6±5.1 years) were randomly assigned to iso-inertial group (n=11) or free-weight group (n=11), or control group (n=13). The groups performed two training sessions per week for six weeks. Before and after the strengthening implementation, physical performance indicators were evaluated, including the isokinetic knee extensors and flexors’ strength, power, speed, and agility. The significance level was set at p<0.05. RESULTS: The iso-inertial training resistance led to an increase in the hamstrings’ eccentric strength at 60°/s and 150°/s (p<0.05) compared to the free-weight resistance (p>0.05) and the controls (p>0.05). No other significant adaptations were observed in the other isokinetic strength, power, speed (10-m, p=0.052) and agility measurements (Illinois agility test, p=0.059). In ratio (knee flexors/knee extensors) the only differences observed was at 150 o/s for iso-inertial group (p<0.05). CONCLUSIONS: Iso-inertial resistance training during semi squatting can enhance the hamstrings’ eccentric performance andthe soccer players’ speed and agility compared to the classic free-weight training program, which should considered when designing strength and injury prevention programs.
Συγγραφείς:
Fousekis, Andreas
Fousekis, Konstantinos
Fousekis, Georgios
Manou, Vasiliki
Michailidis, Yiannis
Zelenitsas, Charalambos
Metaxas, Thomas
Περιοδικό:
The Journal of sports medicine and physical fitness
DOI:
10.23736/S0022-4707.21.12281-9
