title: Effects of weight lifting training combined with plyometric exercises on physical fitness, body composition, and knee extension velocity during kicking in football.
abstract: The effects of a training program consisting of weight lifting combined with plyometric exercises on kicking performance, myosin heavy-chain composition (vastus lateralis), physical fitness, and body composition (using dual-energy X-ray absorptiometry (DXA)) was examined in 37 male physical education students divided randomly into a training group (TG: 16 subjects) and a control group (CG: 21 subjects). The TG followed 6 weeks of combined weight lifting and plyometric exercises. In all subjects, tests were performed to measure their maximal angular speed of the knee during in-step kicks on a stationary ball. Additional tests for muscle power (vertical jump), running speed (30 m running test), anaerobic capacity (Wingate and 300 m running tests), and aerobic power (20 m shuttle run tests) were also performed. Training resulted in muscle hypertrophy (+4.3%), increased peak angular velocity of the knee during kicking (+13.6%), increased percentage of myosin heavy-chain (MHC) type IIa (+8.4%), increased 1 repetition maximum (1 RM) of inclined leg press (ILP) (+61.4%), leg extension (LE) (+20.2%), leg curl (+15.9%), and half squat (HQ) (+45.1%), and enhanced performance in vertical jump (all p < or = 0.05). In contrast, MHC type I was reduced (-5.2%, p < or = 0.05) after training. In the control group, these variables remained unchanged. In conclusion, 6 weeks of strength training combining weight lifting and plyometric exercises results in significant improvement of kicking performance, as well as other physical capacities related to success in football (soccer).
authors.affiliation: Department of Physical Education, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Canary Island, Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Perez-Gomez
authors.forename: Hugo
authors.initials: H
authors.lastname: Olmedillas
authors.forename: Safira
authors.initials: S
authors.lastname: Delgado-Guerra
authors.forename: Ignacio
authors.initials: I
authors.lastname: Ara
authors.forename: German
authors.initials: G
authors.lastname: Vicente-Rodriguez
authors.forename: Rafael Arteaga
authors.initials: RA
authors.lastname: Ortiz
authors.forename: Javier
authors.initials: J
authors.lastname: Chavarren
authors.forename: Jose A L
authors.initials: JA
authors.lastname: Calbet
mesh_terms: D000328:Adult; D015308:Anaerobic Threshold / Q000502:physiology; D001706:Biopsy; D001823:Body Composition / Q000502:physiology*; D015444:Exercise / Q000502:physiology; D006801:Humans; D007719:Knee Joint / Q000502:physiology; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000166:cytology / Q000502:physiology; D018995:Myosin Heavy Chains / Q000378:metabolism; D010101:Oxygen Consumption / Q000502:physiology; D010806:Physical Education and Training / Q000379:methods*; D010809:Physical Fitness / Q000502:physiology*; D012420:Running / Q000502:physiology; D012916:Soccer / Q000502:physiology*; D014891:Weight Lifting / Q000502:physiology*
chemical_list: D018995:Myosin Heavy Chains