الفهرس 
Comparing effects of plyometrics closed kinetic chain and quadratus lumborum strengthening exercises
Abstract EnglishOnly 14 pages are availabe for public view
 |  | from | 176 |  |  |
| | | from | 176 | | |
Abstract
Background:Vertical jumping is considered an essential motor skill in a range of team sports including, volleyball, soccer, basketball and handball, Plyometrics improve jump height capabilities.Athletes use a counter movement vertical jump strategy to achieve maximum vertical jump height.Closed kinetic chain exercises like squat exercises are frequently prescribed in the training of sports which require jumping. Hip hiking which is the action of quadratus lumborum muscles is an exercise that improves vertical jump height. Purpose: to compare effect of plyometrics with closed kinetic chain and quadratus lumborum strengthening exercises on vertical jump height in non-professional athletes sports players.Design: pre- post measurements randomized controlled trial.Methods: Two hundred non-professional athletes sports players from different sports that require jumping abilities like volley ball, basketball and hand ball, were recruited from Cairo and Kafer Elsheik University, Egypt.140 players met the inclusion criteria and were randomly assigned into four groups each group was consisted of 35 players. All participant’s mean body mass index (BMI) value was 21±3.76 kg/m2, 21.44±1.681 kg/m2, 22.17±1.8 kg/ m2, 22.01±1.69 kg/m2.group (A) received plyometric exercise (Counter Movement Vertical Jump),group (B)received closed kinetic chain exercise (double limb body weight squat), group (C) received quadratus lumborum strengthening exercise (concentric active resisted exercise for quadratus lumborum) and the three groups received the exercises two times per week for eight weeks.group (D)received no exercise (control group).Results: statistical analysis revealed that there was significance difference in jump height in favor to plyometrics, closed kinetic chain and quadratus lumborum strengthening exercises compared with the control group that received no exercise and plyometric exercise revealed the most improvement in jump height then quadratus lumborum strengthening exercise then closed kinetic chain exercise group