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Title: The immediate effect of sham laser and three different spinal manipulative protocols on kicking speed in soccer players
Authors: Deutschmann, Kyle Colin 
Issue Date: 2011
In terms of kicking speed the instep kicking technique is the most effective and commonly used method. Immobilization or restricted motion within a joint segment, results in adverse changes in the surrounding ligaments, tendons and muscular tissue. To improve joint mobility and thus improving flexibility, this study focused on spinal manipulation.
The main purpose of this study was to determine the immediate effectiveness of lumbar spine and sacroiliac manipulation on the range of motion (ROM) of the lumbar spine and sacroiliac joints as well as the kicking speed of the subjects.
Forty asymptomatic soccer players, playing for the regional Premier League team or higher, were divided into four groups of 10 each. Group 1 received lumbar spine manipulation, Group 2 received sacroiliac (SI) joint manipulation, Group 3 received combined lumbar spine and SI joint manipulation and Group 4 received the sham laser intervention (placebo/control). Pre and post warm-up and post intervention lumbar and SI joint ROM were measured using a digital inclinometer. Kicking speed was measured post warm-up and post intervention with a Speed Trac™ Speed Sport Radar. The subjects’ perception of a change in kicking speed post intervention was also recorded. SPSS version 15.0 was used to analyse the data.
Pre and post outcome measurements were compared using a p value of < 0.05 to indicate statistical significance. Statistically significant ROM increases were noticed in left and right lumbar rotation motions post lumbar manipulative intervention. Lumbar extension, left and right lumbar rotation and SI joint extension ROM increased post combination of lumbar spine and SI joint manipulation. There
was a significant increase in kicking speed post intervention for all three manipulative intervention groups. A significant correlation was seen between subjects’ perception of change in kicking speed post intervention and the objective results obtained.
Lumbar spine and SI joint manipulation is an effective intervention for short-term increase in kicking speed.
Dissertation submitted in partial compliance with the requirements for the MTech: Chiropractic, Durban University of Technology, Durban, South Africa, 2011.
Appears in Collections:Theses and dissertations (Health Sciences)

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