Please use this identifier to cite or link to this item: https://hdl.handle.net/10321/3977
Title: The immediate effect of lumbar spine manipulation, thoracic spine manipulation and placebo manipulation on range of motion and bowling speed in asymptomatic male and female indoor cricket bowlers
Authors: Nayager, Prasanthi 
Keywords: Lumbar spine manipulation;Thoracic spine manipulation;Placebo manipulation;Range of motion;Bowling speed;Asymptomatic;Indoor cricket bowlers
Issue Date: 30-Nov-2020
Abstract: 
Background:
Cricket bowling is a manoeuvre that consists of a sequence of body motions
utilising the entire kinematic chain. Cricket like many sports is played both indoor
and outdoor. To eliminate the factors of weather (dew and wind) and nature
(grass top pitchers) the following study was conducted on indoor cricket bowlers.
The phrase ‘proximal stability for distal mobility’ is best suited, as the lower
extremities, pelvis and trunk play a vital role and assist the upper extremities in
the bowling action. Therefore, bowling should be known as a combined
movement of the entire body, culminating with rapid motions of the upper
extremity. Restricted motion within a joint segment could lead to adverse
changes in the surrounding muscles, tendons, and ligaments of the trunk.
Restricted motion of the trunk and pelvis may result in abnormal loads being
applied on the peripheral joints, thus resulting in injuries or a decline in an
athlete’s performance. Spinal manipulation therapy is a technique that is used to
improve flexibility and mobility in a joint. This study focused on the effects of SMT
on the joint range of motion (trunk) and bowling speed.
Objectives:
The main objective of this study was to assess the immediate effects of lumbar
spine, thoracic spine, and placebo manipulation on the range of motion of the
thoracic and lumbar spine, as well as the bowling speed of the participants.
Methods:
A sample of asymptomatic male and female cricket bowlers (60 in total), playing
for schools, local clubs and at provincial level were divided into three groups of
10 each. Group 1a and Group 1b received thoracic spine manipulation, Group
2a and Group 2b received lumbar spine manipulation and Group 3a and Group
3b received placebo spinal manipulation. The range of motion of the thoracic and
lumbar spine was measured pre and post manipulation using a digital inclinometer. Bowling speed was measured pre and post warm-up and
manipulation using a speed radar. The participants’ perception of changes in
bowling speed post manipulation were also recorded. SPSS version 25 was used
to statistically analyse the data.
Results:
There were statistically significant increases in thoracic range of motion post
thoracic manipulation in male and female participants. Thoracic spine
manipulation enhanced bowling speed significantly in male and female
participants. Lumbar spine manipulation increased lumbar range of motion and
thoracic range of motion, especially in the female athletes. However, it did not
impact bowling speed. Post placebo manipulation showed that there were no
significant differences in range of motion and bowling speed. However, both
thoracic and lumbar manipulation showed significant changes in range of motion,
compared to placebo manipulation.
Conclusion:
This study supported the findings of several authors, that spinal manipulation
significantly influences athletes’ performance. In this study, post thoracic spine
manipulation bowling speed increased significantly in both male and female
athletes. It was also evident that female participants’ range of motion increased
overall except for extension of the lumbar spine more post manipulation, while
male participants had a higher bowling speed average.
Description: 
Dissertation submitted in partial compliance with the requirements for the Master’s Degree in Technology: Chiropractic, Durban University of Technology, 2020.
URI: https://hdl.handle.net/10321/3977
DOI: https://doi.org/10.51415/10321/3977
Appears in Collections:Theses and dissertations (Health Sciences)

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