Faculty of Health Sciences
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Item The effect of lumbar spine, sacro-iliac and/or hip joint manipulation on muscle activity and performance in road cycling(2018) Fuller, Pia Alexa; Matkovich, Grant; Puckree, ThreethambalBACKGROUND Cycling is a highly competitive sport where athletes are continuously looking for ways to improve their performances in order to gain what might be seconds over their components. Chiropractic manipulation has been shown to restore the balances of the kinematic chain and stimulate motoneuron pools and therefore by implementing this technique into their training regime, it may show improvement in muscle activity distributions, demands and efficiency thus resulting in better cycling performance. OBJECTIVES To determine the participants muscle activity (amplitude of surface EMG) and cycling performance in terms of power output (W), cycling speed (km/h), cadence (rpm), and completion time (seconds) before and after lumbar spine, sacro-iliac joint and/or hip joint manipulation intervention. METHOD Sixty-one asymptomatic amateur cyclists performed two 1.5km time-trials pre- and post- manipulative intervention. The pre- and post-intervention data of muscle activity (amplitude of surface EMG) and cycling performance (power output (W), cycling speed (km/h), cadence (rpm), and completion time (seconds)) were captured. IBM SPSS version 24 was used to analyse the data. A p value <0.05 was considered as statistically significant. RESULTS There was no significant change in muscle activity post-lumbar spine manipulation. There was a significant decrease in cycling performance post-lumbar spine manipulation. Sacro-iliac joint showed no significant change in muscle activity post-manipulation. The study data demonstrated a significant decrease in cycling performance post sacro-iliac joint manipulation. There was no significant change in muscle activity post hip joint manipulation. A significant decrease in power output and speed post hip joint manipulation, no significant effect of overall performance. Combination manipulation intervention showed a significant decrease in muscle activity of iliopsoas muscle. Combination manipulation showed no significant change in cycling performance. CONCLUSIONS There was a visual trend that showed, although there was a decrease in overall cycling performance in the lumbar spine and sacro-iliac joint manipulation groups post-intervention, with no significant changes in the hip joint and combination manipulation groups post- intervention – these athletes were more efficient cyclists post manipulative intervention particularly those who received the combination of adjustments.Item A study of the relative effectiveness of the lumbar roll and the spinous push technique in the treatment of facet syndrome in the lumbar spine(1996) Jansen, Petrus C.; Till, A. G.Lower back pain due to mechanical dysfunction is a common cause of pain and disability in mankind. Lumbar spine facet syndrome is a major aetiology in mechanical lower back painItem The effect of sacroiliac joint manipulation on lumbar extensor muscle endurance in asymptomatic individuals(2014) Jones, Kate; O'Connor, LauraBackground: Spinal manipulation has been shown to result in neurophysiological changes, most often noted in the paraspinal muscles. These effects have been associated with an increase in paraspinal muscle contractibility; it is unclear if this leads to an increase in paraspinal muscle endurance. Objectives: To determine the effect of sacroiliac joint (SIJ) manipulation compared to a placebo treatment of the SIJ on lumbar extensor muscle endurance time. Method: A randomised, placebo-controlled pre-test post-test experimental trial, involving 40 asymptomatic male participants divided into an intervention group receiving SIJ manipulation using an impulse adjusting instrument and a placebo group receiving a pre-load force without the delivery of an impulse thrust. Outcome measures were lumbar extensor muscle endurance time, surface electromyographic (SEMG) readings, lumbar spinal range of motion, paraspinal muscle length assessment and a subjective pain measurement. Results: There was a significant difference between the groups (p=0.004) with the SIJ manipulation group showing an increase in endurance time compared to the placebo group which showed a decrease. SEMG readings increased for both groups with no statistically significant difference between the groups (p>0.05). Only extension lumbar spinal range of motion significantly improved in both groups (p=˂0.001) with no significant differences between groups (p=0.876). Only one participant reported pain during the research procedure. Conclusions: SIJ manipulation may enhance the endurance of the paraspinal muscles. This study should be conducted in a larger sample to validate the findings.Item The relationship between core stability and bowling speed in asymptomatic male indoor action cricket bowlers(2008) Hilligan, Bruce KevinTo determine whether a relationship exists between core stability and bowling speed in Action Cricket bowlers. Methods: Thirty asymptomatic indoor Action Cricket fast and fast-medium bowlers were divided into two groups of 15 each, with Group A having well-developed core stability and group B having poorly-developed core stability. The concept of matched pairs was used for age and cricket experience in order to maintain homogeneity between the groups. The core stability and bowling speed of each participant was measured using a pressure biofeedback unit (PBU) and speed sports radar respectively. SPSS version 15.0 was used to analyse the data.Item The effect of a scuba diving cylinder on static lumbar spine posture(2002) Ananiadis, ChristopherThe purpose of this study was to evaluate the effect of wearing a scuba diving cylinder on static lumbar spine posture, in terms of clinical objective findings, namely radiographic changes in the lumbar lordosis, lumbosacral angle, lumbosacral disc angle, and the lumbar gravity line, during upright standing on land.