Phadnis TR and Bhave SM
Background: Hamstring group of muscle are postural muscle and as they are biarticular, they has tendency to shorten even under normal circumstances. Since they are superficial two joint muscle, they tend to become very tight leading to muscle imbalance, which can give rise to number of postural problems and leave us with open muscle injury.
Prevalence & incidence of Hamstrings tightness in normal individuals in day today life is high due to limited activity and lack of regular exercise. It has been observed that 75% of boys and 35% of girls aged 10 revealed reduced flexibility of hamstrings.
Aim & Objectives: To study and compare the effectiveness of Mulligan Bent Leg Raise technique and Hold Relax PNF technique in High school going students with hamstring muscle tightness.
Methodology: Sixty students were selected from high schools and study group were formed by alternate method of sampling. Group A underwent mulligan bent leg raise (BLR) and Group B underwent Proprioceptive neuromuscular facilitation (PNF) hold relax technique. The two groups were evaluated on the basis of Active knee extension test (AKE) test. Intervention used to improve AKE range of motion consisted of 15 session conducted over duration of 3 weeks. Each session lasted for 15 minutes consisting of 3 repetitions respectively done on 5 consecutive days per week. The two groups were compared and results obtained using unpaired t test and repetitive measure ANOVA test.
Results: In Group A 43.3% were male and 56.7% were females, in Group B 53.3% were male 46.7% were female. Comparison of baseline values of mean AKE ROM of Right side in Group A was 135.2 and in Group B was 138.8. For left side the mean AKE ROM value in Group A was 136.3 and in Group B were 140.3. There is no significant statistical difference between baseline values. Comparison of mean of difference in AKE ROM from post intervention value of right side the mean of difference on 5 day for group A was 19.1 and for group B it was 6.93. On day 10 for Group A, it was 33.16 and for Group B it was 19.9, on day 15 for Group A it was 42.5 and for Group B it was 33.76. Comparison was done with unpaired t-test. On comparison there was statistically significant difference between group A and B p-value <0.0001. Mean of difference in AKE ROM from pre intervention value of left side the mean of difference on 5 day for Group A was 18.8 and for Group B it was 7.13. On day 10 for Group A it was 33.13 and for Group B it was 20.5. On day 15 for Group A it was 42.36 and for Group B it was 34.67. Comparison was done with unpaired t-test. On comparison there was statistically significant difference between Group A and B, p-value <0.0001.
Conclusion: Effect of Mulligan Bent Leg Raise Technique shown more reduction in hamstring tightness, and improves Active knee extension range of motion compare to PNF hold relax technique.
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