Effects of Dynamic Strength Training to Prevent Lower Limb Injuries Among Novice Long Distance Runners: An Experimental Study

Ambreen Shahzad, Khalid Aziz, S. Ali, M. Fahim, Sajid Khan
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Abstract

Background/Purpose: Novice long distance runners may contribute to develop common lower limb injuries related to running. Strengthening hip or knee alone does not appear to prevent these injuries. Correction of running mechanics along with proper plan of regime for strengthening of lower limb is needed. The purpose of the current study was to investigate the effects of 6 weeks dynamic strength training to prevent lower limb injuries among novice long distance runners. Methods: This was an experimental study including novice runners (n=30, 18-60 years old, <2 years running experience) to evaluate the effects of dynamic strength training program specially designed under the supervision of expert physiotherapists to minimize lower limb injuries and pain. Participants were engaged in a 6-week extensive training program, three times per week using guided program comprising of various forms of exercises to strengthen their lower limb for prevention of common running injuries. Pre and Post “Knee Outcome Survey (KOS)” was measured to evaluate outcome. Results: Knee Outcome Survey Activities of Daily Living Scale (ADLS) pre training mean score was found to be 24.29 ± 5.9 whereas post training effects was 39.19 ± 2.45 with significant p-value of 0.000. In ADLS of KOS Pain variable outcome measure asked symptom that affects activity moderately the responses were 36.7% in pre whereas 0% after training. Weakness was responded mostly affecting activity moderately in 30% patients while after training it was reduced to 0%. Conclusion: A six-week dynamic strength training program may help to reduce lower limb injuries among novice long distance runners under the supervision of skilled physical therapist.
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动态力量训练预防长跑新手下肢损伤的实验研究
背景/目的:新手长跑运动员可能会发展出与跑步相关的常见下肢损伤。单靠加强髋部或膝关节似乎并不能预防这些损伤。需要对跑步力学进行修正,并制定适当的下肢强化运动方案。本研究的目的是调查6周动态力量训练对新手长距离跑步者下肢损伤的预防效果。方法:本研究采用实验方法,选取30名跑步新手(年龄18-60岁,跑步经验<2年),在专业物理治疗师的指导下,专门设计动态力量训练方案,以减少下肢损伤和疼痛。参与者参加了一项为期6周的广泛训练计划,每周三次,使用由各种形式的运动组成的指导计划来加强他们的下肢,以预防常见的跑步损伤。测量“膝关节预后调查(KOS)”前后的结果来评估结果。结果:膝关节预后调查日常生活活动量表(ADLS)训练前平均得分为24.29±5.9分,训练后平均得分为39.19±2.45分,p值为0.000。在KOS的ADLS疼痛可变结果测量中,训练前的应答率为36.7%,而训练后的应答率为0%。在30%的患者中,虚弱反应主要影响活动,而在训练后,虚弱反应减少到0%。结论:在熟练的物理治疗师的指导下,为期六周的动态力量训练计划可能有助于减少新手长跑运动员的下肢损伤。
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