Assessment of muscle strength of extension of trunk: influence of gender and state of training

Abstract

Introduction: Trunk extensor muscles strength is important for low back prevention pain. However, it is not established whether a non-specific training for this region is sufficient. Objective: Compare trunk muscle extensors strength of the sedentary subjects and resistance training practitioners (RT) who did not perform any specific exercises for this region. Methods: It was recruited 105 healthy subjects (61 men and 44 women) with age between 18 and 44 years who were divided into groups trained and sedentary. Experienced in RT trained squat and military press. The remaining subjects had no experience in RT. Results: There were differences in strength between trained and sedentary men (p = 0.002) and gender (p = 0.0003), there was no difference between women trained and sedentary (p≥0.05). Conclusion: RT non specific increase the strength of the lumbar region in men. However, it is not enough in the female public.