Comparison of a high-intensity and a low-intensity lumbar extensor training program as minimal intervention treatment in low back pain: a randomized trial

A Web-Based Intervention to Improve and Prevent Low Back Pain Among Office Workers: A Randomized Controlled Trial

“…21 In this study, a web-based intervention led to improvements in healthrelated quality of life in office workers with subacute NLBP, as measured by the EQ-5D-3L. Two previous studies reported that a face-to-face, supervised, land-based program resulted in a beneficial effect on health-related quality of life (as measured by the Medical Outcomes Study 36-Item Short-Form Health Survey) in patients with chronic NLBP 17 and in healthy workers. 34 The present study also identified a significant correlation between disability and health-related quality of life, in agreement with a previous cross-sectional study involving patients with acute, subacute, 24,39 and chronic NLBP.…”

Long-term effects of an outpatient rehabilitation program in patients with chronic recurrent low back pain

“…Among the few studies to include follow-up evaluations, Harts et al [12] (16 weeks after lumbar extensor training) and Helmhout et al [15] (9 months after randomization) reported improvements in muscle strength, functional disability, and QoL. As opposed to our study, Helmhout and colleagues included only male subjects in their 12 week resistance training program, and the training was restricted to exercises strengthening the lumbar extensor muscles in most of the respective studies published to date [15]. Our resistance training program incorporated exercises to improve wholebody muscular strength, since former studies demonstrated the superiority of this approach [13].…”

“…Most of these studies performed RT over 8-16 weeks and lacked followup evaluations after the end of the training period [9,11,13,14]. Long-term benefits were only found by Helmhout et al [15] and Harts et al [12] who performed isolated lumbar extensor muscle RT over a period of 3 months and 8 weeks, respectively, and evaluated the outcomes 9 months after randomization and 16 weeks after treatment.…”

Kettlebell training for musculoskeletal and cardiovascular health: a randomized controlled trial

“…For instance, in a study by Maul and coworkers (24) the maximum resistance applied allowed ≥15 repetitions (~60-65% 1RM) to be completed, which would be considered as moderate resistance. Contradictory to the general moderately positive outcomes of highintensity resistance training in the treatment of low-back pain, Helmhout et al (25) could not show a significant increase in low-back functioning following a 12-week progressive resistance training protocol specifically targeting the lumbar extensor muscle groups with loads corresponding to approximately 50-70% of 1RM.…”