James Fisher1, Stewart Bruce-Low, Dave Smith. 1. Department of Health, Exercise and Sport Science, Southampton Solent University, East Park Terrace, Southampton SO14 0YN, UK. james.fisher@solent.ac.uk
Abstract
OBJECTIVE: To consider the efficacy of 10 weeks of Romanian deadlift (DL) training in increasing lumbar extension strength compared to isolated lumbar extension (LUMX) training. DESIGN: Comparison of pre- and post-test data for Romanian deadlift 1RM, and lumbar extension torque between and within groups. PARTICIPANTS: Male trained subjects (n = 36; (x¯±SD) 24.9 ± 6.5 years; 178.5 ± 5.2 cm; 81.6 ± 10.0 kg). MAIN OUTCOME MEASURES: Pre- and post-testing included a Romanian deadlift 1RM and isometric strength tests every 12° through full range of motion on the MedX lumbar extension machine (MedX, Ocala, FL). RESULTS: Repeated measures analysis of variance (ANOVA) with Bonferroni adjustments revealed that 1RM Romanian deadlift significantly increased from pre- to post-test in the DL group (p < 0.008; 143.3 ± 23.4 kg to 166.3 ± 21.9 kg) and the LUMX group (p < 0.008; 135.8 ± 23.1 kg to 146.0 ± 25.5 kg). In contrast, tested functional torque (TFT) significantly increased at 6 out of 7 joint angles (p < 0.008) for the LUMX group only. The control group showed no significant differences pre- to post-test. CONCLUSIONS: These data suggest that the Romanian deadlift does not enhance lumbar extension torque. However, performing specific isolated lumbar extension training appears to improve both lumbar extension torque and Romanian deadlift 1RM.
RCT Entities:
OBJECTIVE: To consider the efficacy of 10 weeks of Romanian deadlift (DL) training in increasing lumbar extension strength compared to isolated lumbar extension (LUMX) training. DESIGN: Comparison of pre- and post-test data for Romanian deadlift 1RM, and lumbar extension torque between and within groups. PARTICIPANTS: Male trained subjects (n = 36; (x¯±SD) 24.9 ± 6.5 years; 178.5 ± 5.2 cm; 81.6 ± 10.0 kg). MAIN OUTCOME MEASURES: Pre- and post-testing included a Romanian deadlift 1RM and isometric strength tests every 12° through full range of motion on the MedX lumbar extension machine (MedX, Ocala, FL). RESULTS: Repeated measures analysis of variance (ANOVA) with Bonferroni adjustments revealed that 1RM Romanian deadlift significantly increased from pre- to post-test in the DL group (p < 0.008; 143.3 ± 23.4 kg to 166.3 ± 21.9 kg) and the LUMX group (p < 0.008; 135.8 ± 23.1 kg to 146.0 ± 25.5 kg). In contrast, tested functional torque (TFT) significantly increased at 6 out of 7 joint angles (p < 0.008) for the LUMX group only. The control group showed no significant differences pre- to post-test. CONCLUSIONS: These data suggest that the Romanian deadlift does not enhance lumbar extension torque. However, performing specific isolated lumbar extension training appears to improve both lumbar extension torque and Romanian deadlift 1RM.
Authors: David B Berry; Jennifer Padwal; Seth Johnson; Erin K Englund; Samuel R Ward; Bahar Shahidi Journal: BMC Musculoskelet Disord Date: 2019-06-18 Impact factor: 2.362
Authors: Alexander Hammond; Craig Perrin; James Steele; Jürgen Giessing; Paulo Gentil; James P Fisher Journal: PeerJ Date: 2019-07-26 Impact factor: 2.984