Electromyographical Differences Between the Hyperextension and Reverse-Hyperextension

Cuthbert, M, Ripley, NJ, Suchomel, TJ, Alejo, R, McMahon, JJ, and Comfort, P. Electromyographical differences between the hyperextension reverse-hyperextension. J Strength Cond Res 35(6): 1477–1483, 2021—The aims of this study were to compare muscle activation erector spinae (ES), gluteus maximus (GMax), biceps femoris (BF) during (HE) reverse-HE (RHE) exercises. Ten subjects (age, 23 ± 4 years; height, 175.9 6.9 cm; mass, 75.2 9.7 kg) had electromyography (EMG) electrodes placed on ES, GMax, BF muscles in accordance with SENIAM (Surface EMG for Non-Invasive Assessment Muscles) guidelines. Subjects performed 3 maximum voluntary isometric contraction trials lumbar extension hip using a handheld isokinetic dynamometer, respectively, normalize HE RHE Three repetitions each exercise executed randomized order. High reliability (intraclass correlation coefficient ?0.925) was observed low variability (coefficient variation [CV] < 10%) all but GMax phase (CV = 10.64%). During flexion phases, exhibited significantly greater (p ? 0.024; 34.1–70.7% difference) peak compared tested. Similarly, resulted mean 0.036; 28.2–65.0% except 9.960). Therefore, could be considered as higher-intensity posterior chain HE, potentially eliciting increases strength muscles.