Differences in trunk and lower extremity muscle activity during squatting exercise with and without hammer swing

Abstract

Perturbation exercises enhance lower limb and trunk muscles, and adding swing perturbation while loading during exercise might improve muscle activation or strength. This study aimed to check variations in trunk and lower limb muscle activity during conventional isometric squats, and whether it will change with or without swing using the Hammerobics-synchronized squat method. Twelve healthy men participated in this study. Activities for the abductor hallucis, tibialis anterior, tibialis posterior, peroneus longus, rectus femoris, biceps femoris long head, semitendinosus, gluteus maximus, multifidus, and internal oblique muscles were measured using surface electromyography during a Hammerobics-synchronized squat and conventional isometric squat. Muscle activities were statistically compared between squat methods. Hammerobics-synchronized squats significantly activated the abductor hallucis, tibialis anterior, tibialis posterior, peroneus longus, semitendinosus, and multifidus muscles, in both phases, compared with the conventional isometric squats. The Hammerobics-synchronized squat exercise can be considered for trunk and foot stability exercise.

Effect of Load Distribution on Trunk Muscle Activity with Lunge Exercises in Amateur Athletes: Cross-Sectional Study

“…The 5 cm self-adhesive Valutrode ® surface electrodes were placed following the recommendations of the SENIAM project, ref. [ 43 ] with an interelectrode distance of 20 mm [ 44 ].…”

Optical Myography-Based Sensing Methodology of Application of Random Loads to Muscles during Hand-Gripping Training

“…For example, perturbation leads to more precise control of toe movement based on more effective covariation of redundant lower limb segments during walking [ 19 ]. A swinging load applied during bench press training increases the number of activated skeletal muscles or increases the activity level of the skeletal muscles [ 22 , 23 ]. Control of the forearm skeletal muscles during wrist flexion and extension perturbations involves greater co-contraction of agonist and antagonist skeletal muscles of the forearm [ 24 , 25 ], which results in greater wrist joint stiffness, which is a measure of the rigidity of the wrist joint [ 26 ].…”

Effects of full-body exercise-based pulmonary rehabilitation in patients with idiopathic pulmonary fibrosis: a systematic review and meta-analysis protocol

“… 16 17 In terms of comorbidities, exercise could affect other body systems and functions, such as improving cardiovascular function, 18 19 reducing mood disturbance, 20 21 and improving skeletal muscle function. 22 23 …”

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