Electromyographic Analysis of Three Different Types of Lat Pull-Down

Abstract

The purpose of this work was to evaluate the activity of the primary motor muscles during the performance of 3 lat pull-down techniques through surface electromyography (EMG). Twenty-four trained adult men performed 5 repetitions of behind-the-neck (BNL), front-of-the-neck (FNL), and V-bar exercises at 80% of 1 repetition maximum. For each technique, the root mean square from the EMG signal was registered from the pectoralis major (PM), latissimus dorsi (LD), posterior deltoid (PD), and biceps brachii (BB) and further normalized in respect to that which presented the highest value of all the techniques. A series of two-way repeated measures analysis of variance was used to compare the results, with Tukey-Kramer as the post hoc test and alpha = 0.05. During the concentric phase, PM value showed the FNL to be significantly higher than V-bar/BNL and V-bar higher than BNL. During the eccentric phase, FNL/V-bar was higher than BNL. For LD, there was no difference between techniques. PD presented BNL higher than FNL/V-bar and FNL higher than V-bar in the concentric phase and BNL higher than V-bar in the eccentric phase. BB exhibited BNL higher than V-bar/FNL and V-bar higher than FNL in both concentric and eccentric phases. Considering the main objectives of lat pull-down, we concluded that FNL is the better choice, whereas BNL is not a good lat pull-down technique and should be avoided. V-bar could be used as an alternative.

Dissociated Time Course of Muscle Damage Recovery Between Single- and Multi-Joint Exercises in Highly Resistance-Trained Men

“…During back exercises, there is a relative contribution of elbow flexors with a concomitant activity of shoulder extensors, such as latissimus dorsi, teres major, and pectoralis major (external portion) (12,13,23). However, biceps curl exercise is performed mainly by elbow flexor muscles (9,10).…”

An Electromyographic Analysis of Muscle Activation in the Latissimus Dorsi, Pectoralis Major, Deltoid, Trapezius, and Biceps Brachii Muscles According to the Type of Lat Pull Down Exercise

“…랫풀다운(lat pull-down; LPD)은 일반인과 운동선수 모 두에서 흔히 수행되는 운동 중 하나이지만 어깨 손상을 유발할 수 있는 것으로 보고되었다 (Andersen et al, 2014;Lusk et al, 2010;Signorile et al, 2002;Snyder & Leech, 2009;Sperandei et al, 2009). 특히, 목뒤로 당기는 랫풀다 운(behind the neck lat pull down; BLPD)은 어깨의 충돌 기전을 통해 돌림근띠(rotator cuff)에 스트레스를 주며, 운 동참여자의 머리를 과도하게 앞으로 기울이게 하여 목 부 위의 손상 위험도 있다 (Reeves et al, 1998a(Reeves et al, , 1998b)고 알 려져 있다.…”

Muscle Activation Pattern During Isometric Ab Wheel Rollout Exercise in Different Shoulder Angle-Positions

“…11,14 During the dynamic movement, the Pectoralis Major (sternal portion), Latissimus Dorsi and Teres Major are the major acting muscles, 10,11,13,[15][16][17] while the Rectus Abdominis and the Erector Spinae act active in isometric contractions (trunk maximal isometric contractions of the Ab Wheel Rollout exercise keeping the knees fixed on the floor and the arms taut. 21 To perform the exercise, all subjects were randomly assessed in the following three positions related to the angle between the arms and trunk, in random order: arms aligned vertically with the Ab Wheel Rollout exercise (neutral); 90 degrees and 150 degrees.…”