Grip width and forearm orientation effects on muscle activity during the lat pull-down

Stephen J. Lusk, Bruce D. Hale, Daniel M. Russell

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Based on electromyographic (EMG) studies, an anterior (in front of the face) wide grip with a pronated forearm has been recommended as the optimal lat pull-down (LPD) variation for strengthening the latissimus dorsi (LD) (Signorile, JF, Zink, A, and Szwed, S. J Strength Cond Res 16:539-546, 2002; Wills, R, Signorile, J, Perry, A, Tremblay, L, and Kwiatkowski, K. Med Sci Sports Exerc 26: S20, 1994). However, it is not clear whether this finding was because of grip width or forearm orientation. This study aimed to resolve this issue by comparing wide-pronated, wide-supinated, narrow-pronated, and narrowsupinated grips of an anterior LPD. Twelve healthy men performed the 4 grip variations using an experimentally determined load of 70% of 1 repetition maximum. Two trials of 5 repetitions were analyzed for each grip type. Participants maintained a cadence of 2-second concentric and 2-second eccentric phases. The grip widths were normalized for each individual by using a wide grip that corresponded to their carrying width and a narrow grip that matched their biacromial diameter. Surface EMG of the LD, middle trapezius (MT), and biceps brachii (BB) was recorded, and the root mean square of the EMG was normalized, using a maximum isometric voluntary contraction. Repeated-measures analysis of variance for each muscle revealed that a pronated grip elicited greater LD activity than a supinated grip (p < 0.05), but had no influence of grip type on the MT and BB muscles. Based on these findings, an anterior LPD with pronated grip is recommended for maximally activating the LD, irrespective of the grip width (carrying width or biacromial diameter).

Original languageEnglish (US)
Pages (from-to)1895-1900
Number of pages6
JournalJournal of Strength and Conditioning Research
Volume24
Issue number7
DOIs
StatePublished - Jul 2010

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Hand Strength
Forearm
Muscles
Superficial Back Muscles
Isometric Contraction
Sports
Analysis of Variance

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Medicine(all)

Cite this

Lusk, Stephen J. ; Hale, Bruce D. ; Russell, Daniel M. / Grip width and forearm orientation effects on muscle activity during the lat pull-down. In: Journal of Strength and Conditioning Research. 2010 ; Vol. 24, No. 7. pp. 1895-1900.
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Grip width and forearm orientation effects on muscle activity during the lat pull-down. / Lusk, Stephen J.; Hale, Bruce D.; Russell, Daniel M.

In: Journal of Strength and Conditioning Research, Vol. 24, No. 7, 07.2010, p. 1895-1900.

Research output: Contribution to journalArticle

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