title: Kinematics and Kinetics of Multiple Sets Using Lifting Straps During Deadlift Training.
abstract: The deadlift is a fundamental exercise used in the development of whole body strength and a common element in resistance training programs for all levels. However, many practitioners report the fatigue of forearm muscles and possibly a lack of grip strength as obstacles to exercise performance, which may lead to the use of ergogenic aids, such as lifting straps. The objective of this study was to evaluate kinematic variables during the execution of multiple sets of deadlift with (WS) and without (NS) lifting straps. Eleven subjects (25 ± 3.3 years) with an average of 4 ± 2.6 years of resistance training experience were enrolled in the study. After the 1 repetition maximum (1RM) test WS and NS, subjects performed separate trials of 3 sets to failure at 90% of 1RM in a counterbalanced fashion. With straps resulted in lower speed (0 to -25%) (-3 to -10%) and greater force (20-28%) and duration (concentric phase: 0-13%) when compared with NS. Therefore, it is concluded that the use of straps directly influences exercise performance that requires manual grip strength, increasing the amount of work performed by the target muscles.
authors.affiliation: 1Superior School of Physical Education, Federal University of Pelotas, Pelotas, Brazil; 2Faculty Anhanguera of Pelotas, Pelotas, Brazil; 3College of Physical Education, University of Brasilia, Brasília, Brazil; 4Institute of Exercise Physiology and Wellness, University of Central Florida, Orlando, Florida; and 5Combat Sports and Martial Arts Research Group, University of São Paulo, São Paulo, Brazil.
authors.forename: Victor S
authors.initials: VS
authors.lastname: Coswig
authors.forename: Diogo Felipe
authors.initials: DF
authors.lastname: Machado Freitas
authors.forename: Paulo
authors.initials: P
authors.lastname: Gentil
authors.forename: David H
authors.initials: DH
authors.lastname: Fukuda
authors.forename: Fabrício Boscolo
authors.initials: FB
authors.lastname: Del Vecchio
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena / Q000502:physiology; D018592:Cross-Over Studies; D006801:Humans; D007700:Kinetics; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D011897:Random Allocation; D055070:Resistance Training / Q000295:instrumentation* / Q000379:methods*