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J Strength Cond Res. 2018 May 15. doi: 10.1519/JSC.0000000000002624. [Epub ahead of print]

Influence of Adding Single-Joint Exercise to a Multijoint Resistance Training Program in Untrained Young Women.

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Center for Biological and Health Sciences, University of the Amazon, Belém, Pará, Brazil.
Group of Studies in Physical and Sports Training - GET, Federal University of Pará, Castanhal, Pará, Brazil.
College of Physical Education and Dance, Federal University of Goiás, Goiânia, Goiás, Brazil.
Center for Biological and Health Sciences, University Center of the State of Pará, Belém, Pará, Brazil.
Center for Health, Exercise and Sport Science, Southampton Solent University, Southampton, United Kingdom.
Faculty of Physical Education, Federal University of Pará, Castanhal, Pará, Brazil.


Barbalho, M, Gentil, P, Raiol, R, Fisher, J, Steele, J, and Coswig, V. Influence of adding single-joint exercise to a multijoint resistance training program in untrained young women. J Strength Cond Res XX(X): 000-000, 2018-The aim of the present study was to investigate the effects of adding single-joint (SJ) exercises to a multijoint (MJ) resistance training (RT) program on muscle strength and anthropometric measures of young women. Twenty untrained women were divided into a group that performed only MJ exercises or a group that performed both SJ and MJ exercises (MJ + SJ). Before and after 8 weeks of training, the participants were tested for 10 repetition maximum (10RM). Flexed arm circumference and triceps and biceps skinfold thickness were also measured. Both groups significantly decreased biceps (-3.60% for MJ and -3.55% for MJ + SJ) and triceps skinfold (-3.05% for MJ and -2.98% for MJ + SJ), with no significant difference between them. Flexed arm circumference significantly increased in both groups; however, increases in MJ + SJ (4.39%) were significantly greater than MJ (3.50%). Increases in 10RM load in elbow extension (28.2% for MJ and 28.0% for MJ + SJ), elbow flexion (29.8% for MJ and 28.7% for MJ + SJ), and knee extension (26.92% for MJ and 23.86% for MJ + SJ) were all significant and not different between groups. The results showed that adding SJ exercises to an MJ RT program resulted in no benefits in muscle performance or anthropometric changes in untrained women.

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