The Effects of Either a Mirror, Internal or External Focus Instructions on Single and Multi-Joint Tasks.

ABSTRACT: Training in front of mirrors is common, yet little is known about how the use of mirrors effects muscle force production. Accordingly, we investigated how performing in front of a mirror influences performance in single and multi-joint tasks, and compared the mirror condition to the established performance effects of internal focus (IF) and external focus (EF) instructions in a two part experiment. In the single-joint experiment 28 resistance-trained participants (14 males and 14 females) completed two elbow flexion maximal voluntary isometric contractions under four conditions: mirror, IF, EF and neutral instructions. During these trials, surface EMG activity of the biceps and triceps were recorded. In the multi-joint experiment the same participants performed counter-movement jumps on a

SUBMITTER: Halperin I 

PROVIDER: S-EPMC5127520 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature