Experimental assessment
At least 48 h but not more than 1 week after 10RM testing, sEMG analysis was conducted on each participant using a Delsys EMG Trigno™ Wireless EMG systems (Delsys Corporation, Boston, MA, USA) connected to a PC running EMGworks® 4.7.9 software and sampling at 2000 Hz. The sEMG was synced to a Vicon motion capture system (Vicon Motion Systems Limited, Oxford, UK) using 6 Vicon VERO cameras at a sampling rate of 100 Hz. Reflective markers were placed on the lateral aspect of the acromion, the medial and lateral epicondyle of the elbows, and the styloid process of the radius and ulna. Participants wore a tank top or sports bra to facilitate data acquisition.For the sEMG assessment, participants were prepared by lightly shaving and then abrading the skin with an alcohol swab in the desired areas of sensor attachment to ensure stable contact and low skin impedance. After preparation, wireless sEMG smart sensors were attached parallel to the fiber direction of the biceps brachii (BB), anterior deltoid (AD) and brachioradialis (BR). Electrode placement was made on the right arm of each participant. The BB electrode was placed on the line between the medial acromion and the fossa cubit at 1/3 from the fossa cubit and the AD electrode was placed at one finger width distal and anterior to the acromion. These methods are consistent with the recommendations of SENIAM (Surface Electromyography for Non-Invasive Assessment of Muscles)