Heartbeat and EMG of the Brachioradialis Muscle

The data collection process is conducted with the participant seated on a chair. The arm is aligned with the forearm and hand, all positioned vertically along the torso (parallel to the ground). The armband is placed on the forearm, with EMG electrodes positioned on the brachioradialis muscle and the pulse sensor placed in the antecubital fossa (elbow crease), near the brachial artery. The study involves a total of 16 participants (including 6 women), aged between 21 and 57 years.

The dataset was collected from 16 volunteers (aged 21–57), following a non-invasive protocol involving EMG surface electrodes. Participants provided informed consent. No sensitive or identifying information is included.

The fatigue state is recorded only after the participant verbally confirms fatigue, following a few minutes of holding a 1 kg load. The entire data collection process, covering all four conditions, lasts between 3 and 4 minutes, depending on the participant.

Experimental States: Data is recorded under four conditions:

Rest without load

Rest with a 1 kg load

Fatigue with 1 kg load

Fatigue without load

Measured Signals

EMG signal (muscle activity)

Pulse heart signal (cardiac response)

Procedure: Sequential data acquisition conducted over 2500 epochs for each state.

Data Structure and Annotations

Each label is assigned to a matrix of 2496 line and 16 columns (for the 16 candidates) in mat format. 

EMG data

Rest without load (R): The user is at rest with no weight.

Rest with load (RO): The user is at rest while holding a 1 kg weight.

Fatigue without load (F): The user is fatigued after effort but without holding a weight.

Fatigue with load (FO): The user is fatigued after effort while holding a 1 kg weight.

Heartbeat

We keep the same name of data collection case as the EMG folder with adding H before (example: R will be HR).

Personal metrics

The personal metrics is collected contained: age, weight, height,forearm measurement and physical activity.