Exercise-Induced Hypoalgesia Differences Between Upper and Lower Limbs Resistance Training Interventions

Exercise-Induced Hypoalgesia Differences at Proximal and Distal Regions After Applying a Lower Limb Resistance Training or an Upper Limb Resistance Training Protocol: A Randomized Controlled Trial in Healthy Participants

This randomized controlled trial with healthy subjects aims to compare exercise-induced hypoalgesia among three groups: one utilizing a lower limb resistance training intervention, another using an upper limb resistance training, and a control group. The exercise protocol involves 3 sets of 5 repetitions of resistance exercises (brachial biceps curl and leg extensions). Exercise-induced hypoalgesia will be assessed by measuring pressure pain thresholds in the thigh and elbow, comparing exercise interventions with the control group. Additionally, a secondary objective is to compare the lower limb and upper limb resistance training groups in terms of their effects on pressure pain thresholds in the thigh and elbow. Thus, the study anticipates observing differences in local and distal hypoalgesia based on the trained region.

Inclusion Criteria:

• Asymptomatic subjects aged between 18 and 64 years.

Exclusion Criteria:

• Cardiovascular, respiratory, metabolic, neurological, or osteomuscular signs or pathologies.
• History of epilepsy.
• Pregnant.
• Participants who present any type of pain on the day of the measurements or who have frequently suffered pain during the previous 12 weeks.