Walking apnea at Low Lung VolumeWalking at normal breathing
Walking apnea at Low Lung Volume: Walking apnea at low Lung Volume Participants walk at 6 km/h (10% slope) on treadmill for 6 minutes. Participants in the experimental group will perform intermittent apneas at high lung volume with a density of 5 seconds, followed by a normal breath of 5 seconds until completing the 6 minutes)
Walking at normal breathing: Participants walk at 6 km/h (10% slope) on treadmill for 6 minutes. Participants in the control group will remain breathing normally for these 6 minutes.
Study summary
The aim of this randomized controlled study is to explore the hypoalgesic response of a 6 minutes of intermittent walking apneas training session at low lung volume in healthy subjects; also, as secondary objectives, to analyze the cardiovascular and respiratory response produced during the intervention.
Eligibility
Sex
ALL
Min age
18 Years
Max age
65 Years
Healthy volunteers
Accepted
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
* Pharmacological treatment.
* Participants who present any type of pain on the day of the measurements or who have frequently suffered pain during the previous 4 weeks.
Primary outcome measure(s)
Pain pressure threshold (PPT) on thumb, anterior tibial and spinous process of C7 — before and after intervention (up 30 minutes) PPT is tested on the dorsal base of the distal phalanx of the thumb on the dominant side and on the muscle belly of the tibialis anterior on the dominant side. The region to be pressed is marked with a pen. The patient is instructed to report with the first appearance of the sensation of "discomfort". An ascending ramp of 0.5 kg/cm/s is applied, at the rhythm of a metronome. The measurement is started on the thumb, and alternated with tibia and C7 until 3 measurements of each region are obtained, enough time to give 30 seconds of rest between measurements in the same region. This protocol has demonstrated high inter-observer reliability measuring healthy subjects (ICC = 0.91).
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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