custom-smartphone-application-to-guide-locomotor-respiratory-coupling

Custom Smartphone Application to Guide Locomotor-Respiratory Coupling in the Field Using Step-Adaptive Breathing Sounds

While running is amongst the most popular activities for competition and leisure, an estimated 20-40% of runners may suffer from respiratory limitations. ...

Paris Lodron University of Salzburg

Gait initiation in level walking is suggested to take three steps before reaching steady-state walking speed. In sloped gait, it is not clear if the general recommendation of level gait can be used.

Analysis of sloped gait: How many steps are needed to reach steady-state walking speed after gait initiation?

Inclined treadmills or static ramp constructions can be used to investigate downhill gait in a standardised laboratory condition. There is a lack of information how the gait patterns are affected when walking on a ramp or an inclined treadmill during uphill and downhill walking.

Gait on slopes: Differences in temporo-spatial, kinematic and kinetic gait parameters between walking on a ramp and on a treadmill.

Many runners struggle to find a rhythm during running. This may be because 20-40% of runners experience unexplained, unpleasant breathlessness at exercise onset. Locomotor-respiratory coupling (LRC), a synchronization phenomenon in which the breath is precisely timed with the steps, may provide metabolic or perceptual benefits to address these limitations. It can also be consciously performed. Hence, we developed a custom smartphone application to provide real-time LRC guidance based on individual step rate.

Step-adaptive sound guidance enhances locomotor-respiratory coupling in novice female runners: A proof-of-concept study.

The ankle joint is one of the most involved joints in uphill walking. Furthermore, it is well known that toe walking increases the external dorsiflexion moment in the first half of stance during level walking. However, the effects of different foot-strike patterns on plantar flexor muscle forces, ankle joint forces, and other lower limb joint and muscle forces are unknown.

A forefoot strike pattern during 18° uphill walking leads to greater ankle joint and plantar flexor loading.

Recovery of overhead mobility after shoulder surgery is time-consuming and important for patient satisfaction. Overhead stretching and mobilization of the scapulothoracic and glenohumeral (GH) joints are common treatment interventions. The isolated GH range of motion (ROM) of flexion, abduction, and external rotation required to move above 120° of global shoulder flexion in the clinical setting remains unclear. This study clarified the GH ROM needed for overhead mobility.

Article	Year
Analysis of sloped gait: How many steps are needed to reach steady-state walking speed after gait initiation? Gait & posture\| PubMed ID: 33152612	2021
Gait on slopes: Differences in temporo-spatial, kinematic and kinetic gait parameters between walking on a ramp and on a treadmill. Gait & posture\| PubMed ID: 34653877	2022
Step-adaptive sound guidance enhances locomotor-respiratory coupling in novice female runners: A proof-of-concept study. Frontiers in sports and active living\| PubMed ID: 36935883	2023
A forefoot strike pattern during 18° uphill walking leads to greater ankle joint and plantar flexor loading. Gait & posture\| PubMed ID: 37087807	2023
Defining the glenohumeral range of motion required for overhead shoulder mobility: an observational study. Archives of physiotherapy\| PubMed ID: 39280075	2024

Hermann Schwameder

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