Muscle oxygenation maintained during repeated-sprints despite inspiratory muscle loading.

08:00 EDT 19th September 2019 | BioPortfolio

Summary of "Muscle oxygenation maintained during repeated-sprints despite inspiratory muscle loading."

A high work of breathing can compromise limb oxygen delivery during sustained high-intensity exercise. However, it is unclear if the same is true for intermittent sprint exercise. This project examined the effect of adding an inspiratory load on locomotor muscle tissue reoxygenation during repeated-sprint exercise. Ten healthy males completed three experiment sessions of ten 10-s sprints, separated by 30-s of passive rest on a cycle ergometer. The first two sessions were "all-out' efforts performed without (CTRL) or with inspiratory loading (INSP) in a randomised and counterbalanced order. The third experiment session (MATCH) consisted of ten 10-s work-matched intervals. Tissue saturation index (TSI) and deoxy-haemoglobin (HHb) of the vastus lateralis and sixth intercostal space was monitored with near-infrared spectroscopy. Vastus lateralis reoxygenation (ΔReoxy) was calculated as the difference from peak HHb (sprint) to nadir HHb (recovery). Total mechanical work completed was similar between INSP and CTRL (effect size: -0.18, 90% confidence limit ±0.43), and differences in vastus lateralis TSI during the sprint (-0.01 ±0.33) and recovery (-0.08 ±0.50) phases were unclear. There was also no meaningful difference in ΔReoxy (0.21 ±0.37). Intercostal HHb was higher in the INSP session compared to CTRL (0.42 ±0.34), whilst the difference was unclear for TSI (-0.01 ±0.33). During MATCH exercise, differences in vastus lateralis TSI were unclear compared to INSP for both sprint (0.10 ±0.30) and recovery (-0.09 ±0.48) phases, and there was no meaningful difference in ΔReoxy (-0.25 ±0.55). Intercostal TSI was higher during MATCH compared to INSP (0.95 ±0.53), whereas HHb was lower (-1.09 ±0.33). The lack of difference in ΔReoxy between INSP and CTRL suggests that for intermittent sprint exercise, the metabolic O2 demands of both the respiratory and locomotor muscles can be met. Additionally, the similarity of the MATCH suggests that ΔReoxy was maximal in all exercise conditions.


Journal Details

This article was published in the following journal.

Name: PloS one
ISSN: 1932-6203
Pages: e0222487


DeepDyve research library

PubMed Articles [6244 Associated PubMed Articles listed on BioPortfolio]

Inspiratory muscle training improves performance of a repeated sprints ability test in professional soccer players.

Inspiratory muscle training (IMT) is an important method of attenuating both respiratory and peripheral effort perceptions, consequently improving neuromuscular performance and resulting in greater im...

Regarding: "Inspiratory muscle training improves performance of a repeated sprints ability test in professional soccer players".

The Journal of Bodywork & Movement Therapies recently published an article by Silva et al., entitled "Inspiratory muscle training improves performance of a repeated sprints ability test in profession...

Inspiratory Muscle Training After Heart Valve Replacement Surgery Improves Inspiratory Muscle Strength, Lung Function, and Functional Capacity: A RANDOMIZED CONTROLLED TRIAL.

The aim of this study was to analyze the effects of inspiratory muscle training (IMT) as a therapeutic strategy after heart valve replacement surgery (HVRS).

Changes in tissue oxygenation in response to sudden intradialytic hypotension.

A 76-year-old woman on hemodialysis (HD) for diabetic nephropathy was admitted to our hospital with occasional intradialytic hypotension (IDH). We continuously monitored the regional oxygen saturation...

Inspiratory Muscle Training in Rehabilitation of Low Back Pain: A Randomized Controlled Trial.

People with chronic low back pain (CLBP) suffer from weaknesses in their core muscle activity and dysfunctional breathing. Inspiratory muscle training (IMT) was recently developed to treat this condit...

Clinical Trials [6504 Associated Clinical Trials listed on BioPortfolio]

Effects of Inspiratory Muscle Training in Persons With Advanced Multiple Sclerosis

This study evaluates the effects of a 10-week inspiratory muscle training on the outcomes of respiratory muscle strength, fatigue, activity participation, and respiratory infection rates i...

Acute Effects of Inspiratory Muscle Training at Different Intensities in Healthy People

At least 30 volunteers will be included in the study. After questioning the demographic and clinical information of the participants, dyspnea perception, respiratory functions, respiratory...

Effects of Inspiratory Muscle Training in Patients With Bronchiectasis

The purpose of this study is to determine whether inspiratory muscle training could improve and/or prevent the deterioration of inspiratory muscle strength, clinical cardiopulmonary outcom...

Inspiratory Muscle Training (EMI) on Inspiratory Muscle Strength, Pulmonary Capacity and Performance in Soccer Players

The training of the respiratory muscles seems to be fundamental in people who require a high physical demand. There is abundant scientific evidence that relates the respiratory variables a...

Inspiratory Muscle Training in Hypercapnic COPD

The trial intends to investigate, whether inspiratory muscle training in hypercapnic patients improves inspiratory muscle strength, inspiratory muscle endurance and endurance to walk withi...

Medical and Biotech [MESH] Definitions

The maximum volume of air that can be inspired after reaching the end of a normal, quiet expiration. It is the sum of the TIDAL VOLUME and the INSPIRATORY RESERVE VOLUME. Common abbreviation is IC.

Projection of near-IR light (INFRARED RAYS), in the 700-1000 nm region, across an object in parallel beams to an array of sensitive photodetectors. This is repeated at various angles and a mathematical reconstruction provides three dimensional MEDICAL IMAGING of tissues. Based on the relative transparency of tissues to this spectra, it has been used to monitor local oxygenation, brain and joints.

The volume of air contained in the lungs at the end of a maximal inspiration. It is the equivalent to each of the following sums: VITAL CAPACITY plus RESIDUAL VOLUME; INSPIRATORY CAPACITY plus FUNCTIONAL RESIDUAL CAPACITY; TIDAL VOLUME plus INSPIRATORY RESERVE VOLUME plus functional residual capacity; or tidal volume plus inspiratory reserve volume plus EXPIRATORY RESERVE VOLUME plus residual volume.

Further or repeated use of equipment, instruments, devices, or materials. It includes additional use regardless of the original intent of the producer as to disposability or durability. It does not include the repeated use of fluids or solutions.

Transference of multiple tissues, such as muscle, bone, nerve, and skin, as a functional unit for reconstructive purposes. Blood supply to the transplanted tissues is maintained throughout the transplantation procedure with minimal ischemia. Maintenance of vascularity in the graft promotes its viability, function, and survival in the recipient.

Quick Search

DeepDyve research library

Relevant Topics

Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...

Asthma COPD Cystic Fibrosis Pneumonia Pulmonary Medicine Respiratory Respiratory tract infections (RTIs) are any infection of the sinuses, throat, airways or lungs.  They're usually caused by viruses, but they can also ...

Searches Linking to this Article