Exercise Physiology at “Conversational Level” is not Impaired under Wearing Masks or Respirators: Disproving False Myths (Preprint)

2021 ◽  
Author(s):  
Davinia Vicente-Campos ◽  
Violeta Sanchez-Migallón ◽  
César Calvo-Lobo ◽  
Sandra Sanchez-Jorge ◽  
Mónica Arce-Palomares ◽  
...  
Keyword(s):  
Heart Rate ◽  
Muscle Strength ◽  
Perceived Exertion ◽  
Exercise Physiology ◽  
Inspiratory Muscle ◽  
Metabolic Parameters ◽  
Recreational Physical Activity ◽  
Surgical Masks ◽  
Before And After ◽  
Inspiratory Muscle Strength

UNSTRUCTURED The aim of this study was to evaluate the effects of the use of both surgical masks and FFP2 respirators on the inspiratory muscle strength, metabolic parameters, heart rate, subjective perceived exertion and dyspnea perception, before and during 30 minutes stable load exercise at “conversational level”. A randomized cross-over study was carried out. Nineteen healthy adults completed 3 conditions (without mask, with surgical mask or FFP2 respirator) during a 30-minute steady-state-test at the lactate threshold intensity. Inspiratory muscle strength was measured before and after the test, and metabolic parameters, heart rate, subjective perceived exertion and dyspnea perception were collected at baseline, during and after the test. There was a significant reduction in inspiratory muscle strength after the 30-minutes-test in all conditions (control:-6.26 mmHg, p<0.5; surgical mask:-8.55mmHg, p<0.01; FFP2respirator:-12.42 mmHg, p<0.001), but without significant differences between them (p=0.283). Data showed a statistically significant effect for time, but did not show a statistically significant interaction between condition and time for heart rate (p=0.674), oxygen saturation (p=0.297), blood lactate level (p=0.991), rating perceived exertion (p=0.734) and dyspnea (p=0.532) comparisons. The present study findings suggested that inspiratory muscle strength and physiological parameters during “conversational level” exercise were not impaired under wearing masks in healthy, non-smoking young adults, who participated in regular recreational physical activity for at least 3 days per week.

scholarly journals Effects of a Rehabilitation Programme with a Nasal Inspiratory Restriction Device on Exercise Capacity and Quality of Life in COPD

2020 ◽  
Vol 17 (10) ◽  
pp. 3669 ◽  
Author(s):  
Aurelio Arnedillo ◽  
Jose L. Gonzalez-Montesinos ◽  
Jorge R. Fernandez-Santos ◽  
Carmen Vaz-Pardal ◽  
Carolina España-Domínguez ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Muscle Strength ◽  
Exercise Capacity ◽  
Rehabilitation Program ◽  
Inspiratory Muscle ◽  
Control Group ◽  
6Mwt Distance ◽  
Before And After ◽  
Inspiratory Muscle Strength

Objective: The objective was to assess the effects of a nasal restriction device for inspiratory muscle training, called Feelbreathe®, added to a rehabilitation program (RP) on exercise capacity, quality of life, dyspnea and inspiratory muscle strength in patients with stable COPD. Methods: Patients were randomized into three groups, one performed a supervised RP using the Feelbreathe® device (FB group), the second group developed the same RP with oronasal breathing without FB (ONB group) and the third was the control group (CG). We evaluated inspiratory muscle strength (PImax), dyspnea (mMRC), quality of life (CAT) and exercise capacity (6MWT) before and after 8-week of RP. Results: A total of 16 patients completed the study, seven in FB group, five in ONB group and four in the CG. After the RP, the FB group showed a significant increase in PImax (93.3 ± 19.1 vs. 123.0 ± 15.8 mmHg) and in the 6MWT distance (462.9 ± 71.8 m vs. 529.1 ± 50.1 m) and a decrease in the CAT score (9.7 ± 6.5 vs. 5.9 ± 6.0) and in the mMRC dyspnea score. FB provides greater improvement in PImax, dyspnea, quality of life and 6MWT than ONB. Conclusions: The Feelbreathe® device provides greater improvements in quality of life, dyspnea, exercise capacity and inspiratory muscle strength compared to patients that did not use it.

Effect of inspiratory muscle strength training on inspiratory motor drive and RREP early peak components

2003 ◽  
Vol 94 (2) ◽  
pp. 462-468 ◽  
Author(s):  
Chien Hui Huang ◽  
A. Daniel Martin ◽  
Paul W. Davenport
Keyword(s):  
Muscle Strength ◽  
Strength Training ◽  
Inspiratory Muscle ◽  
Motor Drive ◽  
Pressure Threshold ◽  
Before And After ◽  
Inspiratory Motor ◽  
Early Peak ◽  
Mouth Occlusion Pressure ◽  
Inspiratory Muscle Strength

This study investigated the effect of inspiratory muscle strength training (IMST) on inspiratory motor drive [mouth occlusion pressure at 0.1 s (P0.1)] and respiratory-related evoked potentials (RREP). It was hypothesized that, if IMST increased inspiratory muscle strength, inspiratory motor drive would decrease. If motor drive were related to the RREP, it was further hypothesized that an IMST-related decrease in drive would change RREP latency and/or amplitude. Twenty-three subjects received IMST at 75% of their maximal inspiratory pressure (Pi max) with the use of a pressure threshold valve. IMST consisted of four sets of six breaths daily for 4 wk. P0.1 and the RREP were recorded before and after IMST. Posttraining, Pi maxincreased significantly by 36.0 ± 2.7%. P0.1decreased significantly by 21.9 ± 5.2%. The increase in Pi max was significantly correlated to the decrease in P0.1. RREP peaks P1a, Nf, P1, and N1 were identified pre- and post-IMST, and there was no difference in either amplitude or latency for those peaks. These results demonstrate that high-intensity IMST significantly increased Pi max, decreased P0.1, but did not change the RREP.

scholarly journals ALTERATION OF INSPIRATORY MUSCLE STRENGTH IS RELATED TO CHANGE IN DEEP BREATHING HEART RATE VARIABILITY IN PATIENTS SUBMITTED TO OPEN-HEART SURGERY

CHEST Journal ◽  
2019 ◽  
Vol 155 (4) ◽  
pp. 299A
Author(s):  
K. Pongpanit ◽  
B. Viseschoonhasilp ◽  
S. Ruangklai ◽  
T. Pariyatkaraphan ◽  
S. Buranapuntalug ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Muscle Strength ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Inspiratory Muscle ◽  
Open Heart ◽  
Deep Breathing ◽  
Inspiratory Muscle Strength

Influence of inspiratory muscle strength on exercise capacity before and after cardiac rehabilitation

2021 ◽  
Vol 28 (2) ◽  
pp. 1-12
Author(s):  
Tamires Daros dos Santos ◽  
Sergio Nunes Pereira ◽  
Luiz Osório Cruz Portela ◽  
Marisa Bastos Pereira ◽  
Adriane Schmidt Pasqualoto ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Muscle Strength ◽  
Confidence Interval ◽  
Coronary Artery Bypass ◽  
Exercise Capacity ◽  
Artery Bypass ◽  
Inspiratory Muscle ◽  
Short Term ◽  
Before And After ◽  
Inspiratory Muscle Strength

Background/Aims Coronary artery bypass grafting is a complex procedure that triggers a series of clinical and functional complications. The reduction of inspiratory muscle strength that persists during the late postoperative period has been suggested as an important determinant of functional capacity after coronary artery bypass grafting. The aim of this study was to investigate whether inspiratory muscle strength, functional capacity and quality of life are determinants of exercise capacity before and after a short-term phase II cardiac rehabilitation programme in patients who have had coronary artery bypass graft surgery. Methods A prospective quasi-experimental study was undertaken with 20 patients who had recevied coronary artery bypass surgery. All patients completed a short-term, moderate-to-high intensity inspiratory muscle training programme, followed by aerobic and resistance exercise, two times a week for 12 weeks, totalling 24 sessions, under the direct supervision of a physical therapist. Results Pre-intervention, peak oxygen consumption (peak VO2) was associated with maximum inspiratory pressure (β=0.037; 95% confidence interval 0.01–0.06; P=0.002). Post-intervention, peak VO2 was associated with maximum inspiratory pressure (β=0.03; 95% confidence interval 0.007–0.053; P=0.014) and the 6-Minute Walk Test (β=0.007; 95% confidence interval, 0.001–0.013; P=0.024). Conclusions Inspiratory muscle strength influences exercise capacity before and after a short-term cardiac rehabilitation programme in patients who have had coronary artery bypass graft surgery.

Effects of changes in inspiratory muscle strength on the sensation of respiratory force

1991 ◽  
Vol 70 (1) ◽  
pp. 240-245 ◽  
Author(s):  
S. Redline ◽  
S. B. Gottfried ◽  
M. D. Altose
Keyword(s):  
Muscle Strength ◽  
Strength Training ◽  
Respiratory Muscle ◽  
Muscle Force ◽  
Normal Subjects ◽  
Inspiratory Muscle ◽  
Magnitude Scaling ◽  
Before And After ◽  
Command Signals ◽  
Inspiratory Muscle Strength

The sensation of respiratory muscle force was compared in seven normal subjects before and after inspiratory muscle strength training. Subjects performed 20 sustained maximal inspiratory maneuvers daily for 6–18 wk. Maximal inspiratory pressures (MIP) increased from 124 +/- 10 to 187 +/- 9 (SE) cmH2O (P less than 0.005). Exponents of the power function relationships between mouth pressure (Pm) and the intensity of the sensation of force, corrected for inspiratory duration, during magnitude scaling of resistive and elastic ventilatory loads were the same before and after training (P greater than 0.05). However, absolute sensation intensity (S) during resistive and elastic loading was reduced significantly after strength training but returned toward baseline levels greater than or equal to 8 wk after the cessation of training when the MIP had fallen to 150 +/- 5 cmH2O. The absolute S at a given Pm during ventilatory loading changed inversely with changes in MIP (P less than 0.001). Furthermore the relationship between absolute S and Pm expressed as a proportion of the MIP (Pm/MIP) was constant over testing periods. These results suggest that the sensation of respiratory muscle force reflects the proportion of the maximum force utilized in breathing and may be based on the level of respiratory motor command signals.

Determinants of dynamic inspiratory muscle strength in healthy trained elderly

2021 ◽  
Author(s):  
A Roldán ◽  
A Forte ◽  
P Monteagudo ◽  
A Cordellat ◽  
J Monferrer-Marín ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Inspiratory Muscle ◽  
Inspiratory Muscle Strength

Inspiratory muscle strength in chronic obstructive pulmonary disease depending on disease severity

2007 ◽  
Vol 113 (5) ◽  
pp. 243-249 ◽  
Author(s):  
Hans-Joachim Kabitz ◽  
Stephan Walterspacher ◽  
David Walker ◽  
Wolfram Windisch
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Muscle Strength ◽  
Pulmonary Disease ◽  
Disease Severity ◽  
Inspiratory Muscle ◽  
Walking Distance ◽  
Chronic Obstructive ◽  
Obstructive Pulmonary Disease ◽  
Copd Patients ◽  
Inspiratory Muscle Strength

Staging criteria for COPD (chronic obstructive pulmonary disease) include symptoms and lung function parameters, but the role of reduced inspiratory muscle strength related to disease severity remains unclear. Therefore the present study tested whether inspiratory muscle strength is reduced in COPD and is related to disease severity according to GOLD (Global Initiative for Chronic Obstructive Lung Disease) criteria and assessed its clinical impact. PImax (maximal inspiratory mouth occlusion pressure), SnPna (sniff nasal pressure) and TwPmo (twitch mouth pressure) following bilateral anterior magnetic phrenic nerve stimulation were assessed in 33 COPD patients (8 GOLD0, 6 GOLDI, 6 GOLDII, 7 GOLDIII and 6 GOLDIV) and in 28 matched controls. Furthermore, all participants performed a standardized 6 min walking test. In comparison with controls, PImax (11.6±2.5 compared with 7.3±3.0 kPa; P<0.001), SnPna (9.7±2.5 compared with 6.9±3.3 kPa; P<0.001) and TwPmo (1.6±0.6 compared with 0.8±0.4 kPa; P<0.001) were markedly lower in COPD patients. TwPmo decreased with increasing COPD stage. TwPmo was correlated with walking distance (r=0.75; P<0.001), dyspnoea (r=−0.61; P<0.001) and blood gas values following exercise (r>0.57; P<0.001). Inspiratory muscle strength, as reliably assessed by TwPmo, decreased with increasing severity of COPD and should be considered as an important factor in rating disease severity and to reflect burden in COPD.

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