scholarly journals The Effect of Inspiratory Muscle Warm-Up on VO2 Kinetics during Submaximal Rowing

Sports ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 42
Author(s):  
Mati Arend ◽  
Jana Kivastik ◽  
Jaak Talts ◽  
Jarek Mäestu
Keyword(s):  
Positive Association ◽  
Inspiratory Muscle ◽  
Inspiratory Pressure ◽  
Maximal Inspiratory Pressure ◽  
Constant Intensity ◽  
Warm Up ◽  
Volitional Exhaustion ◽  
Pressure Test ◽  
Vo2 Kinetics ◽  
Ergometer Rowing

The aim of the study was to investigate the effect of an inspiratory muscle warm-up on the VO2 kinetics during submaximal intensity ergometer rowing. Ten competitive male rowers (age 23.1 ± 3.8 years; height 188.1 ± 6.3 cm; body mass 85.6 ± 6.6 kg) took part in this investigation. A submaximal constant intensity (90% PVO2max) rowing test to volitional exhaustion was carried out twice with the standard rowing warm-up (Test 1) and with the standard rowing warm-up with additional specific inspiratory muscle warm-up of two sets of 30 repetitions at 40% maximal inspiratory pressure (Test 2). We found a significant correlation between time constant (τ1) and the VO2 value at 400 s in Test 1 (r = 0.78; p < 0.05); however, no correlation was found between those parameters in Test 2. In addition, we found a positive association between VO2max from the incremental rowing test and τ1 from Test 1 (r = 0.71; p < 0.05), whereas VO2 did not correlate with τ1 from Test 2. Adding inspiratory muscle warm-up of 40% maximal inspiratory pressure to regular rowing warm-up had no significant effect on oxygen consumption kinetics during submaximal rowing tests.

scholarly journals Inspiratory muscle strength in subjects with tetraplegia: viability of evaluation through the measurement of maximal inspiratory pressure

2014 ◽  
Vol 27 (3) ◽  
pp. 371-377
Author(s):  
Marlene Aparecida Moreno ◽  
Juliana Viana Paris ◽  
Raphael do Nascimento Pereira ◽  
Antonio Roberto Zamunér ◽  
Tais Mendes de Camargo ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Cross Sectional Study ◽  
Inspiratory Muscle ◽  
Inspiratory Pressure ◽  
Maximal Inspiratory Pressure ◽  
Cross Sectional ◽  
Pressure Meter ◽  
Predicted Values ◽  
Inspiratory Muscle Strength ◽  
Sniff Nasal Inspiratory Pressure

Objective To analyze the values of maximal inspiratory pressure (MIP) and sniff nasal inspiratory pressure (SNIP) and to verify the existence of concordance between the two evaluation methodologies, in subjects with tetraplegia. Materials and methods Cross-sectional study with 17 tetraplegic men, aged 30.42 ± 7.67 years, who underwent MIP and SNIP evaluation using a respiratory pressure meter. Results The MIP and SNIP values obtained showed no difference when compared to each other (88.42 ± 29.39 vs. 86.68 ± 25.40 cmH2O, respectively). They were, however, significantly lower compared to the predicted values (MIP = 128.92 ± 7.18; SNIP = 114.11 ± 3.19 cmH2O), with the MIP values presenting correlation (r2 = 0.94; p < 0.0001) and concordance with those of the SNIP. Conclusions Both the MIP and SNIP values obtained were lower than the predicted values, indicating a reduction in inspiratory muscle strength (IMS). Both techniques showed correlation and concordance, suggesting that MIP can be used as a noninvasive method for IMS evaluation in this population.

Specific inspiratory muscle warm-up enhances badminton footwork performance

2007 ◽  
Vol 32 (6) ◽  
pp. 1082-1088 ◽  
Author(s):  
Hua Lin ◽  
Tom Kwokkeung Tong ◽  
Chuanye Huang ◽  
Jinlei Nie ◽  
Kui Lu ◽  
...  
Keyword(s):  
Random Order ◽  
Inspiratory Muscle ◽  
Inspiratory Pressure ◽  
Test Duration ◽  
Warm Up ◽  
Pressure Threshold ◽  
Mouth Pressure ◽  
Concomitant Reduction ◽  
Experimental Trials ◽  
Relationship Of

The effects of inspiratory muscle (IM) warm-up on IM function and on the maximum distance covered in a subsequent incremental badminton-footwork test (FWmax) were examined. Ten male badminton players were recruited to perform identical tests in three different trials in a random order. The control trial did not involve an IM warm-up, whereas the placebo and experimental trials did involve an IM warm-up consisting of two sets of 30-breath manoeuvres with an inspiratory pressure-threshold load equivalent to 15% (PLA) and 40% (IMW) maximum inspiratory mouth pressure, respectively. In the IMW trial, IM function was improved with 7.8% ± 4.0% and 6.9% ± 3.5% increases from control found in maximal inspiratory pressure at zero flow (P0) and maximal rate of P0 development (MRPD), respectively (p < 0.05). FWmax was enhanced 6.8% ± 3.7%, whereas the slope of the linear relationship of the increase in the rating of perceived breathlessness for every minute (RPB/min) was reduced (p < 0.05). Reduction in blood lactate ([La–]b) accumulation was observed when the test duration was identical to that of the control trial (P < 0.05). In the PLA trial, no parameter was changed from control. For the changes (Δ) in parameters in IMW (n = 10), negative correlations were found between ΔP0 and ΔRPB/min (r2 = 0.58), ΔMRPD and ΔRPB/min (r2 = 0.48), ΔRPB/min, and ΔFWmax (r2 = 0.55), but not between Δ[La–]b accumulation and ΔFWmax. Such findings suggest that the IM-specific warm-up improved footwork performance in the subsequent maximum incremental badminton-footwork test. The improved footwork was partly attributable to the reduced breathless sensation resulting from the enhanced IM function, whereas the contribution of the concomitant reduction in [La–]b accumulation was relatively minor.

Inspiratory Muscle Training: Improvement of Exercise Performance With Acute Hypoxic Exposure

2019 ◽  
Vol 14 (8) ◽  
pp. 1124-1131 ◽  
Author(s):  
Daniel G. Hursh ◽  
Marissa N. Baranauskas ◽  
Chad C. Wiggins ◽  
Shane Bielko ◽  
Timothy D. Mickleborough ◽  
...  
Keyword(s):  
Endurance Exercise ◽  
Exercise Performance ◽  
Perceived Exertion ◽  
Submaximal Exercise ◽  
Inspiratory Muscle ◽  
Inspiratory Muscle Training ◽  
Inspiratory Pressure ◽  
Hypoxic Exposure ◽  
Maximal Inspiratory Pressure ◽  
Muscle Training

Endurance exercise performance in hypoxia may be influenced by an ability to maintain high minute ventilation () in defense of reduced arterial oxyhemoglobin saturation. Inspiratory muscle training (IMT) has been used as an effective intervention to attenuate the negative physiological consequences associated with an increased , resulting in improved submaximal-exercise performance in normoxia. However, the efficacy of IMT on hypoxic exercise performance remains unresolved. Purpose: To determine whether chronic IMT improves submaximal-exercise performance with acute hypoxic exposure. Methods: A total of 14 endurance-trained men completed a 20-km cycling time trial (TT) in normobaric hypoxia (fraction of inspired oxygen [FiO2] = 0.16) before and after either 6 wk of an IMT protocol consisting of inspiratory loads equivalent to 80% of sustained maximal inspiratory pressure (n = 9) or a SHAM protocol (30% of sustained maximal inspiratory pressure; n = 5). Results: In the IMT group, 20-km TT performance significantly improved by 1.45 (2.0%), P = .03, after the 6-wk intervention. The significantly faster TT times were accompanied by a higher average (pre vs post: 99.3 [14.5] vs 109.9 [18.0] L·min−1, P = .01) and absolute oxygen uptake (pre vs post: 3.39 [0.52] vs 3.60 [0.58] L·min−1, P = .010), with no change in ratings of perceived exertion or dyspnea (P > .06). There were no changes in TT performance in the SHAM group (P = .45). Conclusion: These data suggest that performing 6 wk of IMT may benefit hypoxic endurance exercise performance lasting 30–40 min.

scholarly journals AIRWAY POSITIVE PRESSURE VS. EXERCISES WITH INSPIRATORY LOADING FOCUSED ON PULMONARY AND RESPIRATORY MUSCULAR FUNCTIONS IN THE POSTOPERATIVE PERIOD OF BARIATRIC SURGERY

2018 ◽  
Vol 31 (2) ◽  
Author(s):  
Maura Rigoldi Simões da ROCHA ◽  
Stefane SOUZA ◽  
Carolina Moraes da COSTA ◽  
Daniela Faleiros Bertelli MERINO ◽  
Maria Imaculada de Lima MONTEBELO ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Muscle Strength ◽  
Inspiratory Muscle ◽  
Inspiratory Pressure ◽  
Positive Pressure ◽  
Maximal Inspiratory Pressure ◽  
Significant Difference ◽  
Respiratory Physiotherapy ◽  
Inspiratory Muscle Strength ◽  
Inspiratory Load

ABSTRACT Background: Bariatric surgery can trigger postoperative pulmonary complications due to factors inherent to the procedure, mainly due to diaphragmatic dysfunction. Aim: To evaluate and compare the effects of two levels of positive pressure and exercises with inspiratory load on lung function, inspiratory muscle strength and respiratory muscle resistance, and the prevalence of atelectasis after gastroplasty. Methods: Clinical, randomized and blind trial, with subjects submitted to bariatric surgery, allocated to two groups: positive pressure group, who received positive pressure at two levels during one hour and conventional respiratory physiotherapy and inspiratory load group, who performed exercises with load linear inspiratory pressure, six sets of 15 repetitions, in addition to conventional respiratory physiotherapy, both of which were applied twice in the immediate postoperative period and three times a day on the first postoperative day. Spirometry was performed for pulmonary function analysis, nasal inspiratory pressure for inspiratory muscle strength and incremental test of respiratory muscle resistance for sustained maximal inspiratory pressure, both preoperatively and on hospital discharge on the second postoperative day. Results: There was no significant difference (p> 0.05) in the expiratory reserve volume and in the tidal volume in the pre and postoperative periods when compared intra and intergroup. There was no significant difference (p>0.05) in the nasal inspiratory pressure and the maximal inspiratory pressure maintained in the inspiratory load group in the intragroup evaluation, but with a significant difference (p<0.05) compared to the positive pressure group. The prevalence of atelectasis was 5% in both groups with no significant difference (p>0.05) between them. Conclusion: Both groups, associated with conventional respiratory physiotherapy, preserved expiratory reserve volume and tidal volume and had a low atelectasis rate. The inspiratory loading group still maintained inspiratory muscle strength and resistance of respiratory muscles.

Do different loads in inspiratory muscle training alter maximal inspiratory pressure and ventilator weaning time?

2017 ◽  
Vol 42 ◽  
pp. 391
Author(s):  
Gisele Martins Leite dos Santos ◽  
João Victor Alvares Guzzo ◽  
Ivete Alonso Bredda Saad ◽  
Luciana Castilho de Figueiredo ◽  
Desanka Dragosavac ◽  
...  
Keyword(s):  
Ventilator Weaning ◽  
Inspiratory Muscle ◽  
Inspiratory Muscle Training ◽  
Inspiratory Pressure ◽  
Maximal Inspiratory Pressure ◽  
Muscle Training

Efficacy of inspiratory muscle training on inspiratory muscle function, functional capacity, and quality of life in patients with asthma: A randomized controlled trial

2021 ◽  
pp. 026921552098404
Author(s):  
Susan Martins Lage ◽  
Danielle Aparecida Gomes Pereira ◽  
Anna Luísa Corradi Magalhães Nepomuceno ◽  
Anna Cláudia de Castro ◽  
Augusto Gonçalves Araújo ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Training Group ◽  
Inspiratory Muscle ◽  
Inspiratory Muscle Training ◽  
Inspiratory Pressure ◽  
Maximal Inspiratory Pressure ◽  
Muscle Training ◽  
Post Intervention ◽  
Randomized Controlled

Objective: To evaluate the efficacy of an inspiratory muscle training protocol on inspiratory muscle function, functional capacity, and quality of life in patients with asthma. Design: A single-blind, randomized controlled clinical trial. Setting: Community-based. Subjects: Patients with asthma, aged between 20 and 70 years old, non-smokers. Interventions: Participants were randomized into two groups: inspiratory muscle training group performed inspiratory muscle training 5 days a week for 8 weeks, consisting of six sets of 30 breaths per day with a training load ⩾50% of maximal inspiratory pressure, plus an educational program; the control group only received the educational program. Main measurements: Maximal inspiratory pressure, inspiratory muscle endurance, and the distance performed on the incremental shuttle walking test were assessed pre-intervention, post-intervention and at follow-up (3 months after the end of the intervention). The asthma quality of life questionnaire was applied pre and post-intervention. Results: Data from 39 participants were analyzed. Maximal inspiratory pressure in percentage of predicted and endurance test duration were significantly higher post-intervention in the inspiratory muscle training group (∆ post–pre: 50.8% vs 7.3% of predicted – P < 0.001 and ∆ post–pre: 207.9 seconds vs 2.7 seconds – P < 0.001, respectively). There was no significant difference in the incremental shuttle walking distance between groups (∆ post–pre: 30.9 m vs −8.1 m, P = 0.165). Quality of life was perceived as significantly better, without a difference between groups ( P > 0.05). Conclusions: About 8 weeks of inspiratory muscle training in patients with controlled asthma significantly increased inspiratory muscle strength and endurance.

Abstract 2403: Inspiratory Muscle Training Decreases Central and Peripheral Sympathetic Activity Improves Reflex Vasodilatory Blood Flow in Patients with Chronic Heart Failure

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Priscila Mello ◽  
Grazia Guerra ◽  
Pedro Dall’ago ◽  
Suellen Borille ◽  
Maria U Rondom ◽  
...  
Keyword(s):  
Blood Flow ◽  
Muscle Weakness ◽  
Sympathetic Activity ◽  
Forearm Blood Flow ◽  
Inspiratory Muscle ◽  
Inspiratory Muscle Training ◽  
Inspiratory Pressure ◽  
Maximal Inspiratory Pressure ◽  
Muscle Training ◽  
Peripheral Sympathetic Activity

Background: Inspiratory muscle training (IMT) improves functional capacity of patients with CHF but the mechanisms of this effect are unknown. Objective: We tested the hypothesis that IMT could decrease sympathetic activity and improve the reflex muscle vasodilatory response during exercise in patients (CHF) and inspiratory muscle weakness. Methods: Six patients with CHF and inspiratory muscle weakness (maximal inspiratory pressure <70% of predicted) NYHA Class II–III, EF <35%, peak VO(2) < 20 ml/kg/min, were submitted to a IMT during 12 weeks (30 minute breathing with an inspiratory resistance of 30% of maximal inspiratory pressure). Muscle sympathetic nerve activity (MSNA) was recorded by microneurography, LF (sympathetic) and HF (parasympathetic) components of the heart rate variability and LF/HF ratio were assessed by the use of power spectral analysis of RR interval. Forearm blood flow (FBF) was measured by venous occlusion plethysmography at baseline and during hand grip (HG) manouver. Paired student t-test was used to analyze the impact of IMT in this population. Results: Compared to baseline, IMT significantly (p < 0,05) caused: an increase in inspiratory muscle force by 130%; a 15% reduction in MSNA (40 ± 1 vs 33 ± 1 bursts/min); an increase in forearm blood flow (0.8+/−0.1 mL/min/100 g) during HG manouver; a decrease in LF% (59 ± 5 vs 39 ± 3 U); an increase in HF% (40 ± 5 vs 61 ± 3 U); a decrease in LF/HF ratio (1,74 vs 0,66). Conclusions: Twelve weeks of Inspiratory muscle training in patients with CHF and inspiratory muscle weakness promoted a significant improvement in cardiovascular parameters, such as increase in limb blood flow, cardiac autonomic balance and baroreflex sensitivity, associated with a decrease in peripheral sympathetic activity.

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