Influence of a Six-Week Swimming Training with Added Respiratory Dead Space on Respiratory Muscle Strength and Pulmonary Function in Recreational Swimmers
Abstract
:1. Introduction
2. Materials and Methods
2.1. Participants
2.2. Design and Procedures
2.3. Independent Variable Measurements
2.3.1. Respiratory Muscle Strength Variable Measurements
2.3.2. Pulmonary Variable Measurements
2.3.3. Respiratory Variable Measurements
2.4. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Variables | E | C |
---|---|---|
Age (years) | 24.3 ± 2.7 | 24.0 ± 3.3 |
Body height (m) | 1.7 ± 0.1 | 1.7 ± 0.1 |
Body mass (kg) | 70.0 ± 13.1 | 72.3 ± 10.1 |
VO2max (mL kg–1 min–1) | 45.6 ± 7.5 | 47.1 ± 8.9 |
Control Group | |||||||
---|---|---|---|---|---|---|---|
Variables | Pre-Intervention | Post-Intervention | Δ (Post-Pre) | ± of Δ (Post-Pre) | % Difference | p Value | |
PImax [cm H2O] | 127.6 ± 38.1 | 124.1 ± 36.2 | −3.5 | 52.6 | −2.7 | 0.47 | 0.05 |
PEmax [cm H2O] | 162.6 ± 33.0 | 166.5 ± 32.5 | 3.8 | 46.3 | 2.3 | 0.46 | 0.06 |
FVC [L] | 6.6 ± 1.6 | 6.5 ± 1.6 | −0.1 | 2.2 | −1.8 | 0.68 | 0.02 |
FEV1 [L] | 4.8 ± 0.9 | 4.9 ± 1.0 | 0.1 | 1.4 | 1.9 | 0.74 | 0.01 |
PEF [L s–1] | 8.9 ± 2.2 | 8.9 ± 1.9 | 0.0 | 2.9 | 0.3 | 0.89 | 0.01 |
PIF [L s–1] | 2.6 ± 0.9 | 2.2 ± 1.0 | −0.5 | 1.4 | −18.3 | 0.10 | 0.24 |
Experimental Group | |||||||
Variables | Pre-Intervention | Post-Intervention | Δ (Post-Pre) | ± of Δ (Post-Pre) | % Difference | pValue | |
PImax [cm H2O] | 122.9 ± 40.7 | 131.2 ± 26.4 | 8.3 | 48.5 | 6.7 | 0.47 | 0.05 |
PEmax [cm H2O] | 136.1 ± 52.8 | 156.6 ± 49.0 | 20.4 | 72.0 | 15.0 | 0.21 | 0.01 |
FVC [L] | 6.0 ± 1.2 | 6.1 ± 1.6 | 0.1 | 2.0 | 1.5 | 0.80 | ≥0.00 |
FEV1 [L] | 4.9 ± 0.9 | 4.6 ± 0.9 | −0.3 | 1.2 | −5.4 | 0.22 | 0.15 |
PEF [L s–1] | 8.2 ± 2.2 | 7.9 ± 2.2 | −0.3 | 3.1 | −3.6 | 0.58 | 0.03 |
PIF [L s–1] | 1.9 ± 1.0 | 2.6 ± 1.8 | 0.7 | 2.1 | 34.7 | 0.26 | 0.13 |
Control Group | ||||||||
---|---|---|---|---|---|---|---|---|
Variables | Power [W] | Pre-Intervention | Post-Intervention | Δ (Post-Pre) | ± of Δ (Post-Pre) | % Difference | p Value | |
Rf [breaths min–1] | 50 | 20.4 ± 2.8 | 20.4 ± 5.5 | 0.0 | 6.2 | −0.1 | 0.99 | ≥0.00 |
100 | 23.1 ± 4.7 | 22.6 ± 4.0 | −0.5 | 6.1 | −2.0 | 0.68 | 0.02 | |
150 | 25.3 ± 4.1 | 25.9 ± 4.5 | 0.6 | 6.1 | 2.4 | 0.61 | 0.03 | |
200 | 29.5 ± 7.9 | 31.3 ± 6.6 | 1.8 | 10.2 | 6.0 | 0.22 | 0.15 | |
Max | 47.8 ± 10.3 | 47.1 ± 7.6 | −0.7 | 12.8 | −1.4 | 0.72 | 0.01 | |
VT [L breath–1] | 50 | 1.4 ± 0.2 | 1.4 ± 0.3 | 0.1 | 0.4 | 3.6 | 0.65 | 0.02 |
100 | 1.7 ± 2.0 | 1.7 ± 0.2 | 0.0 | 2.0 | −1.8 | 0.65 | 0.02 | |
150 | 2.0 ± 0.3 | 2.1 ± 0.3 | 0.1 | 0.4 | 4.0 | 0.32 | 0.01 | |
200 | 2.4 ± 0.4 | 2.4 ± 0.3 | 0.0 | 0.5 | −0.8 | 0.85 | 0.01 | |
Max | 2.6 ± 0.6 | 2.6 ± 0.5 | 0.0 | 0.8 | −0.8 | 0.82 | ≥0.00 | |
VE [L min–1] | 50 | 28.8 ± 4.8 | 28.2 ± 4.2 | −0.6 | 6.4 | −2.1 | 0.99 | 0.01 |
100 | 39.0 ± 4.1 | 37.4 ± 2.6 | −1.6 | 4.9 | –4.1 | 0.80 | 0.11 | |
150 | 51.9 ± 5.3 | 53.4 ± 4.3 | 1.5 | 6.8 | 2.9 | 0.89 | 0.07 | |
200 | 71.5 ± 12.3 | 72.4 ± 7.0 | 0.9 | 14.2 | 1.3 | 0.99 | 0.01 | |
Max | 132.3 ± 35.1 | 135.8 ± 39.8 | 3.5 | 53.1 | 2.6 | 0.93 | 0.03 | |
VO2max [mL kg–1 min–1] | Max | 47.1 ± 8.9 | 47.6 ± 10.2 | 0.5 | 13.5 | 1.1 | 0.97 | 0.05 |
Experimental Group | ||||||||
Variables | Power [W] | Pre-Intervention | Post-Intervention | Δ (Post-Pre) | ± of Δ (Post-Pre) | % Difference | pValue | |
Rf [breaths min–1] | 50 | 18.2 ± 5.1 | 18.5 ± 5.9 | 0.3 | 7.8 | 1.4 | 0.87 | ≥0.00 |
100 | 19.5 ± 6.3 | 20.9 ± 4.8 | 1.4 | 8.0 | 7.1 | 0.36 | 0.09 | |
150 | 22.1 ± 7.0 | 23.3 ± 5.3 | 1.2 | 8.7 | 5.5 | 0.52 | 0.04 | |
200 | 28.8 ± 8.7 | 27.9 ± 8.0 | −0.9 | 11.8 | −3.2 | 0.58 | 0.03 | |
Max | 41.8 ± 6.2 | 40.5 ± 7.9 | −1.2 | 10.1 | −2.9 | 0.60 | 0.03 | |
VT [L breath–1] | 50 | 1.6 ± 0.5 | 1.4 ± 0.5 | −0.1 | 0.7 | −8.3 | 0.15 | 0.2 |
100 | 2.1 ± 0.7 | 1.8 ± 0.4 | −0.3 | 0.8 | −13.7 | 0.03 * | 0.39 | |
150 | 2.3 ± 0.6 | 2.2 ± 0.4 | −0.1 | 0.7 | −5.7 | 0.34 | 0.09 | |
200 | 2.4 ± 0.5 | 2.5 ± 0.5 | 0.1 | 0.7 | 4.6 | 0.40 | 0.07 | |
Max | 2.5 ± 0.6 | 2.7 ± 0.6 | 0.2 | 0.8 | 6.3 | 0.01 * | 0.52 | |
VE [L min–1] | 50 | 26.9 ± 6.0 | 24.6 ± 3.3 | −2.3 | 6.8 | −8.6 | 0.63 | 0.11 |
100 | 36.9 ± 5.0 | 35.6 ± 2.1 | −1.3 | 5.4 | −3.5 | 0.84 | 0.05 | |
150 | 47.6 ± 6.2 | 48.7 ± 3.8 | 1.1 | 7.3 | 2.3 | 0.95 | 0.02 | |
200 | 66.4 ± 12.0 | 66.8 ± 7.4 | 0.4 | 14.1 | 0.6 | 1.00 | 0.01 | |
Max | 121.5 ± 39.5 | 124.8 ± 37.1 | 3.3 | 54.2 | 2.7 | 0.94 | 0.04 | |
VO2max [mL kg–1 min–1] | Max | 45.6 ± 7.5 | 46.7 ± 8.3 | 1.1 | 11.2 | 2.4 | 0.80 | 0.15 |
Control Group | ||||||||
---|---|---|---|---|---|---|---|---|
Variables | Power [W] | Pre-Intervention | Post-Intervention | Δ (Post-Pre) | ± of Δ (Post-Pre) | % Difference | p Value | |
Ti [s] | 50 | 1.4 ± 0.2 | 1.4 ± 0.4 | 0.1 | 0.4 | 4.4 | 0.62 | 0.03 |
100 | 1.3 ± 0.3 | 1.3 ± 0.2 | 0.0 | 0.4 | −0.8 | 0.92 | ≥0.00 | |
150 | 1.2 ± 0.2 | 1.1 ± 0.2 | −0.1 | 0.3 | −6.0 | 0.20 | 0.18 | |
200 | 1.1 ± 0.3 | 1.0 ± 0.2 | −0.1 | 0.4 | −12.0 | 0.11 | 0.24 | |
Te [s] | 50 | 1.6 ± 0.3 | 1.7 ± 0.4 | 0.1 | 0.5 | 4.9 | 0.52 | 0.04 |
100 | 1.4 ± 0.3 | 1.5 ± 0.2 | 0.0 | 0.4 | 2.1 | 0.68 | 0.02 | |
150 | 1.3 ± 0.2 | 1.3 ± 0.2 | 0.0 | 0.3 | 0.8 | 0.79 | 0.01 | |
200 | 1.1 ± 0.3 | 1.0 ± 0.2 | −0.1 | 0.3 | −4.6 | 0.32 | 0.01 | |
Ttot [s] | 50 | 3.0 ± 0.4 | 3.1 ± 0.8 | 0.1 | 0.8 | 4.7 | 0.56 | 0.04 |
100 | 2.7 ± 0.6 | 2.7 ± 0.4 | 0.0 | 0.7 | 1.1 | 0.87 | ≥0.00 | |
150 | 2.4 ± 0.4 | 2.4 ± 0.4 | −0.1 | 0.6 | −2.5 | 0.56 | 0.03 | |
200 | 2.2 ± 0.6 | 2.0 ± 0.4 | −0.2 | 0.7 | −8.3 | 0.16 | 0.17 | |
Ti/Ttot [%] | 50 | 45.0 ± 3.0 | 44.0 ± 3.0 | −1.0 | 4.2 | −2.2 | 0.51 | 0.05 |
100 | 46.0 ± 3.0 | 46.0 ± 2.0 | 0.0 | 3.6 | 0.0 | 0.36 | 0.08 | |
150 | 47.0 ± 2.0 | 46.0 ± 2.0 | −1.0 | 2.8 | −2.1 | 0.01 * | 0.46 | |
200 | 49.0 ± 2.0 | 48.0 ± 2.0 | −1.0 | 2.8 | −2.0 | 0.04 * | 0.36 | |
PetCO2 [mm Hg] | 50 | 38.0 ± 1.8 | 37.6 ± 3.2 | −0.4 | 3.6 | −1.0 | 0.63 | 0.02 |
100 | 39.5 ± 2.4 | 40.4 ± 3.0 | 0.9 | 3.8 | 2.3 | 0.15 | 0.20 | |
150 | 40.9 ± 2.7 | 39.9 ± 2.8 | −1.0 | 3.9 | −2.4 | 0.18 | 0.17 | |
200 | 40.3 ± 2.8 | 39.2 ± 2.7 | −1.1 | 3.9 | −2.7 | 0.02 * | 0.44 | |
Experimental Group | ||||||||
Variables | Power [W] | Pre-Intervention | Post-Intervention | Δ (Post-Pre) | ± of Δ (Post-Pre) | % Difference | pValue | |
Ti [s] | 50 | 1.5 ± 0.4 | 1.5 ± 0.5 | 0.0 | 0.6 | −0.7 | 0.94 | ≥0.00 |
100 | 1.6 ± 0.5 | 1.3 ± 0.3 | −0.3 | 0.6 | −16.7 | 0.01 * | 0.52 | |
150 | 1.3 ± 0.4 | 1.2 ± 0.3 | −0.1 | 0.5 | −8.2 | 0.36 | 0.08 | |
200 | 1.0 ± 0.2 | 1.1 ± 0.2 | 0.0 | 0.3 | 2.9 | 0.51 | 0.04 | |
Te [s] | 50 | 2.0 ± 0.6 | 2.1 ± 0.7 | 0.0 | 0.9 | 1.5 | 0.81 | ≥0.00 |
100 | 1.8 ± 0.5 | 1.7 ± 0.4 | −0.1 | 0.7 | −7.6 | 0.12 | 0.23 | |
150 | 1.6 ± 0.4 | 1.4 ± 1.4 | −0.2 | 1.5 | −10.0 | 0.21 | 0.16 | |
200 | 1.2 ± 0.3 | 1.2 ± 0.4 | 0.0 | 0.5 | 0.8 | 0.84 | ≥0.00 | |
Ttot [s] | 50 | 3.5 ± 1.0 | 3.6 ± 1.1 | 0.0 | 1.5 | 0.6 | 0.93 | ≥0.00 |
100 | 3.4 ± 1.0 | 3.0 ± 0.7 | −0.4 | 1.2 | −11.5 | 0.02 * | 0.45 | |
150 | 2.9 ± 0.8 | 2.7 ± 0.6 | −0.3 | 1.0 | −8.8 | 0.27 | 0.12 | |
200 | 2.3 ± 0.5 | 2.3 ± 0.6 | 0.0 | 0.7 | 1.8 | 0.71 | 0.02 | |
Ti/Ttot [%] | 50 | 42.0 ± 3.0 | 42.0 ± 2.0 | 0.0 | 3.6 | 0.0 | 0.43 | 0.06 |
100 | 45.0 ± 2.0 | 43.0 ± 2.0 | −2.0 | 2.8 | −4.4 | 0.04 * | 0.35 | |
150 | 45.0 ± 1.0 | 45.0 ± 2.0 | 0.0 | 2.2 | 0.0 | 0.38 | 0.08 | |
200 | 46.0 ± 2.0 | 46.0 ± 2.0 | 0.0 | 2.8 | 0.0 | 0.45 | 0.06 | |
PetCO2 [mm Hg] | 50 | 39.6 ± 3.1 | 38.7 ± 2.8 | −0.9 | 4.2 | −2.3 | 0.09 | 0.27 |
100 | 41.5 ± 2.8 | 40.5 ± 2.5 | −1.1 | 3.8 | −2.6 | 0.01 * | 0.47 | |
150 | 43.5 ± 4.1 | 41.0 ± 2.6 | −2.5 | 4.9 | −5.6 | 0.04 * | 0.35 | |
200 | 41.1 ± 3.7 | 40.1 ± 3.6 | −1.0 | 5.2 | −2.4 | 0.22 | 0.15 |
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Szczepan, S.; Danek, N.; Michalik, K.; Wróblewska, Z.; Zatoń, K. Influence of a Six-Week Swimming Training with Added Respiratory Dead Space on Respiratory Muscle Strength and Pulmonary Function in Recreational Swimmers. Int. J. Environ. Res. Public Health 2020, 17, 5743. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17165743
Szczepan S, Danek N, Michalik K, Wróblewska Z, Zatoń K. Influence of a Six-Week Swimming Training with Added Respiratory Dead Space on Respiratory Muscle Strength and Pulmonary Function in Recreational Swimmers. International Journal of Environmental Research and Public Health. 2020; 17(16):5743. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17165743
Chicago/Turabian StyleSzczepan, Stefan, Natalia Danek, Kamil Michalik, Zofia Wróblewska, and Krystyna Zatoń. 2020. "Influence of a Six-Week Swimming Training with Added Respiratory Dead Space on Respiratory Muscle Strength and Pulmonary Function in Recreational Swimmers" International Journal of Environmental Research and Public Health 17, no. 16: 5743. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17165743