Effects of four weeks of inspiratory muscle training with different resistance modalities on pulmonary function and specialized athletic ability in synchronized swimmers: a randomised trial.

After dynamic constant load inspiratory muscle training, there was a highly significant increase in FVC compared to the pre-training period ( p < 0.01), as well as a significant improvement in FVC in the constant-load group ( p < 0.05), and the difference between the two groups was significant after 4 weeks of training.

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