More evidence on respiratory muscle training
Physical Fitness and Performance
“INSPIRATORY MUSCLE TRAINING IMPROVES ROWING PERFORMANCE”
STEFANOS VOLIANITIS, ALISON K. MCCONNELL, YIANNIS KOUTEDAKIS, LARS MCNAUGHTON, KARRIANNE BACKX, and DAVID A. JONES.
The purpose of this study was to investigate the effects of a period of resistive Inspiratory Muscle Training (IMT) upon rowing performance. The study consisted of 14 female rowers divided into two groups of seven: one training group and one placebo group. This 11-week trial involved inspiratory muscle training on a rowing ergometer with a 6-minute, all-out effort and a 5000-m trial.
In the training group, IMT consisted of 30 inspiratory efforts twice daily. Each effort required the subject to inspire against a resistance equivalent to 50% peak inspiratory mouth pressure by using an inspiratory muscle training device. In the placebo group, they used the same device but inhaled 60 times once daily with an inspiratory resistance equivalent to 15%.
The results revealed that the participants in the training group increased their inspiratory muscle strength markedly compared to the placebo group. Their rowing performance improved to a greater extent than with conventional training alone based on 6-minutes of all-out effort and a 5000-m trial.
Journal of Sports Science and Medicine
“EFFECTS OF ADDITIONAL RESPIRATORY MUSCLE ENDURANCE TRAINING IN WELL-TRAINED SWIMMERS”
FRÉDÉRIC LEMAITRE, JÉRÉMY B. COQUART, FLORENCE CHAVALLARD, INGRID CASTRES, PATRICK MUCCI, GUILLAUME COSTALAT AND DIDIER CHOLLET
This study consisted of two groups of elite swimmers, with 10 in each group. One group performed Respiratory Muscle Endurance Training (RMET) for an 8-week period. The other group also trained for an 8-week period, this time without RMET. Both groups followed the same training sessions 5 to 6 times per week.
The results showed that improvements in ventilatory function parameters, chest expansion, respiratory muscle strength and endurance, and performance were found only in the RMET group. Moreover, perceived exertion and dyspnea were also lower in the RMET group.
“EFFECT OF RESPIRATORY MUSCLE TRAINING ON EXERCISE PERFORMANCE IN HEALTHY INDIVIDUALS”
SABINE K. ILLI, CHRISTINA M. SPENGLER, ULRIKE HELD AND IRÉNE FRANK
This study involving healthy individuals consisted of two distinct types of Respiratory Muscle Training (RMT): respiratory muscle strength and respiratory endurance training. The study was controlled by a systematic review and meta-analysis in order to determine the factors affecting changes in endurance performance after RMT.
The study encompassed various RMT studies, with participants assessing changes in endurance exercise performance using maximal tests. These tests were screened and abstracted by two independent investigators. A multiple linear regression model was used to identify any effects of subjects’ fitness, type of RMT, type of exercise test, test duration and type of sport, on changes in performance after RMT. Additionally a meta-analysis was performed to determine the effects of RMT on endurance performance.
The Multiple Linear Regression Analysis, which included 46 original studies, revealed that less fit subjects stand to benefit more from RMT than highly trained athletes. Improvements did not differ significantly between inspiratory muscle strength and respiratory muscle endurance training, while combined, inspiratory and expiratory muscle strength training seemed to be superior in improving performance.
Moreover, the results of the study showed that RMT improves endurance exercise performance in healthy individuals. Greater improvements were seen in less fit individuals and in sports of lengthier durations. The improvements were similar between different types of sports.