Academic Journal
Combined effects of inspiratory and core muscle training on respiratory and core muscle function, limb muscle oxygenation and swimming performance.
| Title: | Combined effects of inspiratory and core muscle training on respiratory and core muscle function, limb muscle oxygenation and swimming performance. |
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| Authors: | Pratama AB; Department of Sports Science, Faculty of Sports Science, Chulalongkorn University, Bangkok, Thailand., Chidnok W; Exercise and Rehabilitation Sciences (ERS) Research Unit, Department of Physical Therapy, Faculty of Allied Health Sciences, Naresuan University, Phitsanulok, Thailand., Yimlamai T; Department of Sports Science, Faculty of Sports Science, Chulalongkorn University, Bangkok, Thailand. |
| Source: | Journal of sports sciences [J Sports Sci] 2026 Jul; Vol. 44 (13), pp. 1657-1671. Date of Electronic Publication: 2026 May 14. |
| Publication Type: | Journal Article; Randomized Controlled Trial |
| Language: | English |
| Journal Info: | Publisher: Routledge Country of Publication: England NLM ID: 8405364 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1466-447X (Electronic) Linking ISSN: 02640414 NLM ISO Abbreviation: J Sports Sci Subsets: MEDLINE |
| Imprint Name(s): | Publication: 2007- : London : Routledge Original Publication: [London, England] : Published by E. & F.N. Spon on behalf of the Society of Sports Sciences, [c1983- |
| MeSH Terms: | Swimming*/physiology , Respiratory Muscles*/physiology , Oxygen Consumption*/physiology , Breathing Exercises*/methods , Athletic Performance*/physiology , Physical Conditioning, Human*/methods, Muscle Strength/physiology ; Physical Endurance/physiology ; Intercostal Muscles/physiology ; Quadriceps Muscle/physiology ; Humans ; Male ; Young Adult ; Adolescent |
| Abstract: | This study examined the effects of core training (CMT), inspiratory muscle training (IMT) and their combination (CIT) on strength and endurance of respiratory and core muscles, muscle oxygenation and swimming performance. Twenty-five competitive male swimmers, aged 15-20 years, were randomly assigned to one of three groups: CMT (n = 9), who performed core exercises; IMT (n = 8), who underwent inspiratory threshold-load training at 60-80% of maximal inspiratory pressure (MIP); or CIT (n = 8), who performed both, three times per week for 6 weeks in addition to their swimming training. MIP and inspiratory muscle endurance (IME), core strength and endurance, intercostals (IC) and vastus lateralis (VL) muscle oxygenation, and swimming performance were measured before and after intervention. Whilst CIT and IMT significantly improved MIP and IME, core strength and endurance were increased after CIT and CMT. Interestingly, only CIT showed a greater improvement in swim time (-4.74%, P < 0.001) compared to CMT and concomitantly increased VL, but not IC muscle deoxygenation post-swim. These findings suggest that supplementing 6 weeks of CIT to usual swimming training produced greater improvement in swimming performance compared to CMT, but not IMT, partly through improving oxygen extraction in locomotor muscles in young swimmers. |
| Contributed Indexing: | Keywords: Inspiratory muscle strength; core training; front crawl; intercostal muscle; muscle deoxygenation |
| Entry Date(s): | Date Created: 20260515 Date Completed: 20260717 Latest Revision: 20260717 |
| Update Code: | 20260718 |
| DOI: | 10.1080/02640414.2026.2673476 |
| PMID: | 42135915 |
| Database: | MEDLINE |
| ISSN: | 1466-447X |
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| DOI: | 10.1080/02640414.2026.2673476 |