Inter-individual variability in peripheral oxygen saturation and repeated sprint performance in hypoxia
An Observational Study of Highly-Trained Subjects
Bibliographic Data
| ID | 7780673 |
|---|---|
| Authors | Naoya Takei (0009-0008-6412-9010, Japan Women's College of Physical Education, corresponding author), Ryuji Muraki (Surugadai University), Olivier Girard (0000-0002-4797-182X, The University of Western Australia), Hideo Hatta (0000-0002-1428-5911, The University of Tokyo) |
| Year | 2024 |
| Volume | 6 |
| Pages | 1452541-1452541 |
| Publication date | 2024-08-08 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Frontiers in Sports and Active Living (JOURNAL) |
| Journal identifiers | ISSN: 2624-9367 • E-ISSN: 2624-9367 |
| Publisher | Frontiers Media SA (PUBLISHER • CH) |
| DOI | 10.3389/fspor.2024.1452541 |
| PMID | 39176235 |
| OpenAlex | W4401433834 |
| Language | EN |
| Citations received | 1 |
| References cited | 13 |
Individual variations in peripheral oxygen saturation (SpO 2 ) during repeated sprints in hypoxia and their impact on exercise performance remain unclear despite fixed external hypoxic stimuli (inspired oxygen fraction: FiO 2 ). This study examined SpO 2 individual variations during repeated sprints in hypoxia and their impact on exercise performance. Thirteen highly-trained sprint runners performed 10 × 10-s cycle sprints with 30-s passive recoveries in normobaric hypoxia (FiO 2 : 0.150). Mean power output (MPO), post-sprint SpO 2 , and heart rate for each sprint were assessed. Sprint decrement score (S dec ), evaluating fatigue development, was calculated using MPO variables. Participants were categorized into a high saturation group (HiSat, n = 7) or a low saturation group (LowSat, n = 6) based on their mean post-sprint SpO 2 (measured 10–15 s after each sprint). Individual mean post-sprint SpO 2 ranged from 91.6% to 82.2%. Mean post-sprint SpO 2 was significantly higher ( P < 0.001, d = 1.54) in HiSat (89.1% ± 1.5%) than LowSat (84.7% ± 1.6%). A significantly larger decrease in S dec ( P = 0.008, d = 1.68) occurred in LowSat (−22.3% ± 2.3%) compared to HiSat (−17.9% ± 2.5%). MPO ( P = 0.342 d = 0.55) and heart rate ( P = 0.225 d = 0.67) did not differ between groups. There was a significant correlation ( r = 0.61; P = 0.028) between SpO 2 and S dec . In highly-trained sprint runners, individual responses to hypoxia varied widely and significantly affected repeated sprint ability, with greater decreases in SpO 2 associated with larger performance alterations (i.e., larger decrease in S dec
Cardiology · Hypoxia (environmental · Observational study · Oxygen · Oxygen saturation · Peripheral · Physical medicine and rehabilitation · Physical therapy · Saturation (graph theory · Sprint · Cardiovascular and Diving-Related Complications · Cardiovascular and exercise physiology · Chemistry · High Altitude and Hypoxia · Mathematics · Medicine · Psychology · Internal Medicine
| Unique citing works | 1 |
|---|---|
| Citations per year | 1 |
| Citation span | 2025 - 2025 (1) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 1 |