Physiological responses during static apnoea efforts in elite and novice breath-hold divers before and after two weeks of dry apnoea training.
Respir Physiol Neurobiol
; 319: 104168, 2024 Jan.
Article
em En
| MEDLINE
| ID: mdl-37797907
ABSTRACT
This study examined the effect of breath-hold (BH) training on apnoeic performance in novice BH divers (NBHn = 10) and compared them with data from elite BH divers (EBHn = 11). Both groups performed 5-maximal BHs (PRE). The NBH group repeated this protocol after two weeks of BH training (POST). The NBH group during BH efforts significantly increased red blood cell concentration (4.56 ± 0.16Mio/µl) by 5.06%, hemoglobin oxygen saturation steady state duration (110.32 ± 29.84 s) by 15.48%, and breath-hold time (BHT144.19 ± 47.35 s) by 33.77%, primarily due to a 59.70% increase in struggle phase (71.85 ± 30.89 s), in POST. EBH group exhibited longer BHT (283.95 ± 36.93 s) and struggle-phase (150.10 ± 34.69 s) than NBH (POST). Elite divers recorded a higher peak MAP (153.18 ± 12.28 mmHg) compared to novices (PRE123.70 ± 15.65 mmHg, POST128.30 ± 19.16 mmHg), suggesting that a higher peak MAP is associated with a better BHT. The concurrent abrupt increase of diaphragmatic activity and MAP, seen only in the EBH group, suggests a potential interaction. Additionally, apnoea training increases red blood cells concentration in repeated apnoea efforts and increases BH stamina.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Apneia
/
Mergulho
Limite:
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article