Effect of 12 weeks of detraining and retraining on the cardiorespiratory fitness in a competitive master athlete: a case study.
Details
Serval ID
serval:BIB_B7E421C743FE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Effect of 12 weeks of detraining and retraining on the cardiorespiratory fitness in a competitive master athlete: a case study.
Journal
Frontiers in physiology
ISSN
1664-042X (Print)
ISSN-L
1664-042X
Publication state
Published
Issued date
2024
Peer-reviewed
Oui
Volume
15
Pages
1508642
Language
english
Notes
Publication types: Case Reports ; Journal Article
Publication Status: epublish
Publication Status: epublish
Abstract
This study examined the physiological effects of 12 weeks of detraining and retraining in a highly trained master triathlete (age 53.8 years).
Variables associated with swimming, cycling, and running performance, including O <sub>2max</sub> , peak power output (PPO), gross cycling efficiency (CE), running maximal aerobic velocity (MAV), running economy (RE), muscle strength, and body composition were assessed before the last race of the season (baseline), after 12 weeks of detraining, and after 12 weeks of retraining.
Detraining resulted in a 9.1% and 10.9% decrease in relative O <sub>2max</sub> for cycling and running, respectively. PPO and MAV declined by 12.7% and 8.6%, respectively. After detraining, CE decreased by 6.2%, and RE was 22% higher than the baseline. The maximal strength capacity of the knee extensor muscles decreased by an average of 8.2%. Body fat percentage increased from 10.5% to 13.8%, while lean mass decreased by 2.2 kg. After retraining, almost all variables returned to baseline or even slightly increased, except RE and lean mass, which did not return to baseline.
After 12 weeks of detraining, a lifelong master triathlete can regain his cardiorespiratory fitness (i.e., O <sub>2max</sub> ) with 12 weeks of progressive and structured retraining, but his running economy and lean mass remain slightly depressed.
Variables associated with swimming, cycling, and running performance, including O <sub>2max</sub> , peak power output (PPO), gross cycling efficiency (CE), running maximal aerobic velocity (MAV), running economy (RE), muscle strength, and body composition were assessed before the last race of the season (baseline), after 12 weeks of detraining, and after 12 weeks of retraining.
Detraining resulted in a 9.1% and 10.9% decrease in relative O <sub>2max</sub> for cycling and running, respectively. PPO and MAV declined by 12.7% and 8.6%, respectively. After detraining, CE decreased by 6.2%, and RE was 22% higher than the baseline. The maximal strength capacity of the knee extensor muscles decreased by an average of 8.2%. Body fat percentage increased from 10.5% to 13.8%, while lean mass decreased by 2.2 kg. After retraining, almost all variables returned to baseline or even slightly increased, except RE and lean mass, which did not return to baseline.
After 12 weeks of detraining, a lifelong master triathlete can regain his cardiorespiratory fitness (i.e., O <sub>2max</sub> ) with 12 weeks of progressive and structured retraining, but his running economy and lean mass remain slightly depressed.
Keywords
VO2max, cycling, endurance, peak power output, reconditioning, running, running economy, triathlon
Pubmed
Web of science
Open Access
Yes
Create date
12/12/2024 17:58
Last modification date
21/01/2025 7:26