Related Experiment Video
Updated: May 25, 2025

A Swimming-Induced Zebrafish Exercise Apparatus for Versatile Training Approaches
Published on: October 18, 2024
Detraining Effect on Sprint Swimming Performance and Load-Velocity Profile
Jesús J Ruiz-Navarro1, Óscar López-Belmonte1, Adrián Febles-Castro1
1Aquatics Lab, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.
A 5-week off-season break impairs sprint swimming performance in both male and female swimmers. This decline is linked to detriments in the load-velocity profile, affecting key performance indicators.
Area of Science:
- Sports Science
- Physiology
- Swimming Performance
Background:
- Competitive swimmers often undergo off-season training cessation.
- Understanding the impact of detraining on performance is crucial for effective training periodization.
Purpose of the Study:
- To evaluate the effects of a 5-week training cessation on sprint swimming performance.
- To analyze changes in the load-velocity profile and related physiological variables post-detraining.
Main Methods:
- Twenty-four competitive swimmers (male and female) underwent performance and load-velocity profile testing before and after a 5-week off-season.
- Kinematic data, blood lactate, and perceived exertion were measured during load-velocity profile tests.
Main Results:
- Sprint performance decreased significantly in both males (1.3%) and females (3.8%).
- Load-velocity profile showed a reduced maximum load at zero velocity.
- Females experienced a decline in clean swimming speed, while males compensated by increasing stroke length.
Conclusions:
- A 5-week off-season period leads to detriments in sprint swimming performance and the load-velocity profile.
- Physiological and biomechanical variables, including blood lactate and stroke rate, are altered post-detraining.
Related Concept Videos
Exercise and Muscle Performance
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Muscle Recovery and Fatigue
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...
Cardiac Output II: Effect of Stroke Volume on Cardiac Output
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...

