Related Experiment Video
Updated: Dec 21, 2025
06:00
Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test
Published on: July 27, 2015
13.0K
Fatigue Induced Changes in Muscle Strength and Gait Following Two Different Intensity, Energy Expenditure Matched
Sherveen Riazati1, Nick Caplan1, Marcos Matabuena2
1Department of Sport and Exercise Sciences, School of Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom.
Frontiers in Bioengineering and Biotechnology
|May 12, 2020
Summary
Running training, including high-intensity interval training (HIIT) and medium-intensity continuous runs (MICR), causes significant fatigue-induced changes in hip and knee strength and running mechanics. Individual assessments are crucial for understanding injury risk in runners.
Area of Science:
- Biomechanics
- Exercise Physiology
- Sports Science
Background:
- Running training is essential for athletic performance but can induce physiological changes.
- Understanding the impact of different training intensities on biomechanics is crucial for injury prevention.
Purpose of the Study:
- To investigate changes in hip and knee strength, kinematics, and running variability after medium-intensity continuous runs (MICR) and high-intensity interval training (HIIT).
- To compare the effects of energy expenditure-matched MICR and HIIT on running biomechanics.
Main Methods:
- Twenty healthy master class runners (10 female, 10 male) participated.
- Participants completed both HIIT (six 800m repetitions, 1:1 work:rest) and MICR (matched energy expenditure).
- Hip/knee strength, kinematics, and running variability were assessed pre- and post-run, with analysis using ANOVAs and minimum detectable change (MDC).
Main Results:
- Both HIIT and MICR led to significant reductions in hip and knee strength (12% and 10.6%, respectively).
- Hip frontal plane kinematics and running variability increased post-run, with HIIT showing a greater effect.
- Individual analysis revealed varied responses, with HIIT impacting more runners.
Conclusions:
- Fatigue-induced changes in strength and biomechanics following typical running training may increase injury risk.
- Individual assessment using MDC is recommended over p-values for detecting meaningful changes in runners.
Related Concept Videos
01:24Muscle Recovery and Fatigue
3.8K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
3.8K
01:27Exercise and Muscle Performance
2.2K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
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...
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...
2.2K
01:21Fatigue
751
Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
751