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Effect of sex and fatigue on quiet standing and dynamic balance and lower extremity muscle stiffness
- Source :
- European Journal of Applied Physiology. 122:233-244
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- The purpose of the present study was to determine whether there are sex differences in fatigue-induced changes in quiet standing and dynamic balance and establish whether changes in muscle torque and resting stiffness may explain the potential sex differences in balance responses. Sixteen recreationally active men (age; 24.8 ± 5.0 years, height; 178.2 ± 5.6 cm, mass; 77.8 ± 13.2 kg) and 10 women (age; 21.0 ± 1.6 years, height; 167 ± 5.3 cm, mass; 61.3 ± 8.9 kg) were assessed for postural sway, Y balance test performance, isokinetic and isometric knee extensor torque and resting stiffness of the vastus lateralis (VL), gastrocnemius lateralis (GL) and Achilles tendon (AT) before and immediately after fatiguing exercise. The fatigue protocol consisted of five sets of 20-drop jumps. The fatiguing exercise elicited similar magnitude (effects size; ES) reductions in muscle torque (men; ES = 0.45–0.80, women; ES = 0.46–0.52), dynamic balance (men; ES = 0.45–0.74, women; ES = 0.47–0.79) and resting VL stiffness (men; ES = 0.46, women; ES = 0.36) in men and women (all p 0.05). Fatiguing exercise, when producing a similar level of force reduction, induces similar magnitude reductions in dynamic postural control and resting VL stiffness in men and women. Distinct deteriorations in quiet standing balance in men but not women were accompanied by modifications in calf muscle stiffness following exercise-induced muscle fatigue.
- Subjects :
- medicine.medical_specialty
Achilles tendon
Muscle fatigue
Sports medicine
Physiology
business.industry
Public Health, Environmental and Occupational Health
General Medicine
Isometric exercise
Muscle stiffness
Physical medicine and rehabilitation
medicine.anatomical_structure
Physiology (medical)
medicine
Orthopedics and Sports Medicine
Dynamic balance
business
Quiet standing
Balance (ability)
Subjects
Details
- ISSN :
- 14396327 and 14396319
- Volume :
- 122
- Database :
- OpenAIRE
- Journal :
- European Journal of Applied Physiology
- Accession number :
- edsair.doi...........30e98445913b83f49d5963b179ecc4ab