Related Experiment Video
Updated: May 29, 2025
Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations
Published on: May 1, 2018
Knee strength balance ratios are not affected by aging among male runners
Ronaldo Alves da Cunha1, Vinícius Ribeiro Dos Anjos Souza1, Lavínia Vivan1
1Postgraduate Program in Translation Medicine, Federal University of São Paulo, São Paulo, São Paulo, Brazil.
Objectives:
This study aimed to assess thigh muscular strength, conventional and functional strength balance ratios, and muscle quality in well-trained male runners aged 20-70 yr.
Methods:
Eighty-nine male runners were divided into five age categories: 20-29, 30-39, 40-49, 50-59, and 60-70 yr. Participants underwent an isokinetic strength test for knee flexor and extensor muscles and a body composition analysis via dual-energy X-ray absorptiometry.
Results:
No significant difference was observed in concentric peak torque of the knee extensor muscles between the 20-29 and 40-49 age groups. However, the 50-59 age group showed significantly lower strength than the 20-29 age group (p = 0.049), and the 60-70 age group demonstrated significantly lower strength than the 40-49 group (p < 0.001). The conventional and functional balance ratios remain stable across all age groups.
Conclusion:
Knee flexor and extensor strength in male runners decreases significantly after the age of 50, while conventional and functional strength balance ratios remain stable.
More Related Videos
08:26Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running
Published on: July 17, 2020
12:59Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
Related Concept Videos
01:16Bones of the Lower Limb: Femur and Patella
01:29Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...