Morphological and Isokinetic Strength Differences: Bilateral and Ipsilateral Variation by Different Sport Activity

Area of Science:

• Sports Medicine
• Human Physiology
• Biomechanics

Background:

• Understanding morphological and strength differences in athletes is crucial for injury prevention and performance optimization.
• Young athletes may develop specific adaptations or asymmetries based on their training regimens.

Purpose of the Study:

• To investigate morphological and isokinetic strength asymmetry and magnitude in young athletes.
• To compare these parameters across different groups including soccer players, floorball players, and non-athletes.

Main Methods:

• One hundred and thirty-nine male subjects (soccer, floorball, non-athletes) were assessed.
• Muscle mass proportion between upper extremities (BADΔ) and lower extremities (BLDΔ) was measured.
• Peak muscle torque of knee extensors (PTE) and flexors (PTF), and strength ratios (H:Q, Q:Q, H:H) were recorded.

Main Results:

• Significant differences in morphological and strength parameters were found across sport activities.
• Soccer players demonstrated higher peak muscle torque (PTE) and bilateral strength ratios (Q:Q) compared to non-athletes and floorball players.
• Non-active individuals showed a higher proportion of muscle mass in upper extremities (BADΔ) compared to soccer players.

Conclusions:

• Morphological and strength asymmetries exist in young athletes and may be influenced by sport-specific demands.
• These asymmetries could potentially lead to maladaptive effects, such as uncompensated limb overload, in athletes.
• Further research is warranted to explore the long-term implications of these findings on athletic health and performance.