Vigorous physical activity patterns affect bone growth during early puberty in boys

Area of Science:

• Pediatric bone health
• Adolescent physical activity
• Skeletal development research

Background:

• Bone development is crucial during adolescence.
• Vigorous physical activity (VPA) is linked to bone health.
• Understanding VPA's impact on bone development is important.

Purpose of the Study:

• To analyze the effects of different patterns of vigorous physical activity (VPA) on bone development in adolescents.
• To determine how changes in VPA participation influence bone mineral parameters.
• To investigate the association between VPA patterns and bone growth trajectories.

Main Methods:

• 140 healthy male adolescents (11-13 years) underwent accelerometry and DXA scans over one year.
• Four VPA evolution patterns (low-low, low-high, high-low, high-high) were defined.
• Bone growth patterns (optimal, mean, reduced) were identified using cluster analysis.

Main Results:

• The "low-high" VPA group showed significantly greater BMD increases at the femoral neck and lumbar spine compared to the "low-low" group.
• The "high-high" VPA group had a greater femoral neck BMD increase than the "high-low" group.
• A higher percentage of "optimal" bone growth was observed in the "low-high" VPA group.

Conclusions:

• Engaging in and maintaining vigorous physical activity during puberty is associated with enhanced bone mass accrual.
• Increased VPA participation during adolescence positively impacts bone development.
• These findings highlight the importance of VPA for future bone health in adolescents.