longitudinal study

Why Our Strength and Fitness Peak in Our 20s–30s — and How Exercise Can Push Back the Clock

By MedXY 12/20/2025

A 47-year study shows physical capacity peaks in the late 20s–30s and accelerates downward from about age 40 — but regular exercise, started at any age, can meaningfully delay decline.

news Psychiatry Public Health

Unraveling Depressive Symptom Trajectories in Early Adolescents: Insights from a 12-Month Cohort in Nanchong, China

By MedXY 10/30/2025

This longitudinal study reveals distinct trajectories of depressive symptoms among Chinese adolescents, highlighting key sociodemographic and behavioral predictors that can inform early intervention strategies.

news Pediatrics Specialties

Progression of Transdiagnostic Clinical Stages From Childhood to Young Adulthood: Evidence and Implications

By MedXY 09/28/2025

This review synthesizes cohort and longitudinal studies supporting the progression of transdiagnostic mental health stages from familial risk in childhood through early symptoms in adolescence to clinically significant disorders in young adulthood, independent of early life confounders.