Sport 1984-1985 : Ontwikkelingen en kosten

Developments in practice of sports: relation with costs. Actual and wished practice of sports: quantity and quality / perception of own sporting behaviour / changes in practice...体育实践的发展动态：与成本的关联。实际开展与期望开展的体育实践：参与数量与质量、自身体育行为的自我认知、实践活动的变化……