Three-Domain Framework Examining Psychological Strain, Nutritional Intake Behavior, and Physical Activity Engagement within South Asian Tertiary Learners: Occurrence, Distribution, and Relationships

Abstract

The intersection of psychological strain, nutritional intake behavior, and physical activity engagement represents a critical triad influencing the health and academic performance of tertiary learners, particularly within South Asian contexts characterized by socio-economic diversity and evolving lifestyle patterns. This technical paper develops a three-domain analytical framework to investigate the occurrence, distribution, and interrelationships among these domains using multidisciplinary theoretical grounding and empirical insights derived from existing literature.

The study integrates physiological monitoring approaches (Shimono et al., 1998; Ishibashi et al., 1999), behavioral and sociological constructs of physical activity (Dasong, 2012; Xingpu, 2011), and lifestyle pattern analyses in student populations (Agarwal & BoopathyUsharani, 2026). The framework conceptualizes psychological strain as a measurable construct influenced by cognitive load, stress exposure, and environmental stimuli; nutritional behavior as a function of socio-cultural, economic, and psychological drivers; and physical activity as a mediating variable affected by both structural and individual-level determinants.

The analysis reveals that these domains are not independent but dynamically interlinked. Elevated psychological strain is associated with irregular dietary patterns and reduced physical activity, while structured physical engagement demonstrates a moderating effect on stress indicators. Nutritional behavior further mediates physiological responses, influencing both cognitive performance and emotional stability. These findings align with contemporary longitudinal observations emphasizing lifestyle interdependencies among students (Agarwal & BoopathyUsharani, 2026).

A key contribution of this study is the development of a systems-based model that integrates physiological, behavioral, and socio-environmental variables into a unified analytical framework. The model enables the identification of high-risk profiles and supports targeted intervention strategies. However, limitations exist in terms of data generalizability and the complexity of capturing real-time behavioral dynamics.

The study concludes by proposing adaptive intervention mechanisms, including data-driven monitoring systems and policy-level initiatives, aimed at improving student well-being. This research contributes to both academic discourse and practical policy design by offering a structured approach to understanding and addressing multidimensional health challenges in higher education environments.