Table 1

Outcome variables measured at each time point

Type of Variable	Constructs measured	Test	Measurement point				Time (min)
Type of Variable	Constructs measured	Test	B	3M	6M	12M	Time (min)
Primary	Self-efficacy	Exercise Self-efficacy and resistance training self-efficacy and outcome expectancy questionnaire	●	●	●	●	5
	Physical self-worth	PSW scale	●	●	●	●	8
	Self-concept (self-esteem)	SPAA	●	●	●	●	5–10
Secondary	Body composition	DEXA	●		●	●	20
	Body composition	Stature, mass and skinfolds	●	●	●	●	20
	Strength	1RM Leg and Bench press	●	●	●	●	30–45

1RM, one repetition maximum; 3M, 3 months; 6M, 6 months; 12M, 12 months; B, baseline, DEXA, dual energy X-ray absorptiometry; PSW, physical self-worth; SPAA, self-perception profile for adolescents.