Premium version 3

The minimal HR (HR_min), peak HR (HR_peak), and average HR (HR_average) were recorded each day of the WU exercises. Time spent in particular HR zones during the WU activities was also evaluated using commercial software (Premium version 3.2, Kubios, Kuopio, Finland). HR zones were divided as follows: inactive: <50% of the maximal HR (HR_max); very light: 50–60% of the HR_max; light: 60–70% of the HR_max; moderate: 70– 80% of the HR_max; hard: 80–90% of the HR_max; and maximum: 90–100% of the HR_max. The age-predicted HR proposed by Fox and Haskell (1970) was used (HR_max= 220 – age).

The EE was calculated using the Kubios Premium version 3.2 software (Kubios, Kuopio, Finland). Variables considered included the basal metabolic rate (BMR), diet induced thermogenesis (DIT), activity-related EE (AEE), and total EE (TEE). The BMR was calculated using the Mifflin St. Jeor equation: 9.99 × weight (kg) + 6.25 × height (cm) – 4.92 × age + 5 (Mifflin et al., 1990 (link)). The AEE was estimated using Keytel et al.’s (2005) (link) model: AEE = sex (-55.0969 + 0.6309 × HR + 0.1988 × weight + 0.2017 × age) + (1–sex) × (-20.4022 + 0.4472 × HR – 0.1263 × weight + 0.074 × age), where male sex was 1 and female sex was 0.