When compared with the W@ , the W@ was associated with higher active energy expenditure ( @ -LSB- @ -RSB- and @ -LSB- @ -RSB- Kcal/min , respectively ; P < @ ) and a similar mean ( standard deviation ) oxygen uptake ( @ -LSB- @ -RSB- and @ -LSB- @ -RSB- ml/min per kilogram , respectively ; P = @ ) .