Claire-Marie Roberts and Jacky Forsyth
Jacky J. Forsyth, Chris Mann, and James Felix
In rowing ergometry, blood for determining lactate concentration can be removed from the toe tip without the rower having to stop. The purpose of the study was to examine whether sampling blood from the toe versus the earlobe would affect lactate threshold (Tlac) determination.
Ten physically active males (mean ± age 21.2 ± 2.3 y; stature 179.2 ± 7.5 cm; body mass 81.7 ± 12.7 kg) completed a multistage, 3 min incremental protocol on the Concept II rowing ergometer. Blood was sampled simultaneously from the toe tip and earlobe between stages. Three different methods were used to determine Tlac.
There were wider variations due to the method of Tlac determination than due to the sample site; for example, ANOVA results for power output were F(1.25, 11.25) = 11.385, P = .004 for method and F(1, 9) = 0.633, P = .45 for site. The greatest differences in Tlac due to sample site in rowing occurred when Tlac was determined using an increase in blood lactate concentration by >1 mmol/L from baseline (TlacΔ1).
The toe tip can be used as a suitable sample site for blood collection during rowing ergometry, but caution is needed when using the earlobe and toe tip interchangeably to prescribe training intensities based on Tlac, especially when using TlacΔ1 or at lower concentrations of lactate.
Jacky J. Forsyth, Lorna Makay, and Victoria Riley
The purpose of the current study was to explore, via interview, how and why women felt their physical activity levels and active lifestyles had been affected by COVID-19. Telephone interviews were conducted with 23 women, aged between 28 and 52 years from a variety of socioeconomic backgrounds in the United Kingdom. Based on reflexive thematic analysis, the perceived reduction in exercise and the increase in sedentary behavior that many of these women experienced were felt to be a result of the physical restrictions imposed through gym and leisure-facility closure, the change in circumstance (both work and home life), the perceived risks associated with exercising during a pandemic, as well as a lack of peer support. In contrast, some women experienced increased opportunity and time to exercise, which they felt benefited their health. For any future pandemic-related restrictions, exercise practitioners should consider promoting exercise with others in a safe environment in order to ensure that women’s healthy exercise and lifestyle behaviors are maintained.