Key result
High training time between metabolic and ventilatory thresholds linked to ~118% greater VO2θ increase.
Why the study?
Variable VO2max improvements from non-specific exercise intensity protocols highlight a lack of consensus on optimal heart rate training zones for maximal athletic performance.
Does a higher percentage of time spent training between metabolic and ventilatory thresholds improve markers of aerobic performance in collegiate triathletes?
Observational (n=13)
Does a higher percentage of time spent training between metabolic and ventilatory thresholds improve markers of aerobic performance in collegiate triathletes?
Effect estimate: g = 1.26 (95% CI -0.38, -0.03)
Absolute Event Rate: 0.37% vs 0.17%
Increasing the percentage of time triathletes spend exercising between metabolic and ventilatory thresholds may optimize increases in oxygen uptake at the metabolic threshold.
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Associated with greater VO2θ gains in triathletes; hypothesis-generating and requires randomized confirmation before practice change.
Neufeld et al. (2019) conducted an observational in Collegiate club-level triathletes (n=13). High percentage of time training between metabolic and ventilatory thresholds vs. Low percentage of time training between metabolic and ventilatory thresholds was evaluated on Change in oxygen uptake at metabolic threshold (VO2θ) (g = 1.26, 95% CI -0.38, -0.03). Spending a high percentage of training time between metabolic and ventilatory thresholds resulted in a significantly greater increase in VO2θ compared to a low percentage (0.37 vs 0.17 L/min).
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