Evidence of Parasympathetic Hyperactivity in Functionally Overreached Athletes

Individual Endurance Training Prescription with Heart Rate Variability

“…When HRV is below the SWC, it is indicating increased sympathetic activity, which has been observed to occur after vigorous training periods reflecting insufficient recovery state (16, 23). When HRV is above the SWC, it is indicating increased vagal activity, called parasympathetic hyperactivity, which could also be a sign of functional overreaching (20) ). Therefore, the SWC was decided to be updated after the first four weeks of INT.…”

Evidence of Disturbed Sleep and Increased Illness in Overreached Endurance Athletes

“…However, when the balance between appropriate training stress and adequate recovery is disrupted, an abnormal training response may occur and a state of short-term "overreaching" (functional OR, F-OR) (23) may develop, resulting in a decline in performance. Even though the F-OR state is generally reversed when an appropriate period of recovery is provided (~1-3 weeks) (18,23), it can compromise competition outcomes in the short term, particularly when insufficient recovery is available prior to competition.…”

Intensity, recovery kinetics and well-being indices are not altered during an official FIFA futsal tournament in Oceanian players

“…However, an alternative explanations suggest that higher RPE (as in match 3) combined with unchanged or decreased HR (as in match 4) might reflect a certain degree of fatigue (Halson, 2014;Martin & Andersen, 2000). Moreover, decrease in HR at rest or during exercises is generally detected in functional-overreached athletes (Le Meur et al, 2013) and is sometimes associated with decrease in performance (Aubry, Hausswirth, Louis, Coutts, & Le Meur, 2014). Thus, it is difficult to conclude that the decrease in HR during match 4 reflects fatigue given the match context (7th place play-off).…”