Predictors of individual adaptation to high‐volume or high‐intensity endurance training in recreational endurance runners

Abstract

The aim of this study was to investigate factors that can predict individual adaptation to high-volume or high-intensity endurance training. After the first 8-week preparation period, 37 recreational endurance runners were matched into the high-volume training group (HVT) and high-intensity training group (HIT). During the next 8-week training period, HVT increased their running training volume and HIT increased training intensity. Endurance performance characteristics, heart rate variability (HRV), and serum hormone concentrations were measured before and after the training periods. While HIT improved peak treadmill running speed (RSpeak ) 3.1 ± 2.8% (P < 0.001), no significant changes occurred in HVT (RSpeak : 0.5 ± 1.9%). However, large individual variation was found in the changes of RSpeak in both groups (HVT: -2.8 to 4.1%; HIT: 0-10.2%). A negative relationship was observed between baseline high-frequency power of HRV (HFPnight ) and the individual changes of RSpeak (r = -0.74, P = 0.006) in HVT and a positive relationship (r = 0.63, P = 0.039) in HIT. Individuals with lower HFP showed greater change of RSpeak in HVT, while individuals with higher HFP responded well in HIT. It is concluded that nocturnal HRV can be used to individualize endurance training in recreational runners.

The Effect of Different High-Intensity Periodization Models on Endurance Adaptations

“…This finding is consistent with other recent studies (16,34). Furthermore, a response distribution analysis for Power 40min revealed no significant differences in the variability of response across groups (Fig.…”

Somatic, Endurance Performance and Heart Rate Variability Profiles of Professional Soccer Players Grouped According to Age

“…Patil et al (2013) reported that yoga practice helped to reduce mental stress associated with chronic training in cyclists and optimized autonomic cardiac function. In addition to the above factors, attenuated vagal activity is related to intensive blocks of training (Pichot et al, 2000) and is significantly associated with weaker adaptation responses to both aerobic (Botek et al, 2014a; Buchheit, 2014; Hautala et al, 2009; Vesterinen et al, 2015) and anaerobic training (Boutcher et al, 2013). Based on our findings, we propose the implementation of regular HRV monitoring during training in professional soccer players as it provides important diagnostic information about changes in autonomic cardiac regulation over their careers.…”

Heart rate variability in the standing position reflects training adaptation in professional soccer players

“…We expected a significant increase of this marker between T0 and T1, i.e., between the end of a period of inactivity and the end of a gradual resumption of soccer ("Warmup" period, Carter et al 2003;Mourot et al 2004a;Buchheit et al 2010;Vesterinen et al 2015). Professional soccer players are highly trained and the period of inactivity was perhaps not long enough to detrain them significantly.…”

“…The lack of significant change in lnRMSSD in the supine position during this training period could be a consequence of heterogeneity induced in our study group by the training itself. All the players followed the same training programme while it is known that their positions (striker or side defender) alter training load on the first hand (Ingebrigtsen et al 2015) and that training adaptation depend upon individuals on the second hand (Vesterinen et al 2015). Moreover, several patterns of fatigue have been described including by means of HRV (Schmitt et al 2015).…”