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Clementine Grandou, Lee Wallace, Aaron J. Coutts, Lee Bell, and Franco M. Impellizzeri

training in combination with inadequate recovery can result in a decline in performance with or without related physiological and/or psychological signs and symptoms. 4 Resulting maladaptive conditions may include functional overreaching (FOR), nonfunctional overreaching (NFOR), or the overtraining

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Travis Anderson, Laurie Wideman, Flavio A. Cadegiani, and Claudio E. Kater

extend this supposition, it is theoretically reasonable to conceptualize an inverted “U” type response of the CAR across the training/overtraining continuum; however, what constitutes a normal or healthy value at each point on this continuum, for any specific athlete or training program, is certainly

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Flavio A. Cadegiani, Pedro Henrique L. Silva, Tatiana C.P. Abrao, and Claudio E. Kater

Overtraining syndrome (OTS) is a sport-derived disease that results in an unexplained decrease in sport performance and is experienced by the majority of elite athletes at least once in their lifetime. 1 – 4 It is differentiated from other impaired states in sport by the prolonged time course to

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Guro Strøm Solli, Espen Tønnessen, and Øyvind Sandbakk

overreaching or overtraining syndrome, defined as a prolonged maladaptation leading to a decrease in the ability to perform at established levels for a prolonged period. 8 – 12 The overtraining condition is associated with a range of symptoms, such as increased perception of effort during exercise, frequent

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Nils Haller, Tobias Ehlert, Sebastian Schmidt, David Ochmann, Björn Sterzing, Franz Grus, and Perikles Simon

and consequently, to maintain game performance because a lack of sufficient recovery may result in decreased performance, overtraining, illness, or injury. 4 A variety of options for player monitoring leads to a disagreement about the ideal approach. 4 Questionnaires or the assessment of load

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Daniel Birrer

the pain and pushing your body hard. That kind of sport culture encourages overtraining” ( Richardson, Andersen, & Morris, 2008 , p. 159). The reported prevalence of overtraining varies widely, ranging from 5% to 60% ( Birrer, Lienhard, Williams, Röthlin, & Morgan, 2013 ; Kreher, 2016 ). Given the

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Heidi L. Meehan, Stephen J. Bull, Dan M. Wood, and David V.B. James

The present study explored the experiences of five competitive endurance athletes (1 female, 4 male) diagnosed with the overtraining syndrome (OTS). A multicontextual method of inquiry was used, which first involved a medical examination whereby OTS was diagnosed according to established criteria. In addition, 2 questionnaires were administered: the Athlete Daily Hassle Scale (Albinson & Pearce, 1998) and the Coping Response Inventory (Moos, 1992), and a semistructured interview was conducted. Individual case studies were then developed and cross-case analysis carried out. Findings from the present study illustrate that together with sport stress, nonsport stress appears to make an important contribution to the experience of those athletes diagnosed with the OTS. This finding provides evidence to support anecdotes in previous reports.

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Jinger S. Gottschall, Joshua J. Davis, Bryce Hastings, and Heather J. Porter

the neuroendocrine system demonstrates signs of overload due to the extreme demand of physical training without appropriate recovery. 10 It is a pathophysiologic state on the spectrum of overtraining where the training stimulus it too great or recovery is not adequate. Previous literature has

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Judy D. Goss

The personality construct of hardiness has been introduced as a moderator in the stress-illness relationship. Hardy individuals are thought to alter their appraisal of stress into a less stressful form. Mood disturbances have been found to be a product of intensive physical training. This investigation examines the relationships between hardiness and mood disturbances in swimmers who are overtraining and between hardiness, mood disturbances, and coping behaviors. Swimmers (N=253) from eight universities and seven competitive club programs completed the Cognitive Hardiness Inventory, the Profile of Mood States, the Everly Coping Scale, and the Marlowe-Crowne Social Desirability Scale at the beginning of their competitive season, and at two 7-week intervals. Hardy swimmers experienced fewer mood disturbances during the season than nonhardy swimmers. Specifically, hardy swimmers had lower feelings of tension, depression, anger, fatigue, confusion, and higher feelings of vigor. Hardy swimmers also possessed more adaptive coping behaviors.

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Andrew C. Fry, William J. Kraemer, James M. Lynch, and Jason M. Barnes

Objective:

To report a joint-centered mechanism of performance decrements caused by overtraining.

Design:

Case study.

Setting:

Laboratory-induced overtraining.

Participants:

Eleven weight-trained men, 1 (subject A) with overload injury of the knees.

Intervention:

High-intensity squat resistance-exercise overtraining for 2 weeks.

Outcome Measures:

1RM lower-body strength, isokinetic and isometric knee-extension strength, and stimulated isometric knee-extension strength.

Results:

Subject A’s 1RM strength decreased 40.3 kg, and the other overtrained subjects (OT) exhibited significant (P < .05) 1RM decrements (x = –9.3 kg). Isokinetic knee-extension strength decreased for all subjects. For the OT group, voluntary isometric knee-extension strength did not change and stimulated isometric knee-extension strength decreased. Subject A exhibited increased values for both these variables.

Discussion:

These data indicate that muscle strength was attenuated for subject A only during dynamic activity. It is theorized that subject A exhibited a joint-centered overtraining syndrome, with afferent inhibition from the affected joints impairing dynamic strength.