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Iñigo Mujika

communication with the author. CHO = carbohydrate; HCHO = high carbohydrate; LCHF = low carbohydrate, high fat; W = average power output. Subjective Well-Being The athlete reported that the months on the LCHF diet were mentally very tough: He had many psychic slumps and some feelings of depression. He

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Peter Hassmén and Eva Blomstrand

Morgan’s well-known iceberg profile, characterized by Profile of Mood States (POMS) scores above the population norm on vigor and below the norm on tension, depression, anger, fatigue, and confusion, is said to indicate a successful athlete. Preperformance POMS scores of team members might therefore give a prior indication of the actual team performance. Nine female soccer players from the same team participated in the study. The players completed the POMS before, immediately after, and 2 hours after each game during a season. The outcome of the games greatly affected the players’ mood states. Tension, depression, anger, and confusion scores were lower (ps < .01), and vigor was higher (p < .01) when the team won. Prior to the games, only minor differences in POMS scores were detected, regardless of the actual outcome. Taken together, the results do not support the notion that POMS scores could be helpful in predicting team performance.

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Yoshiko Yoshioka, Takashi Umeda, Shigeyuki Nakaji, Arata Kojima, Masaru Tanabe, Noriko Mochida and Kazuo Sugawara

We examined gender-related differences in the psychological response to weight reduction in 43 judoists. Twenty-two males and 8 females who required weight reduction [weight reduction (WR) group] (the average percentages of weight reduction observed for males and females were 3.4% and 4.9%, respectively), and 5 males and 8 females who did not require weight reduction (non-WR group). The POMS scores were measured before and after weight reduction. The TMD (total mood disturbance) score in POMS significantly increased after weight reduction only in WR group males. In the female WR group, the anger and depression scores decreased after weight reduction, and the pre-value of the TMD score in this group was relatively high. The psychological stress may be caused by anxiety engendered by the overall concept of weight reduction before actual weight reduction in females, whereas in males it may be caused by the actual weight reduction.

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Edward Gregg and W. Jack Rejeski

This article reviews both human and nonhuman primate research dealing with the social psychobiologic effects of anabolic/androgenic steroids (AS). Descriptive research and anecdotal reports within the realm of sport suggest that AS may have a variety of psychological and behavioral effects including psychotic episodes and increased aggression. Recent investigations with a nonhuman primate model confirm that the effects of AS on psychological states and overt behavior can be quite varied, ranging from those that can be characterized as active (e.g., mania and aggression) to more passive states (e.g., depression and social withdrawal). There are also profound physiological effects of a biobehavioral origin that constitute a risk for cardiovascular disease. The most striking aspect of AS is that the effects of this drug are due to an interaction between its pharmacologic properties and the social milieu.

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Maria Francesca Piacentini and Romain Meeusen

Purpose:

This longitudinal case study evaluated the effectiveness of an online training-monitoring system to prevent nonfunctional overreaching (NFOR).

Methods:

A female master track and field athlete was followed by means of a daily online training diary (www.spartanova.com) and a weekly profile of mood state (POMS). The online diary consists of objective training data and subjective feelings reported on a 10-cm visual analog scale. Furthermore, parameters that quantify and summarize training and adaptation to training were calculated. The novelty consists in the inclusion of a specific measuring parameter tested to detect NFOR (OR score).

Results:

During track-season preparation, the athlete was facing some major personal changes, and extratraining stress factors increased. Despite the fact that training load (TL) did not increase, the or score showed a 222% and then a 997% increase compared with baseline. POMS showed a 167% increase in fatigue, a 38% decrease in vigor, a 32% increase in depression scores, and a total mood increase of 22%, with a 1-wk shift compared with the OR score. A 41% decrease in TL restored the OR score and POMS to baseline values within 10 d.

Conclusion:

The results demonstrate that immediate feedback obtained by “warning signals” to both athletes and coaches, based on individual baseline data, seems an optimal predictor of FOR/NFOR.

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Stephen Hill, Wesley Box and Robert A. DiSilvestro

Lipid peroxides can be both a product and an initiator of oxidant stress. Conceivably, exercise can either increase concentrations of lipid peroxides (by causing oxidant stress), or decrease them (by accelerating peroxide breakdown). The net effect could depend on exercise intensity and nutritional intake of antioxidants. The present study examined the response of serum lipid peroxides to the combination of moderate intensity, weight resistance exercise plus intake of soy protein, a source of antioxidant phytochemicals. Recreationally trained, young adult men (N = 18) consumed soy protein or antioxidant-poor whey protein for 4 weeks (40 g protein/d) before a session of moderate intensity, weight resistance exercise. In the soy group, exercise decreased values for serum lipid peroxides at 5 min, 3 h, and 24 h post-exercise. The whey group showed the depression only at 24 h. In both the soy and whey groups, a small rise was seen for interleukin-8, which is consistent with the idea that the exercise session induced a moderate muscle stress. In summary, a moderate intensity, weight resistance exercise session, despite inducing mild inflammation, depressed plasma serum peroxide values, especially when combined with 4 weeks of soy consumption.

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Clemens von Schacky, Maximilian Kemper, Robert Haslbauer and Martin Halle

The Omega-3 Index is defined as erythrocyte eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and represents an individual’s status in these two marine omega-3 fatty acids. A target range of 8 to 11% has been suggested, because values below predispose to cardiovascular events, especially sudden cardiac death, as well as to suboptimal brain function, like prolonged reaction times or even depression. Compared with the general population, elite athletes have an increased incidence of sudden death. The Omega-3 Index has not yet been investigated in elite athletes. In an exploratory approach, we determined the Omega-3 Index in 106 consecutive German national elite winter endurance athletes presenting for preparticipation screening, using a well-established analytical procedure (HS-Omega-3 Index). Surprisingly, only one athlete had a value within the target range, but all others had values <8%. We conclude that we have identified a deficiency of EPA and DHA in these elite athletes. This deficiency presents a potential option for prevention of cardiovascular events such as sudden cardiac death, and improving aspects of brain function. It will be important to scrutinize our finding by more thorough epidemiologic studies and appropriate intervention trials.

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Takaaki Mishima, Takashi Yamada, Makoto Sakamoto, Minako Sugiyama, Satoshi Matsunaga, Hirohiko Maemura, Muneshige Shimizu, Yoshihisa Takahata, Fumiki Morimatsu and Masanobu Wada

This study was conducted to determine whether dietary chicken-breast extract (CBEX), a rich source of histidine-containing dipeptides, could modify exerciseinduced changes in sarcoplasmic reticulum (SR) function. After 5 weeks of dietary CBEX, SR Ca2+-handling ability was examined in the vastus lateralis muscles of rats subjected to high-intensity running for 2.5 min. Dietary CBEX caused an approximately 15% and 45% increase (p < .01) in muscle carnosine and anserine concentrations, respectively. In resting muscles, depressions in SR Ca2+–ATPase activity were evoked by dietary CBEX without concomitant changes in SR Ca2+ uptake and release rates. The data confirm that high-intensity exercise depresses SR Ca2+ handling. In spite of the same run time, SR Ca2+ handling was reduced to a lesser degree in muscles of CBEX-containing-chow-fed rats than in standard-chow-fed rats (p < .05). These results suggest that dietary CBEX might attenuate deteriorations in SR Ca2+-handling ability that occur with high-intensity exercise.

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Robert Weinberg, Allen Jackson and Kathleen Kolodny

The purpose of the present investigation was to assess the relationship between exercise, massage, and positive mood enhancement. Subjects were students in physical education classes including swimming, jogging, tennis, and racquetball, with each separate activity comprising a level of the primary independent treatment variable. In addition, subjects from other classes made up a control rest condition and a massage treatment condition resulting in a one-way design. All subjects completed the profile of mood states, state anxiety, and an activation checklist just prior to and immediately after 30 minutes of activity. Instructors in the classes agreed not to schedule any competitions between students but rather just let them play or exercise. Subjects in the control rest condition read or rested for 30 minutes, while in the massage treatment condition a certified massage therapist gave a 30-min Swedish massage. Results indicated that the running and massage conditions consistently produced positive mood enhancement with significant decreases in tension, confusion, fatigue, anxiety, depression, and anger while maintaining high levels of vigor, which is representative of positive mental health. None of the other experimental activity conditions significantly influenced the dependent variables. Practical applications of the use of massage both before and after competition and exercise are discussed, and future directions for research are offered.

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Andres E. Carrillo, René J. L. Murphy and Stephen S. Cheung

Purpose:

Prolonged physical exertion and environmental heat stress may elicit postexercise depression of immune cell function, increasing upper respiratory tract infection (URTI) susceptibility. We investigated the effects of acute and short-term vitamin C (VC) compared with placebo (PL) supplementation on URTI susceptibility, salivary immunoglobulin A (s-IgA), and cortisol responses in healthy individuals following prolonged exercise-heat stress.

Methods:

Twelve participants were randomized into the VC or PL group in a double-blind design. For 12 days, participants consumed 3 × 500 mg tablets of VC or PL per day, with testing completed at baseline, then following acute (1 d) and short-term (8 d) supplementation. Participants performed 120.1 ± 49.6 min of cycling at 54 ± 6% VO2max in a hot (34.8 ± 1.0°C and 13 ± 3% relative humidity) environment, with saliva samples collected at pre-, post-, and 72 h postexercise. Health logs specifying URTI symptoms were completed for 7 days postexercise.

Results:

A 2 × 3 × 3 mixed ANOVA with a post hoc Bonferroni correction factor revealed a significant linear trend in postexercise cortisol attenuation in the VC group, 21.7 ± 15.1 nmol/L (mean ± SD) at baseline, to 13.5 ± 10.0 at acute, to 7.6 ± 4.2 after short term (P = .032). No differences were detected in ratio of s-IgA to protein or URTI symptoms between groups.

Conclusions:

These data suggest that vitamin C supplementation can decrease postexercise cortisol in individuals performing exercise similar to that of a half-marathon or marathon in hot conditions. However, no changes in s-IgA and URTI were evident, possibly due to previous moderate training and reduced physical and psychological stress compared with athletes participating in ultramarathons.