Salivary Testosterone and Cortisol Responses in Professional Rugby Players After Four Resistance Exercise Protocols

Beaven, Christopher Martyn; Gill, Nicholas; Cook, Christian J.

doi:10.1519/jsc.0b013e3181635843

Cited by 78 publications

(121 citation statements)

References 20 publications

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“…This finding is in contrast to previous work into the endocrine response to maximal speed training. However, an increase in salivary testosterone coupled with a decrease in cortisol has been reported post resistance training (6), and a similar response in serum levels has been reported after a repeated sprint-training session consisting of 4 x 250m sprints with 3 minutes recovery between repetitions (29).…”

Section: Endocrine Response To the Speed Only And Speed And Weights supporting

confidence: 56%

The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes

Johnston

Cook

Drake

et al. 2016

Journal of Strength and Conditioning Research

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2The neuromuscular, biochemical, and endocrine responses to a single session versus double session training day in elite athletes. 3 AbstractPurpose: The aim of this study was to compare the acute neuromuscular, biochemical, and endocrine responses of a training day consisting of a speed session only to performing a speed and weight training session on the same day Methods:Fifteen male academy level rugby players completed two protocols in a randomized order. The speed only protocol involved performing 6 maximal effort repetitions of 50m running sprints with 5 minutes recovery between each sprint, while the speed and weights protocol involved the same sprinting session but was followed 2 h post by a lower body weights session consisting of 4 sets of 5 back squat and Romanian deadlift at 85% 1RM. Testosterone, cortisol, creatine kinase, lactate, and perceived muscle soreness were determined immediately before, immediately after, 2h post, and 24h post both protocols. Peak power, relative peak power, jump height, and average rate of force development were determined from a counter movement jump (CMJ) at the same time points. Results: At 24h post, muscle soreness was significantly higher following the speed and weights protocol compared to speed only protocol (effect size eta 2 = 0.253, F = 4.750, p < 0.05). There was no significant difference between any of the CMJ variables at any of the post training time points. Likewise creatine kinase, testosterone, and cortisol were unaffected by the addition of a weight training session. Conclusion:These data indicate that the addition of a weight training session 2h post a speed session, while increasing the perception of fatigue the following day, does not result in a difference in endocrine response or in neuromuscular capability.

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Section: Endocrine Response To the Speed Only And Speed And Weights supporting

confidence: 56%

The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes

Johnston

Cook

Drake

et al. 2016

Journal of Strength and Conditioning Research

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show abstract

“…The cortisol responses observed in the present study were not consistent with previous reports that have shown acute increases in serum cortisol (17,18) or Scortisol (19,20) concentrations after a single bout of a hypertrophy-oriented exercise. Crewther et al (19) suggested that the increase in cortisol concentration is related to the total volume of RE (i.e., number of sets x external load).…”

Section: Discussioncontrasting

confidence: 99%

Do whole-body vibration exercise and resistance exercise modify concentrations of salivary cortisol and immunoglobulin A?

Roschel

Barroso

Batista

et al. 2011

Braz J Med Biol Res

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“…There were no similarities in baseline characteristics (eg, high power output) between the responders and nonresponders to explain the variability in the change of performance to the same training program. One mechanism proposed by Beaven and colleagues 32 suggested that players have differing individual hormonal responses to a single resistance training session. In addition, when players trained using resistance training that elicited the greatest testosterone response, significant improvements in strength occurred.…”

Section: Discussionmentioning

confidence: 99%

Effects of Two Contrast Training Programs on Jump Performance in Rugby Union Players During a Competition Phase

Argus¹,

Gill²,

Keogh³

et al. 2012

International Journal of Sports Physiology and Performance

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Purpose:There is little literature comparing contrast training programs typically performed by team-sport athletes within a competitive phase. We compared the effects of two contrast training programs on a range of measures in high-level rugby union players during the competition season.Methods:The programs consisted of a higher volume-load (strength-power) or lower volume-load (speed-power) resistance training; each included a tapering of loading (higher force early in the week, higher velocity later in the week) and was performed twice a week for 4 wk. Eighteen players were assessed for peak power during a bodyweight countermovement jump (BWCMJ), bodyweight squat jump (BWSJ), 50 kg countermovement jump (50CMJ), 50 kg squat jump (50SJ), broad jump (BJ), and reactive strength index (RSI; jump height divided by contact time during a depth jump). Players were then randomized to either training group and were reassessed following the intervention. Inferences were based on uncertainty in outcomes relative to thresholds for standardized changes.Results:There were small between-group differences in favor of strength-power training for mean changes in the 50CMJ (8%; 90% confidence limits, ±8%), 50SJ (8%; ±10%), and BJ (2%; ±3%). Differences between groups for BWCMJ, BWSJ, and reactive strength index were unclear. For most measures there were smaller individual differences in changes with strength-power training.Conclusion:Our findings suggest that high-level rugby union athletes should be exposed to higher volume-load contrast training which includes one heavy lifting session each week for larger and more uniform adaptation to occur in explosive power throughout a competitive phase of the season.

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Salivary Testosterone and Cortisol Responses in Professional Rugby Players After Four Resistance Exercise Protocols

Cited by 78 publications

References 20 publications

The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes

The Neuromuscular, Biochemical, and Endocrine Responses to a Single-Session Vs. Double-Session Training Day in Elite Athletes

Do whole-body vibration exercise and resistance exercise modify concentrations of salivary cortisol and immunoglobulin A?

Effects of Two Contrast Training Programs on Jump Performance in Rugby Union Players During a Competition Phase

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