Nicolai Thygesen

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Posts posted by Nicolai Thygesen

  1. Værs go`. Den er noget kort, den artikel, troede først at bare var et abstract, men det er altså den fulde artikel.

    Volume 36(5) Supplement May 2004 p S238

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    24-Hour Serum Testosterone Concentrations Following Acute Moderate and High-Volume Resistance Exercise

    [Annual Meeting Abstracts: F-16 – Free Communication/Slide: Endocrinology – GH/Testosterone]

    Alemany, Joseph A.1; Kellogg, Mark D.2; Sharp, Marilyn A.1; Tuckow, Alexander P.1; Staab, Jeffery S.1; Patton, John F.1; Nindl, Bradley C. FACSM1

    1Military Performance Division, U.S. Army Research Institute of Enviormental Medicine, Natick, MA.

    2Military Nutrition Division, U.S. Army Research Institute of Enviornmental Medicine, Natick, MA.

    Email: [email protected]

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    Manipulation of exercise volume is known to acutely increase serum testosterone (T) for brief periods post-exercise. It is not known whether the acute resistance exerciseinduced changes in T are transient or if these changes alter the normal circadian rhythm for T. More rigorous blood sampling schemes may provide greater insight into the effects of exercise volume on subsequent T response patterns. PURPOSE: To examine the hypothesis that manipulating acute resistance exercise volume would alter 24h post-exercise serum T concentrations. METHODS: Eight healthy men (24 ± 5yr, 87 ± 9kg, 182 ± 6cm, 21 ± 5% body fat) completed three randomized sessions (separated by at least one month): control (C; no exercise), moderate volume resistance exercise (MVRE; 25 sets) and high volume resistance exercise (HVRE; 50 sets). Resistance exercise consisted of alternating back squat (1-RM, 117 ± 32kg), bench press (1-RM, 96 ± 16kg), leg press (1-RM, 201 ± 47kg) and lat pulldown (1-RM, 80 ± 63kg) separated by 90–120 sec rest between sets using five or ten repetitions maximum (relative intensity was matched across sessions). Serum was assayed for T every hour for 24h after each session. Energy requirements were calculated from resting metabolic rate, age and an activity factor. Diet was controlled by supplying subjects with meals the day of exercise and 24h post-exercise. Repeated measures analysis of variance was performed to detect statistically significant differences (P<=0.05). Tukey's post-hoc was performed to observe where significant differences occurred. All values are presented as mean ± SD. RESULTS: Total work for HVRE (2715 ± 445kJ) was significantly different from and approximately double that of MVRE (1337 ± 209kJ). Mean 24h T concentrations for HVRE (433 ± 33ng• dL-1) were significantly lower (~19%) than C (491 ± 31ng• dL-1) and MVRE (489 ± 30ng• dL-1). Significant time effects were also observed for serum T concentrations over 24 hours, indicative of the normal circadian rhythm for T (i.e. peak values, 534 ± 38ng• dL-1 were observed between 0200 to 0900h for all sessions). There were no significant interaction effects observed between exercise sessions and time. CONCLUSION: In contrast to previously reported data using short-term sampling, high volume (50 sets, ~2 hours), but not moderate volume (25 sets, ~1 hour) acute resistance exercise suppresses circulating T concentrations when sampled over 24h. The C and MVRE response for T was similar, indicating a lack of a dose-response relationship. These data suggest a threshold may exist for resistance exercise volume that inhibits T concentrations when exceeded.

    Accession Number: 00005768-200405001-01139

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    Copyright © 2000-2005 Ovid Technologies, Inc.

    Version: rel9.3.0, SourceID 1.10284.1.251

  2. Man kan altså sagtens få dårlig ånde, hvis man har en eller anden form for patologisk tilstand i fx. mavesækken, spiserøret eller mandlerne.

    Og man skal altså også lige huske, at videnskabelige artikler kan være en noget modificeret udgave af sandheden. Der findes forskellige former for bias (Skævheder/fejl i undersøgelsen, type1/2 fejl osv.), der skal tages hensyn til når de læses. Derefter kan man vurdere styrken af validiteten af undersøgelsen.

    Og så synes, jeg det er lidt sjovt, som empiri er blevet klassicificeret som ikke-brugbar viden herinde på forummet, og lige pludselig, er alle eksperter fordi de besidder praktisk erfaring. Vi kan vel vende den om, og antage at hende "eksperten" vel også har en masse praktisk erfaring med det hun laver. En eller anden form for succes med hendes råd, må hun sgu` da have, siden hun kan leve af skidtet - det er vel de færreste der kan prale af det herinde.

    I øvrigt, så gad jeg gad ikke se programmet færdigt, da der var Chapelles show på MTV :4thumbup:

  3. Noget som undre mig, er nemlig den tendens til at træne muskelgrupperne en gang pr. uge på t-nation. Det strider jo imod de "gængse" anbefalinger, nemlig at man skal træne hver muskelgruppe igennem 2 gange pr. uge. Det troede jeg egentlig var lidt 80`er agtigt. Her snakker jeg ikke om generel styrke eller styrke i de 3 store.

    Det kunne være spændende at høre folks egne erfaringer.

  4. Så har jeg læst din log igennem. Det er da godt nok nogle lange træningspas du har holdt dig. :poking::laugh:

    Nå, men nu har jeg så et forum hvor jeg kan holde øje med dig :tongue:

    Men tak for din rosende ord

    (og tak til ptpoul, men du ved jo at jeg slet ikke er så flink og kompetent, det er kun noget kunderne tror :devil: )

  5. Laseren er lidt mere bøvlet at forklare for den skaber ikke varme i vævet, men går ind i vævet og:

    Forøger cellerespirationen

    Forøger Cellestofskiftet

    Forøger celledelingen

    Normalisere Na / Ka pumpen

    Normalisere det elektriske membranpotentiale

    Forøger den lokale koncentration af lymfocytter, leukocytter og diverse andre makrofager, der indgår i det naturlige immunforsvar

    Forøger blodgennemstrømningen

    Forøger dannelsen af kollagent væv

    Forøger produktionen af ATP

    Laser er dog ikke vildt gennemprøvet endnu, men der dukker stadig flere og flere cases op som viser gode resultater med laser.

    Her i klinikken er de ihvertfald glade for den og bruger den en del 

    Ha ha, der er vist en der ved at skrive case-rapport om laserbehandling?!!! :4thumbup:

  6. Btw. Nikolaj T. Længe siden  Kan du gætte hvem jeg er?
    Nej, men jeg er meget nysgerrig! :hands:

    Og undskyld mit dumme indlæg, jeg kedede mig bare lidt! Undskyld Undskyld! :crybaby:

    Bænkpres er noget møg. Cabel crossovers til at brænde cuts ind og træne inderste bryst.

    Husk db flyes for at strække brystet bredere

    Det er altså helt nyskabende og unikke råd man får af de kiropraktorer! :4thumbup:

  7. Lidt mere.

    ABSTRACT

    The purpose of this study was to compare the effects of 5 weeks of physioball core stability and balance exercises with conventional floor exercises in women. The experimental group (n = 15) performed curl-ups and back extensions on the physioball while the control group (n = 15) performed the same exercises on the floor. Baseline and post-training tests included electromyography (EMG) recordings of the rectus abdominus and erector spinae muscles; abdominal, back, and knee strength measurements with the Cybex Norm System; and 2 unilateral stance balance tests. The physioball group was found to have significantly greater mean change in EMG flexion and extension activity (p = 0.04 and p = 0.01, respectively) and greater balance scores (p < 0.01) than the floor exercise group. No significant changes (p > 0.05) were observed for heart rate or Cybex strength measurements. Early adaptations in a short-term core exercise program using the physioball resulted in greater gains in torso balance and EMG neuronal activity in previously untrained women when compared to performing exercises on the floor.

  8. Til Jørgen og Poul, lidt ammo til jeres bæltediskussion :)

    ABSTRACT

    This study sought to analyze the effects of subjects' wearing weightlifting lumbar support belts on surface electromyographic recordings of the erector spinae muscle group while the subject executed parallel squats. Ten healthy college-age men with weightlifting experience participated in this study. Participants completed a total of 6 repetitions of high-bar parallel back-squats at loads equaling 60% of their 1 repetition maximum. Experimental conditions required subjects to perform 6 squats, 3 while wearing a belt and 3 without. Electromyographic electrodes recorded muscle activity at 800 Hz on both the right and left erector spinae at the lumbar (L3–L5) and thoracic (T5–T7) regions during all lifts. The results indicate that subjects' mean erector spinae activity was greater (p < 0.0125) in the lumbar region of the spine when wearing weight belts (±258 SD; 69.0 analog-to-digital units) during squatting exercises than the mean activity in subjects who were not wearing weight belts (±235 SD; 71.3 analog-to-digital units).

    Fra NCSA, J. Bauer