Näyttää heikentävän suorituskykyä:
"One of
the first studies to evaluate the effects of marijuana
smoking on exercise performance was performed by
Steadward and Singh [154], who tested the effects of
marijuana smoking compared to placebo on several indi-
ces of exercise performance. Resting heart rate and both
systolic and diastolic blood pressure were significantly
elevated at rest after marijuana consumption compared
to both control and placebo. Although there was no sig-
nificant decrease in grip strength, physical work capacity
at a heart rate of 170 decreased by 25% compared to pla-
cebo. Renaud and Cormier [155] tested subjects 10 min
after smoking a marijuana cigarette (containing 1.7% of
Δ
9
-THC) of 7 mg/kg of body weight, and noted a slight,
but significant decrease in cycle ergometry time to ex-
haustion. Avakian et al. [156] demonstrated that double-
blind administration of marijuana as 7.5 mg of
Δ
9
-THC
or placebo did not affect blood pressure, ventilation or
oxygen uptake during submaximal exercise (15 min at
50% of Vo
2max
), however did increase heart rate and the
rate-pressure product at rest and during both exercise
and recovery. Tashkin et al. [157] hypothesized that the
decrease in exercise performance may be due to its
chronotropic effect leading to achievement of maximum
heart rate at reduced workloads. Furthermore, detrimen-
tal effects on other aspects of performance have also
been demonstrated. When subjects were acutely given
THC orally (215 μg/kg) acutely, significant deficits in gen-
eral performance, standing steadiness, reaction time and
psychomotor performance were observed over a 5 hour
period post-ingestion [158]."
"One of
the first studies to evaluate the effects of marijuana
smoking on exercise performance was performed by
Steadward and Singh [154], who tested the effects of
marijuana smoking compared to placebo on several indi-
ces of exercise performance. Resting heart rate and both
systolic and diastolic blood pressure were significantly
elevated at rest after marijuana consumption compared
to both control and placebo. Although there was no sig-
nificant decrease in grip strength, physical work capacity
at a heart rate of 170 decreased by 25% compared to pla-
cebo. Renaud and Cormier [155] tested subjects 10 min
after smoking a marijuana cigarette (containing 1.7% of
Δ
9
-THC) of 7 mg/kg of body weight, and noted a slight,
but significant decrease in cycle ergometry time to ex-
haustion. Avakian et al. [156] demonstrated that double-
blind administration of marijuana as 7.5 mg of
Δ
9
-THC
or placebo did not affect blood pressure, ventilation or
oxygen uptake during submaximal exercise (15 min at
50% of Vo
2max
), however did increase heart rate and the
rate-pressure product at rest and during both exercise
and recovery. Tashkin et al. [157] hypothesized that the
decrease in exercise performance may be due to its
chronotropic effect leading to achievement of maximum
heart rate at reduced workloads. Furthermore, detrimen-
tal effects on other aspects of performance have also
been demonstrated. When subjects were acutely given
THC orally (215 μg/kg) acutely, significant deficits in gen-
eral performance, standing steadiness, reaction time and
psychomotor performance were observed over a 5 hour
period post-ingestion [158]."
Vastaukset 1
Vanhimmat
Joo täyskielto päälle ja vankilaan kaikki s a a t a n a n narkkarit . Poliisin kannattaa ottaa kiinni kaikki apinat jotka pössöttelevät jotai ihme hassista. pössöttely on huumetta ja huume on laitonta. ryssä on ryssä ja mailmammesttarit hei maailmamestarit ehi