Re: Calculating a 1RM???

In article <MPG.1d7e7c81392f2a3b98990f@xxxxxxxxxxxxxxxxxxxxxx>,
John Black <jblack@xxxxxxxxx> wrote:

> In article <e_mdneUuZNZLHIneRVn-2g@xxxxxxx>, bobnsg63@xxxxxxxxx says...
> >
> > "OmManiPadmeOmelet" <Omelet@xxxxxxxxxxxxx> wrote in message
> > news:Omelet-98A16C.10445930082005@xxxxxxxxxxxxxxxxxxxxx
> > > If I can lift X amount of weight (use DL as an example) for 5 reps with
> > > good form, what should I attempt as a 1RM?
> >
> > http://www.exrx.net/Calculators/OneRepMax.html
>
> Hmm, I'm not sure what they base this site on but it doesn't appear to
> be totally accurate for me. I can DB Bench press 80 lb dumbbells 6
> times. I put that into the site and it said my 1RM is 93 lbs. I can
> (sometimes) do 85 lbs dumbells a couple/few times but I cannot come
> close to pressing 90 pounders. Also, I can do 70 pounders 10 to 12
> times. I put in 70/10 and it also came up with 93 lbs as my 1RM.

It's only averages. Your real 1RM changes all the time. I've had a
powerlifting competition where I only made my opener in a lift like the
squat - which is a weight I could normally do three reps with. I've had
other competitions where I added weight to my lifts because the opener
felt so easy.

There is no way a formula could figure out one persons 1RM, let alone
everyones. Competitive powerlifters and weightlifters tend to have more
fast twitch muscle and highly optimized motor patterns for their lifts -
there is no way I could do 5 reps with my 1RM weight, for example. OTOH,
a bodybuilder would have no problem doing 5 reps and might even get 8.

The easiest way to determine your 1RM is to do it. But that will only
give you your 1RM for that particular instance. OTOH - what difference
does it make? You have to train within a certain intensity zone to get
adaptation.

--
Keith
.

Relevant Pages

  • Re: Calculating a 1RM???
    ... > powerlifting competition where I only made my opener in a lift like the ... > squat - which is a weight I could normally do three reps with. ... > fast twitch muscle and highly optimized motor patterns for their lifts - ... > there is no way I could do 5 reps with my 1RM weight, ...
    (misc.fitness.weights)
  • Re: Calculating a 1RM???
    ... > powerlifting competition where I only made my opener in a lift like the ... > squat - which is a weight I could normally do three reps with. ... > fast twitch muscle and highly optimized motor patterns for their lifts - ... > there is no way I could do 5 reps with my 1RM weight, ...
    (misc.fitness.weights)
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