To go a little deeper, we can look at powerlifting meet results to see how the gap between men and women shifts when comparing less competitive lifters to more competitive lifters.  As mentioned in a previous article, women lift about 67% as much as men in the squat, 56% in the bench, and 71% in the deadlift, on average (using allometric scaling to correct for differences in body mass).  However, those gaps are larger when looking at less successful lifters (those in the 10th percentile of relative strength) and smaller when looking at more successful lifters (those in the 90th percentile of relative strength).  A 5th percentile woman has about 62% as much relative strength as a 5th percentile man in the squat, 53% in the bench, and 67% in the deadlift. On the other hand, a 95th percentile woman has about 71% as much relative strength as a 95th percentile man in the squat, 60% in the bench, and 75% in the deadlift.  An analysis of weightlifting results in CrossFitters had similar findings (though they didn’t correct for differences in body mass):  larger sex gaps in snatch and clean & jerk performance in lower-level lifters and smaller gaps in higher-level lifters.
I just want to let you know that this article is absolute gold. You’re the real MVP for conducting a meta-analysis on this topic, especially when it’s so hard to find much research out there. More importantly, you’ve paved a way to explain more fully why strength training is so great for women to women and the benefits of it in comparison to men. Research is not only assuring and affirming, but it’s convincing for people who dabble with the idea of something, so thank you! Anyways, very well done and please keep doing what you’re doing!
I have been lifting for Over 10 years, and started out with The new rules of lifting. I loved all of the books that followed, female body breakthrough etc. I wanted to change things up, and found this workout. I am really enjoying it. With the other programs, you only workout 3 days, and it’s a whole body workout, no targeting specific parts I guess lol. So I was not used to working out this way, but as I said, I really like it. I wanted to make sure I am doing it right though. I am doing each exercise , 3 or 4’sets and then moving on to the next? I am used to doing supersets, I hope that makes sense :)
During weeks 5-8, you will be lifting in the 6-8 rep range. What this means is that you want to complete at least 6 reps but no more than 8 reps for each set. If you cannot complete 6 reps, then the weight is too heavy and you should decrease the load. If you can complete more than 8 reps, then the weight is too light and you should increase the load.
HIIT cardio is the most effective for fat-burning, and it's actually really easy to do. Choose a cardio machine, a piece of equipment like a Kettlebell, or just use your bodyweight. The point is to do intervals of movement as intensely as you can. At first, go for something like 30 seconds of work followed by one minute of rest. Do these intervals for 20 minutes. As you get better, you can increase the work time and decrease the rest time.
Different exercises will require different weights, but there are some markers that can help guide you towards the right resistance, whether you're using dumbbells, kettlebells, or a barbell. Go for a weight that feel heavy enough to challenge you, but not so heavy that you sacrifice your form. For example, if you're doing 15 reps, you should feel pretty fatigued by the time you hit rep 15. If you can breeze through all your reps, though, that's a sign you should up the weight.
I appreciate such a thorough synthesis on this topic. As a systematic reviewer, my main concern would be a lack of systematic assessment of risk of bias in the individual studies. I see you did a funnel plot to see any bias by study size, but there are so many other things involved in study quality (study design, selection of participants, statistical adjustment for potential con founders, etc). I would be interested to see how many of these studies were fair or better quality (there are several well accepted quality rating tools available for various study designs). I would also be interested to see a sensitivity analysis to see if the pooled results differ when high risk of bias studies are eliminated, for example. Thanks for an interesting read.
Now, I’m a student at Berkeley, so I can only fit three or four workouts into my schedule. But if you do it right, four days is enough. I do two upper-body sessions, one focused on shoulders and chest, the other on back, biceps, and triceps. The two lower-body sessions are both focused on legs and glutes. And overall, I mainly focus on compound lifts, like deadlifts, squats, hip thrusters, bench press, and military press.
There are some things on here that you can do from home if you own the equipment, such as I do, but there are some things you cannot do without going to a gym… because who really owns a Leg press in their home? That is why there are alternatives to almost ANY exercises such as using resistance bands instead of cables for the cable curls, etc. Tweak the program to best suit your needs!
I’d be doing you a disservice if I didn’t mention my own workouts that are available here at Make Your Body Work. Every single workout will challenge your entire body and will include elements of cardio, strength, and core conditioning. The uniqueness of these workouts are the “difficulty levels” that provide up to 4 distinct options for every single move. This makes each workout very accessible for newbies, yet challenging for super-fit users.
When you finally muster the courage to try some resistance training, you'll likely head over to the machines. You'll choose an open one, read the directions, and then try to copy whatever the model is doing in the pictures. "WTF am I doing?" you may ask yourself as you go through the motions. "Is this even right? I swear those directions don't make any sense. Good God, I hope no one is watching me!"
Take this a couple of times during the rest periods of your workout to monitor your heart rate. If you don’t have a stopwatch handy, think of this as a perceived effort of 6 to 7, on that 1-10 effort scale described above.  You should be breathing heavily, find some difficulty in holding a conversation (speaking just a few words or a sentence at a time), and on the verge of becoming uncomfortable.  

Unfortunately, for all of us late to the gym game (those that didn’t quite follow through on those New Year’s Resolutions but have big plans to crush them next year), that coveted summer body might not be a reality just yet. So what do you do? Do you get a gym membership and promise that you’ll go every morning right before overspending on a picture-worthy acai bowl?

While all cells contain some fat, it is mainly stored in muscle (intramuscular triglycerides) and in adipose tissue (body fat). Adipose tissue is the body’s main fat storage site and the fat we all want to lose. Adipose tissue is divided into individual cells called adipocytes. These adipocytes hold stored triglyceride (1 glycerol molecule bonded to 3 fatty acids) droplets, which serve as a source of energy for the body. These droplets make up 95% of adipocytes’ volume. In order for this storage of potential energy (60,000-100,000 kcal) to be used and to LOSE BODYFAT (everyone’s goal), it must be mobilized through lipolysis (the breakdown of triglycerides).
"Start with two days for two to three weeks, then add a third day," says Davis*.*"Ideally, you should strength train three to five days per week, but work your way up—starting off at five days a week might shock your body." Here's a comprehensive three-day-per-week plan to get you started. Aim to complete 20-minute sessions, then gradually add on time in ten-minute increments until you're working for 45 to 60 minutes, suggests Davis.
Complete the exercises in each workout as Straight Sets. For example, you'll do one set of leg presses, rest for 30 seconds, do a second set, rest, do the third set. Then, move on to the next exercise. You'll complete all movements in both workouts this way. Complete 12 reps of all movements for 3 sets each, and rest for 30 seconds in between each set. Choose a weight load where the last two reps of every set are extra hard, where you wouldn't be able to do a 13th rep. You may find that you increase the weight load for each set while keeping the 12 reps for all three sets.