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Understanding ‘Cardio’

‘Cardio’ is a term you will hear a lot in the gym. Usually in a negative way, with thoughts of, mundane, prolonged incline walking on a treadmill springing to mind. However, ‘cardio’ encompasses much more than long slow distance training. This article will delve into the many different types of ‘cardio’ and how you can use it to help reach your training goals.

 

Firstly, ‘cardio’ is short for cardiovascular exercise and can be defined as any exercise that increases heart rate and keeps it up. However, heart rate can be raised in so many different ways, all of which bring about a different adaptation. Therefore, it’s important to have your goals clearly defined because a training session to develop aerobic capacity will look very different from sessions used to build speed, speed endurance or lactate threshold. If you aren’t an athlete, it is likely you will be wanting to use CV exercise to improve your overall health or to lose weight. In which case, you will want to familiarise yourself with all types and use some of each in your training throughout the year.

 

When it comes to cardiovascular exercise, our body uses three energy systems. These are called the alactic system, lactic system and aerobic system. There is almost never a time at which all three systems aren’t working simultaneously. However, for most forms of exercise, one energy system will be being used a lot more than the other two.

 

 

If you want to develop speed, then you want your training to be focused on building the alactic system. The alactic system is used for high intensity exercise for up to approximately 13 seconds. It does not use oxygen and instead forms energy from recycling ATP using phosphocreatine stores in the muscle. These stores are very small however, hence why we can only utilise this system for 13 seconds before a prolonged rest (>3 minutes) so that the body can restore phosphocreatine levels. With that in mind, we can apply this to a training sessions to help develop this system. An example being 8 sets of 10 second sprints with 3 minutes rest. Many people don’t feel like they’re ‘working hard enough’ when doing this sort of training as they aren’t out of breath. However, looking back at what this system uses, it does not use oxygen, therefore when we train this system correctly, we do not create an oxygen debt and therefore do not feel out of breath. We can apply specificity to make this session more applicable to the goal. In very simple terms, runners will do this session on a track, cyclists on a bike and rowers on a row-erg or boat and so on.

 

The next system we can develop is the lactic acid energy system. The popular ‘HIT’ training falls into this category. This energy system derives energy from glucose. However, the oxygen debt from high intensity exercise results in lactic acid being produced, causing pain and this is why this energy can only be the predominant energy system for up to 3 minutes. When training, work intervals will be between 30 seconds and 3 minutes with rest intervals no longer than the work interval. This is so that the lactic acid cannot fully clear prior to the next interval, resulting in a gradually increasing tolerance to lactic acid. This is useful training for events which use this energy system such as 800m running. Sessions for this energy system can look very different. For example, 3 sets of 30 second sprints with 15 seconds rest. As well as, 6 sets of 3 minutes working hard with 3 minutes rest. Despite targeting the same energy system, the latter session is more aerobic, so it’s important to know what event you are targeting and tailoring your sessions towards that goal.

 

The final energy system is the aerobic energy system. This utilises oxygen and is best developed at around 70% of your maximum heart rate. An example for a 40-year-old would be (220-age) = Max Heart rate estimation. (220-40) = 180. 70% of 180= 126bpm. This will be the predominant energy system for any exercise lasting over 3 minutes. Therefore, this is going to be the predominant energy system for events such as 5km run or above.

It is worth noting, that if you are using cardiovascular exercise for general health then it is most productive to add a bit of each type of energy system training throughout the year. However, adherence is key, therefore it’s important to prioritise the type that you enjoy most and fits into your lifestyle.

Personal Training Tips | Resistance Training Benefits for Females

What is Resistance Training?

Resistance Training can be defined as a form of exercise, whereby external weights provide progressive overload to skeletal muscles in order to make them stronger and often result in hypertrophy (growth in overall size of muscle cells) (Alix-Fages et. al, 2022; Phillips and Winett, 2010), which can lead to several benefits.

Mental Health:

Firstly, Ramirez and Kravitz (2012) looked into the benefits of regular resistance training and found that it has been shown to improve numerous aspects of mental health including: lessened anxiety, depression, chronic fatigue, self-esteem, memory and cognition. The way in which resistance training helps achieve this is not yet clear, but the benefits to mental health could well be consequences of the physical benefits that resistance training provides. For example, when we start training regularly, our sleep may improve. In turn, we see a reduction in stress hormones (Maggio et. al, 2013), which then can have a positive effect on our level of anxiety.

Fat Loss:

When wanting to lose weight, we need to be in a calorie deficit. When in this calorie deficit, weight can be lost via losing body fat, water, and muscle tissue. Regular resistance training helps preserve muscle mass when in a calorie deficit (Miller et. al, 2018). This, in turn, results in more of the weight lost being from body fat tissue, as opposed to muscle tissue. It is important to note that protein intake and sleep must also be sufficient to maximise muscle preservation, and therefore fat loss, in a calorie deficit. (Nedeltcheva et. al, 2010; Stokes et. al, 2018)

Frailty and Functionality:

As we age past the age of 35, we experience a gradual loss of muscle mass of around 1-2% per year, this is known as sarcopenia (Cruz-Jentoft and Sayer, 2019). Once we reach our 60’s and older, sarcopenia may contribute to a loss of functionality in daily tasks such as climbing stairs with ease, or playing with grandchildren.

Resistance training in elderly populations has been shown to increase their ability to go from sitting to standing with less postural sway and more proprioception, which is linked to more functional ability and lower risk of falls. (Faigenbaum and Myer, 2010)

‘I Don’t Want to Look Bulky’:

This is a common worry with female clients. Fortunately, there is about as much chance as accidentally adding significant amounts of muscle mass accidentally as there is as taking driving lessons and accidentally ending up in the Monaco Grand Prix.

Putting on significant amounts of muscle mass requires consistent training on a hypertrophy focussed plan, being in a calorie surplus, and consumption of adequate protein for a number of months before noticeable increases are seen. Overall, resistance training can be used as an excellent tool to improve one’s quality of life, regardless of age or goals.

Reference List:

  • Alix-Fages, C., Del Vecchio, A., Baz-Valle, E., Santos-Concejero, J., & Balsalobre-Fernández, C. (2022). The role of the neural stimulus in regulating skeletal muscle hypertrophy. European Journal of Applied Physiology, 1-18.
  • Cruz-Jentoft, A. J., & Sayer, A. A. (2019). Sarcopenia. The Lancet393(10191), 2636-2646.
  • Faigenbaum, A. D., & Myer, G. D. (2010). Pediatric resistance training: benefits, concerns, and program design considerations. Current sports medicine reports9(3), 161-168.
  • Maggio, M., Colizzi, E., Fisichella, A., Valenti, G., Ceresini, G., Dall’Aglio, E., … & Ceda, G. P. (2013). Stress hormones, sleep deprivation and cognition in older adults. Maturitas76(1), 22-44.
  • Miller, T., Mull, S., Aragon, A. A., Krieger, J., & Schoenfeld, B. J. (2018). Resistance training combined with diet decreases body fat while preserving lean mass independent of resting metabolic rate: a randomized trial. International journal of sport nutrition and exercise metabolism28(1), 46-54.
  • Nedeltcheva, A. V., Kilkus, J. M., Imperial, J., Schoeller, D. A., & Penev, P. D. (2010). Insufficient sleep undermines dietary efforts to reduce adiposity. Annals of internal medicine153(7), 435–441. https://doi.org/10.7326/0003-4819-153-7-201010050-00006
  • Phillips, S. M., & Winett, R. A. (2010). Uncomplicated resistance training and health-related outcomes: evidence for a public health mandate. Current sports medicine reports9(4), 208.
  • Ramirez, A., & Kravitz, L. (2012). Resistance training improves mental health. IDEA Fitness Journal9(1), 20-22.
  • Stokes, T., Hector, A. J., Morton, R. W., McGlory, C., & Phillips, S. M. (2018). Recent perspectives regarding the role of dietary protein for the promotion of muscle hypertrophy with resistance exercise training. Nutrients10(2), 180.

 

 

3 Personal Training Exercises for a Beginner for Building Glutes

As personal trainers we have found that the glutes are for most individuals the biggest muscle in the body, and for most females an area on their body that they have a preference to develop. That said form a performance point of view you want the biggest muscle in your body to be strong and functionally sound.
Many studies have shown the effects of the back squat at simulating hypertrophy at the glutes. The skill set required to perform a squat to the degree necessary to drive output and range of motion to get the glutes into a lengthened to the point of creating sufficient mechanical tension can only really be reached by individuals who have developed the skill of squatting. As you are reading this article, I would presume you are a novice lifter who would benefit from 3 efficient exercises that require an entry level skill set to stimulate your glutes.
I mentioned how great back squats are at building glutes however don’t think it gives you the licence to jump on the rack and start squatting you really have to earn the skill level to squat correctly and have the ability to stay stable enough so that you can use your glutes to squat. The problem most individuals walk into when squatting is going to an anterior pelvic tilt within their squat, this will disadvantage the ability for your glutes to create hip extension and the hamstrings and the adductor magnus will come into play. When you perform a squat and your knees cave in you are likely going to be an individual who will not grow your glutes via squatting in your program, your glutes will not be contributing to the lift for long enough to create a stimuli for them to create the adaptation for them to grow. This does not throw the back squat in the bin for you I just will require some dedicated time practising the skill of the squat and working on your stability around the hips and pelvis.
1) Leg Press – The leg press enables a relatively novice lifter to work the glutes in their lengthened position without requiring the same level of ability as a back squat would. With the external stability of the machine it gives the individual the opportunity to drive enough stimulus through the glutes to drive the growth through the glutes. Studies have also show that we generally see greater responses in muscle hypertrophy in exercises that challenge a muscle within its lengthened position this is more than likely due as it is where we see mechanical tension at its highest. To get the most out of the leg press a tempo to perform the exercise in would be: 2e:2-2c:0 (2e= 2 seconds eccentric:2 seconds hold at the bottom of the eccentric:2c=2 seconds concentric:0 seconds at the top of the concentric).

2) 45 degree back extension (glute dominant) – When done correctly this exercise effectively work the glutes within their shortened position. The key is limiting the range of motion so that you can remain in a posterior tilt of the pelvis throughout driving the hips into the pad as hard as you can squeezing the glute fibres together and contracting the glutes as hard as you can. This can be done with your bodyweight and still be incredibly challenging when the intent of maintaining the pelvis in that stable posterior tilt and contracting the glute fibres as hard as you can all the way throughout the movement. Some may argue that you are not working the full range of motion of the exercise however this article is for people who are looking to grow glutes and challenge the glutes with enough stimulus to elicit a hypertrophy adaptation, not a mindless pursuit of movement with no true stimulation. The great thing about this exercise is that it requires minimal set up time and you can really push the glutes to failure to stimulate enough metabolic stress and drive your glutes to grow. Comparing this exercise with the barbell hip thrust, which also works the glutes in its shortened position would be the inefficiency of time to set up the hip thrust. 3 mins to set up and 3 mins to clear your equipment away in that time you would have finished your sets on the 45 degree back extension, and more than likely pushed your glutes further into a state of fatigue and moved on to your next exercise hence why I would tend to go for the efficiency of the 45 degree back extension over the barbell hip thrust. Tempo considerations: 2c:2-1e:0

3) Trap Bar Deadlift – The trap bar deadlift would be my hip hinging movement of choice for a novice lifter, the technical requirements are so much less than a conventional deadlift or an RDL. The trap bar deadlift will also exert less force through the lumbar spine than a conventional deadlift but you still get a lot of glute stimulation. If you are a novice lifter who does not have the skill proficiency to squat and your goal is to have a good squat, its more than likely that you will need to work develop the skill requirements for a conventional deadlift also. The position you get into with the trap bar is a lot more upright than a conventional deadlift and may have some carry over to the progression of the barbell back squat as well as the conventional deadlift. It can teach you to keep your pelvis stable and how to brace from hip flexion to hip extension, as you are starting from a concentric phase where people usually break down within a squat which begins in the eccentric. Tempo considerations 1c:2-2e:2

In addition to these 3 movements I would add some unilateral lower body movements to your program on a consistent basis:

– Single leg RDLs
– Split Squat variations
– Lunge variations
– Hip airplane

If the goal is to grow your glutes the journey does not end with these 3 exercises however myself and many other experienced lifters use these movements as a staple in their training programs. Progressing your lifts to more advanced lifts once you have developed the skill prerequisites to perform them rather than fast tracking to exercises that may be more counterproductive for you due to your level of proficiency, this is probably the number one mistakes I see novice lifters make.