1. Francis P, Lyons M, Piasecki M, Mc Phee J, Hind K, Jakeman P. Measurement of muscle health in aging.
Biogerontology. 2017; 18: 901–911.
2. Koopman R, van Loon LJ. Aging, exercise, and muscle protein metabolism. J Appl Physiol (1985). 2009; 106(6):2040-8.
3. Volpi E, Nazemi R, Fujita S. Muscle tissue changes with aging. Curr Opin Clin Nutr Metab Care. 2004; 7(4):405-10.
4. Sung JH, Son SR, Baek SH, Kim BJ. The association of aerobic, resistance, and combined exercises with the handgrip
strength of middle-aged and elderly Korean adults: a nationwide cross-sectional study. BMC Geriatr.2022; 22, 676.
5. Otsuka Y, Yamada Y, Maeda A, Izumo T, Rogi T, Shibata H, Fukuda M, Arimitsu T, Miyamoto N, Hashimoto T. Effects
of resistance training intensity on muscle quantity/quality in middle-aged and older people: a randomized controlled trial.
J Cachexia Sarcopenia Muscle. 2022; 13(2):894-908.
6. American College of Sports Medicine. ACSM's guidelines for exercise testing and prescription. Philadelphia: Lippincott
Williams & Wilkins, 2021.
7. Wilson JM, Marin PJ, Rhea MR, Wilson SM, Loenneke JP, Anderson JC. Concurrent training: a meta-analysis
examining interference of aerobic and resistance exercises. J Strength Cond Res. 2012; 26(8):2293-307.
8. Zych M, Cannariato A, Bonato P, Severini G. Forward and backward walking share the same motor modules and
locomotor adaptation strategies. Heliyon. 2021; 7(8):e07864.
9. Adesolaa M, Azeezo M. Comparison of cardio pulmonary responses to forward and backward walking and running.
African J Biomed Res 2009; 2: 95 –100
10. Chaloupka EC, Kang J, Mastrangelo MA, Donnelly MS. Cardiorespiratory and metabolic responses during forward and
backward walking. J Orthop Sports Phys Ther. 1997;25(5):302-6
11. Hooper TL, Dunn DM, Props JE, Bruce BA, Sawyer SF, Daniel JA. The effects of graded forward and backward walking
on heart rate and oxygen consumption. J Orthop Sports Phys Ther. 2004; 34(2):65-71.
12. Flynn TW, Connery SM, Smutok MA, Zeballos RJ, Weisman IM. Comparison of cardiopulmonary responses to forward
and backward walking and running. Med Sci Sports Exerc. 1994; 26(1):89-94.
13. Kurz MJ, Wilson TW, Arpin DJ. Stride-time variability and sensorimotor cortical activation during walking.
Neuroimage. 2012; 16; 59(2):1602-7.
14. Lee M, Kim J, Son J, Kim Y. Kinematic and kinetic analysis during forward and backward walking. Gait Posture. 2013;
38(4):674-8.
15. Yang YR, Yen JG, Wang RY, Yen LL, Lieu FK. Gait outcomes after additional backward walking training in patients
with stroke: a randomized controlled trial. Clin Rehabil. 2005; 19(3):264-73.
16. Kim SG, Ryu YU, Je HD, Jeong JH, Kim HD. Backward walking treadmill therapy can improve walking ability in
children with spastic cerebral palsy: a pilot study. Int J Rehabil Res. 2013; 36(3):246-52.
17. Hösl M, Böhm H, Eck J, Döderlein L, Arampatzis A. Effects of backward-downhill treadmill training versus manual
static plantar flexor stretching on muscle-joint pathology and function in children with spastic Cerebral Palsy. Gait
Posture. 2018; 65:121-128.
18. Wang J, Xu J, An R. Effectiveness of backward walking training on balance performance: A systematic review and meta-
analysis. Gait Posture. 2019;68:466-475
19. Hao WY, Chen Y. Backward walking training improves balance in school-aged boys. BMC Sports Sci Med Rehabil.
2011; 3: 24
20. Fakharian Z, Ebrahimi E, Shaterzadeh MJ ,salavati M. Comparative study of forward walking and running with
backward walking and running on lower limbs function. Feyz. 2000; 4 (14):1-10. [In Persian]
21. Rikli RE, Jones CJ. Senior Fitness Test Manual. Human Kinetics, 2nd edition 2013
22. Gharemanlou E, Aghaalinejad H, Gharekhanlou R. The comparison of three type of strength training, endurance training
and concurrent training (strength combined with endurance) on bioenergetic properties, maximal strength and body
composition of untrained male. Olympi.c 2007, 40: 45-58. [In Persian]
23. Vosoughi Bane V, Moradi F, Aghaalinejad H, Piri M. Effect of four- and eight-week concurrent training on inflammatory
markers, muscular strength, and cardiorespiratory function in inactive adolescent girls. J Sport and Ex Physio.l 2014, 7
(2):1119-1138. [In Persian]
24. Nicklas BJ, Ambrosius W, Messier SP, Miller GD, Penninx BW, Loeser RF, Palla S, Bleecker E, Pahor M. Diet-induced
weight loss, exercise, and chronic inflammation in older, obese adults: a randomized controlled clinical trial. Am J Clin
Nutr. 2004;79(4):544-51.
25. Da Silva MAR, Baptista LC, Neves RS, De França E, Loureiro H, Lira FS, Caperuto EC, Veríssimo MT, Martins RA.
The Effects of Concurrent Training Combining Both Resistance Exercise and High-Intensity Interval Training or
Moderate-Intensity Continuous Training on Metabolic Syndrome. Front Physiol. 2020, 11; 11:572.
26. Timmons JF, Minnock D, Hone M, Cogan KE, Murphy JC, Egan B. Comparison of time-matched aerobic, resistance, or
concurrent exercise training in older adults. Scand J Med Sci Sports. 2018; 28(11):2272-2283.
27. Parastesh M. Effect of concurrent training (endurance resistance) on serum level of prostate specific antigen (psa),
cardiorespiratory endurance, muscular strength and body composition in men over 50. Daneshvar Medicine. 2019; 27
(143): 11-18. [In Persian]
28. Gorzi A, Rajabi H, Azad A, molanouri shamsi M, Hedayati M. Effect of Concurrent, Strength and Endurance Training on
Hormones, Lipids and Inflammatory Characteristics of Untrained Men. Iranian Journal of Endocrinology and
Metabolism. 2012; 13(6):614-620. [In Persian]
29. Robinson MM, Dasari S, Konopka AR, Johnson ML, Manjunatha S, Esponda RR, Carter RE, Lanza IR, Nair KS.
Enhanced Protein Translation Underlies Improved Metabolic and Physical Adaptations to Different Exercise Training
Modes in Young and Old Humans. Cell Metab. 2017; 25(3):581-592.
30. García-Pinillos F, Laredo-Aguilera JA, Muñoz-Jiménez M, Latorre-Román PA. Effects of 12-Week Concurrent High-
Intensity Interval Strength and Endurance Training Program on Physical Performance in Healthy Older People. J
Strength Cond Res. 2019; 33(5):1445-1452.
31. Lavin KM, Roberts BM, Fry CS, Moro T, Rasmussen BB, Bamman MM. The importance of resistance exercise training
to combat neuromuscular aging. Physiology (Bethesda). 2019; 34(2):112-122.
32. Yoo SZ, No MH, Heo JW, Park DH, Kang JH, Kim SH, Kwak HB. Role of exercise in age-related sarcopenia. J Exerc
Rehabil. 2018; 24; 14(4):551-558.
33. Peat G, McCarney R, Croft P. Knee pain and osteoarthritis in older adults: a review of community burden and current use
of primary health care. Ann Rheum Dis. 2001; 60:91-97.
34. Teck Ng C, Tan MP. Osteoarthritis and falls in the older person, Age Ageing. 2013; 42(5): 561–566.